NOTES TAKEN ON AN EXCURSION TO MERRIBROOKE, THE COUNTRY PLACE OF DR. ROBERT T. MORRIS, AT STAMFORD, CONN., SEPTEMBER 5, 1917.
Dr. Morris Conducting the Party.
(1) Taylor shagbark hickory tree, overhanging the entrance-gate. A tree remarkable for annual bearing and for nuts of high quality, thin shell, large size, and excellent cleavage. Among hundreds of hickories examined, many of them in response to prize offers, this tree at the entrance furnishes one of the very best nuts of the lot.
(2) Buckley hickory (Hicoria Buckleyi) from Texas. Supposed not to be hardy in this latitude. Perfectly hardy, but not growing as rapidly as it does at home. Very large roundish thick shelled nut with a kernel of good quality if you can get it. Kernel has a peculiar but agreeable fragrance.
(3) Another southern species, the North Carolina hickory (Hicoria Carolinae-septentrionalis). Note the small, pointed, dark colored buds and beautiful foliage. The tree is perfectly hardy in Connecticut. This shagbark bears a small thin shelled nut of high-quality and it will be particularly desirable for table purposes. The tree grows thriftly in Connecticut.
(4) Carolina hickory. Grafted on native shagbark.
(5) A group of Korean nut pines (Pinus Koraensis). Raised from seed and now six years of age. One of the valuable food supply pines of northern Asia. Like most eastern Asiatic trees the species does well in eastern North America.
(6) A central Asian prune (Prunus Armeniaca). Without value for the fleshy part of the drupe, but with a nut like that of the apricot, highly prized for its kernel. The tree is hardy and thrifty, but rather vulnerable to a variety of blights belonging to Prunus.
(7) An ordinary black walnut grafted to the Lutz variety. A very large nut with good cleavage, good color and good quality.
(8) Alder-leaved chestnut (Castanea alnifolia) from central Georgia. One of the most beautiful of the American chestnuts, with more or less of the trailing habit, running over the ground like the juniper, and apparently not subject to blight. In Georgia it is an evergreen, but in Connecticut it is deciduous, although sometimes a few green leaves are found in the early spring if they have been covered by snow or by loose dead leaves during the winter. The nut is of high quality and fair size. There are a number of hybrids between this and other chestnuts at Merribrooke, but not bearing as yet.
(9) A group of common papaws (Asimina triloba), two of them grafted. The Journal of Heredity offered a prize of fifty dollars for the best American papaw, and the prize was awarded to the Ketter variety, the fruits of which weigh about one pound each. Seven little trees of this species were secured and two larger papaw trees grafted from cuttings when the seven were set out. Papaws grow well in this part of Connecticut, and because of the high quality of the fruit should be more largely planted.
(10) Mills persimmon. One of a group of several varieties that are being cultivated in this country. Hardy and thrifty in Connecticut.
(11) A group of Jeffrey bull pines (Pinus Jeffreyi) from Colorado. One of the nut pines. Supposed to do its best in the arid mountains of the West. Perfectly hardy and thrifty with beautiful bluish-green foliage in Connecticut.
(12) Himalayan white pine (Pinus excelsa). One of the nut pines and with remarkably handsome foliage.
(13) A group of Chinese pistache nut trees (Pistacia sinensis). At Merribrooke it has the habit of frequently growing twice in one year and sometimes three times in one year. The shoots will grow a foot or more and then make resting buts early in July. After about ten days of resting the buds burst, new shoots grow again and rest for the second time in the early part of September. If we have a warm moist fall the buds burst for the third time and make a third growth. This third growth winter-kills without injury to the tree, however. The significance of the growth presumably relates to the tree being an inhabitant of an arid country, where it has adapted itself to the rainfall of that country. I do not know if the trunk adds a new ring of wood after each resting period, but it likely enough does so.
(14) Moneymaker pecan. Perfectly hardy and thrifty. It has not borne as yet and there may be a question of the season being long enough for ripening the nut. At the left a Stuart pecan, that comes from the very borders of the Gulf of Mexico. Sometimes the smaller branches winter-kill badly and at other times they do not. It is remarkable that a tree from the shores of the Gulf of Mexico should live here at all in the winter.
(15) A field of six-year-old trees. Most of them the result of placing bitternut hickory pollen on staminate butternut flowers. The trees have not borne as yet and we can not tell if they are true hybrids or parthenogens. Parthenogenesis occurs readily with many nut trees. Pollen of an allied species which does not fuse with the female cell to make a gamete may, nevertheless, excite a female cell into division and the development of a tree. Such a tree would be expected to show intensified characteristics belonging to the parent. This lot of trees notable for the fact that some are very small for their age and some very large.
(16) A group of Japanese chestnuts. They blight and die and blight and live and are not given much attention as they are of little value anyway. The chestnut blight (Endothia parasitica) attacks the Japanese chestnut about as freely as it does the American chestnut. The trees do not die from it quite so quickly and may bear for some years before dying.
(17) A group of Japanese persimmons in a protected corner of a west-facing side hill. Most of the Japanese persimmons are not hardy in Connecticut, but an occasional variety given a moderate degree of protection will manage to live pretty well. They are uncertain trees, however, as two of the trees grafted to Bennett Japaneses persimmons from Newark, N. J., had two-year-old shoots winter-killed this year. These were on low ground. I shall put my other Bennetts on hill sides.
(18) American sweet chestnut grafted upon Japanese stock. Ordinarily Asiatic and American chestnuts do not make very satisfactory exchange stocks. In this case the American chestnut happens to be doing very well. The variety is known as the Merribrooke. Among the many thousands of chestnut trees here when I bought the place this one bore the best nut of all, very large and of high quality, and beautifully striped with alternate longitudinal stripes of dark and light chestnut color. The parent tree was one of the very first to go down with the blight ten years ago, and the standing dead trunk was removed at the time when I cut out five thousand dead or dying chestnut trees. Stump sprouts of the Merribrooke variety survived for grafting purposes, and I have now kept the variety going by patient grafting ever since, on new stocks, hoping to carry the variety along until this epidemic of blight runs out of its protoplasmic energy.
(19) Ordinary Japanese chestnut. With fairly good crop of large nuts, but not of good quality, except for cooking purposes.
(20) A group of hybrids resulting from placing the pollen of the Siebold Japanese walnut upon the pistillate flowers of our butternut. The young trees have not borne as yet.
(21) Hybrids between the common American hazel and the European purple hazel. There are a number of these hybrids, and none of them with nuts better than those of either parent, consequently I give them little attention. Some of the hybrids, not as yet bearing, may prove to be more valuable. We have to make lots of hybrids in order to get a small percentage of important ones. In this particular lot the hybrid has taken on a habit of the mother parent, the common American hazel, growing long stoloniferous roots, an undesirable feature.
(22) The Golden Gem persimmon, laden with fruit. Grafted upon the stock of a staminate common persimmon.
(23) Early Golden persimmon. Bearing heavily, a variety grafted upon common persimmon stock.
(24) A group of Chinese chestnut trees (Castanea mollissima). Very beautiful trees, worthy of a position on almost any lawn, the foliage is bright and shining, and the thrifty growth very attractive. The species is practically immune to blight, sometimes at a point of injury bark blight will appear, but it spreads very slowly, is easily cut out and does not reappear at that point. It will be a success in Connecticut. The nut is not quite up to our native chestnut in quality, but it is larger in size and a first rate nut on the whole. The tree comes from the original home of the blight, and the two plants having lived together for ages the law of survival of the fittest has given us this chestnut tree, which can largely take the place of our lost American chestnut. The tree does not grow to be quite so large as our chestnut, but I am making hybrids between this species and three species of American chestnuts, and may find some remarkable ones eventually.
(25) Two young nut pines with lost labels. I shall probably not be able to determine the species until they bear cones.
(26) A number of black walnut trees grafted with several varieties of English walnut (Juglans regia). There is particular advantage in grafting English walnut upon black walnut stock for the reason that mice are extremely destructive to English walnut roots in winter time. Furthermore black walnuts will grow in soil that is distinctly acid in reaction, while the English walnut demands a neutral or alkaline soil. The nearest tree of this group had new shoots of the Rush English walnut nearly six feet long, which blew off last week in a wind storm because they had not been braced sufficiently. It is very important when grafting nut trees to fasten strong bracing sticks alongside of vigorous shoots and tying them with sisal tarred cord, which holds good for two years.
(27) Appomattox pecan, Busseron pecan, and Major pecan. All three trees growing very thriftily and all set nuts this spring, but did not hold them. This is the habit of young hickories and walnuts rather largely. None of my pecan trees are old enough as yet to fruit well. I do not know what varieties will find our season long enough for ripening purposes. That particular feature of pecan raising is quite as important as the mere question of hardiness in Connecticut.
(28) A little old butternut tree by my garden. This has been the mother of practically all my hybrids between butternuts and other species of walnuts. This little old tree bears flowers every year and is very conveniently situated for hybridizing work.
(29) An English walnut tree near the garden gate is growing thriftily, making sometimes four feet in a year, but as a seedling has not borne as yet.
(30) Pecan seedling with buds of Busseron recently inserted. They are fastened in place with waxed muslin and then painted with ordinary white paint. I use that a great deal in place of grafting wax, but make the paint thick and heavy so that little free oil runs in between the cambium layers when grafting or budding. Paint seems to be harder and better than liquid grafting wax if it has no free oil.
(31) A rapidly growing Chinese walnut (Juglans sinensis). Very much like Juglans regia. The nuts have prominent sutures and the kernel is rather more oily than that of the English walnut, but of very good quality, nevertheless.
(32) A number of hickory trees of different species grafted by my favorite method, unless we call it "budding." I call it "the slice graft," and have not known any one else to try it. A slice of bark from one inch to four inches in length is removed from the stock and this area is fitted with a slice of about the same length and breadth, carrying a bud or spur cut from the guest variety. On one of these young hickories you observe I made three slice grafts and all of them have taken with a very thrifty growth of the Taylor variety. One point of importance, I believe, is to have the slice from the guest variety a trifle smaller than the slice from the host stock. The guest slice is bound firmly to the host with waxed muslin.
(33) Paragon chestnut heavily loaded with burs. This particular tree is said to belong to a variety that is much advertised, but there is some question if it is a peculiar variety of the Paragon, because Mr. Engel, of Pennsylvania, is said to have furnished his own Paragon chestnut scions when the other people were short of stock. If the nursery firm that has put out this Paragon chestnut on the market with so much vigor and at such expense had been a little more frank everybody would have profited. They have made a point of advertising the Paragon chestnut as blight resistant, which it is not; consequently, the country is full of disappointed customers. The dealers should have said something more or less as follows: "This chestnut blights freely, but it bears so well and so abundantly and with such a good nut that people can afford to plant it in large acreage and let it blight, carrying it along with about the degree of attention that one would naturally give to good apple trees." Had the dealers only said something like that, the members of our Association who receive very many letters from all over the country asking about this particular chestnut would have advised its purchase in large quantities. Prospective customers are shy of nurserymen in general. They write to members of our Association asking who is reliable. People have learned what we stand for.
(34) A hybrid between a pecan and a bitternut hickory. A large handsome thin shelled nut, but bitter. The great vigor of growth of the seedlings of this hybrid, which comes from Mr. G. M. Brown, of Van Buren, Ark., would seem to make this hybrid variety of remarkable value as grafting stock for other hickories. The nuts are exceptional in carrying the type form of progeny.
(35) Two rows of many species of nut trees planted in thick glazed earthenware pots. The pots are about four feet in depth and with round perforations. I had these made to order. I sunk them in the ground to the level of the rim and then planted these trees in the pots under the impression that they would remain dwarfed on account of the confinement of the roots, and that I would have a conveniently placed series for experiments in hybridization. The experiment was not a success. I knew that growing trees would move rocks, but had no idea that roots protruding through these holes in heavy glazed earthenware would be able to break the pots. The roots have done just that, and whenever a tree in a pot becomes large enough the protruding roots break the pot to pieces, and the tree marches straight along to its original destiny.
(36) One of a group of European chestnuts from seed brought me by Major L. L. Seaman. The parent tree is famous in England for its enormous size and heavy bearing; it is said to be centuries of age and is growing upon the estate of Sir George B. Hingley, Droitwich, Worcestershire, England. My young trees are growing very thriftily. They are showing some blight spots, but this has been controlled by cutting out and painting.
(37) A group of vigorous young trees, the result of placing pecan pollen on the pistillate trees of Siebold walnut. They show the Siebold parentage so distinctly that I imagine them to be parthenogens, but we cannot tell to a certainty until they bear fruit.
(38) A hillside set out with a large number of common bush chinkapins from the East, tree chinkapins from Missouri and a number of hybrids. The chinkapins and the alder-leaved chestnuts on this side hill have been so blight resistant as to require almost no attention, and for that reason I am making hybrids between the chinkapin and the alder-leaved chestnut and the Chinese chestnut in the hope of making an excellent combination of chinkapin quality and Chinese size. Up to the present time none of my hybrids have been as valuable as either parent, with the exception of two. Two of the hybrids bear nuts about the size of the average American sweet chestnut and of first rate quality. These two hybrid trees have shown no sign of blight as yet.
(40) A hybrid between an American chestnut and a chinkapin. It blights freely like its American parent. Some of the hybrids do that while others show the resistance of the chinkapin parent. This particular tree grows lustily, and I have taken the trouble to cut out the blight every year. The leaves and general appearance are very closely like the common American chestnut. When it first began to bear, the nuts were of the chinkapin type, a single nut to the bur and hardly to be distinguished from other chinkapins. A year or two later the nuts changed in appearance, becoming distinctly lighter in color and with peculiar longitudinal corrugations of the shell. A year or so later still the tree made another change, and it now bears two or three nuts to the bur like the American chestnut, the nuts retain their light color and peculiar corrugation.
(41) A group of European hazels (Corylus avellana). Several years ago the Prince of Colloredo-Mannsfeld was visiting Merribrooke. His Highness was much interested in the experimental work in nut trees and later sent me a number of hazel nuts from one of his estates in Bohemia. Among the hazel bushes which grew from these nuts there was one which bore large, long, thin-shelled nuts of high quality. This bush, as you observe, has rather small dark leaves and stout, crooked branches. At one of the meetings of the Association I spoke of the bush as having a bony look, and Prof. J. Russell Smith referred to it in discussion as the "Bony Bush" hazel, and that name has been retained. I have grafted a number of other American and European hazels from this bush and I have sent scions to friends.
(42) A Cook shagbark hickory from Moscow, Ky., grafted upon bitternut stock. This variety bears a very large thin-shelled, irregular nut, with rather poor cleavage, but the quality of the kernel is of such distinct value that I prize the variety.
(43) An example of the spur graft. A common T cut is made in the bark of the stock and then a slice of guest bark carrying a small branch or spur is inserted. In this particular case I put in a branch about ten inches in length and you see that it is growing very well.
(44) My beautiful Merribrooke chestnut grafted upon an ordinary American chestnut stock growing by the roadside. Five years ago I noticed this little chestnut tree growing by the roadside with two stems. One of the stems was blighted and I cut it off and stopped the blight for the time being. The following year the other stem blighted and I trimmed out the blight and sprayed the stem with pyrox. In the following year I grafted the stock, but blight appeared at another point, the blight was cut out, and the stem again sprayed. In the following year blight appeared again, but at another point, and after cutting it out I put on tanglefoot, simply because I happened to have some with me when passing the tree. This year the stem has blighted again and I have cut out the blight and sprayed it, and I shall now whitewash a large part of the stock with whitewash containing a little carbolineum. The graft now in its third year is bearing one big bur. The interesting point is that this tree has blighted every year for five years, and I have kept it going along by giving it attention. This means if we are willing to take the trouble we can get the best of the blight, even with such a remarkably vulnerable tree as this one proves to be.
(45) A barren hillside covered with very handsome red pines eleven years of age, some of them grow nearly two feet per year. The soil is sandy and gravelly glacial till which will raise little else beside feather grass and sumac. The red pines are not nut pines, and attention is called to them incidentally because of their value for growing upon this sort of soil.
(46) A Korean chestnut filled with burs. The Korean chestnut does not blight quite so readily as the American chestnut, and certain individuals are fairly blight resistant. I raised several hundreds of them, but almost all of them are dead. A fairly large number are growing well and bearing without much attention. The nut is pretty good, but coarser than that of the American chestnut.
(47) A group of Tamba chestnuts from Japan. This is the favorite chestnut of the Japanese. I secured a number of the nuts, sprouted them and planted them out here in rows, intending to transplant them to permanent sites later. Finding that they were going to blight badly, I have neglected them and have allowed them to stand. One little tree among them bore a single bur at eighteen months of age and has borne steadily ever since with a heavy crop this year. This particular tree has not blighted, but its nut is coarse and of little value.
(48) When collecting walnuts I obtained a lot of nuts from a correspondent from the Mogollon Mountains in Arizona. The nut resembles that of Juglans rupestris, but is larger and thicker shelled. No one knows whether it is an undescribed species or only a distinct variety of Juglans rupestris. Several of the nuts sprouted, but various accidents happened to them and this tree now, seven years old, is the only one of the lot living. It looks very different from any American walnut I have ever seen. In fact, it looks so much like a stunted heart nut that I suspected that one of these nuts might have gotten into the lot by accident. In digging down about the stem, however, I found only the shells of a Mogollon walnut. We can not tell what the tree will bring forth, as it is not bearing as yet.
(49) Two groups of chestnut trees of the McFarland variety, about eighteen years of age. They grow and blight and bear, but have not blighted to the point of killing altogether. They have been neglected because the nut has not much value.
(50) A group of Merribrooke hazels. Some years ago I devoted several weeks to examining hundreds of hazel bushes in this part of the country, where they are a pest, and I also visited other hazel localities at a distance. Among all the bushes examined the best nut was found on my own property and I learned later that this particular bush had been known among the boys of the locality for a century. The nut is of large size for an American hazel, thin shelled, of high quality. This group consists of transplants of root progeny from the parent bush.
(51) A Horn hazel (Corylus cornuta, commonly wrongly designated as Corylus rostrata). A species fairly abundant in Connecticut, and I transplanted these bushes because they happened to have a tremendously long involucre. The nut of the horn hazel is not of such good quality as that of the common American hazel, and I have not succeeded in making hybrids between this and other hazels as yet. The hazels are very ancient in descent and each species likes to retain particular identity.
(52) A number of stocks of red birch, white birch and scrub oak grafted with European hazels and chinkapins, but the grafts all died. The grafting was done as an experiment in the hope that we might possibly utilize our waste lands which are covered with birch and scrub oak by grafting these trees with hazels and chinkapins. Some of the grafts lived for such a long time and put out such long shoots that the experiment will be tried again next year. It would not seem worth while, excepting for the fact that it was a bad spring for grafting anyway, and hazels did not even catch on hazels, though they caught freely last year. The Japanese do grafting on stocks widely different from the scions, but we have not developed that particular feature in this country as yet.
(53) Asiatic tree hazels (Corylus colurna). This species makes a tree as large as the common oaks and bears heavily. The nut is about the size of that of the common American hazel. The tree is very beautiful, and I am using it for grafting stock and for hybridizing.
(54) Sprouting cages. A double row of galvanized wire cages sunk four inches into the ground and about four inches free above ground, filled with sandy loam and used for sprouting any nuts which are to be employed in experimental work. Each cage is fitted with a cover of galvanized wire, the purpose of which is to keep out rodents which are so destructive to planted nuts. In these cages there are now a large number of hybrid nut trees growing, and they will be transplanted to permanent sites or to the garden for culture next spring.
(55) Japanese heart nut (Juglans cordiformis). The tree is supposed by some botanists to be a form of the Siebold walnut, but it has quite a different appearance. It has an open habit with large leaves and nuts which are suggestive of the conventional heart. The quality of the nut is very good, much like that of the Siebold, but the nut is larger and compressed. The tree is very hardy and is almost tropical in appearance. It has not been planted very largely in this county, but it undoubtedly will be eventually.
(56) Siberian walnut. The tree looks much like the Siebold walnut in general appearance, but with smaller leaflets, and the nut is very much like our butternut, but smaller and with much rougher shell.
(57) Two pecan trees that I bought from a nursery about twelve years ago. They have not borne as yet and being seedlings we cannot know if they will be of value. I shall probably graft them next year and not wait for them to bear their own nuts.
(58) Two large Siebold walnuts only twelve years of age, but growing in rich ground and sometimes making five feet of growth in a single year. They were well filled with nuts two weeks ago, but the red squirrels have cut down all of the nuts including numbers which I hybridized with English walnut pollen this spring. On one of the lower branches of one of the Siebold walnuts is a long thrifty graft of the Lutz black walnut that I put in this spring, simply because I happened to cut off the lower branches of the Siebold that were shading the garden, and I happened to have some of the black walnut scions with me at the time. It will not be allowed to remain on this tree.
(59) A cross between our Siebold walnut and our butternut, now about eight years old, but growing thriftily. It has not borne nuts as yet. I have a number of these trees and they appear to be good hybrids.
(60) A group of Kaghazi Persian walnuts. A valuable variety and one of the so-called English walnuts, a term that we use for convenience because the name has become established in this country by the market men, not by the botanists.
(61) A thrifty young Chinese seedling persimmon (Diospyros lotus).
(62) Little trees of one of the nut pines (Pinus edulis). They are at their best in the arid mountains of Arizona, and the species is very important as furnishing a food supply for the Indians. The little trees are hardy here in dry soil among the rocks, but do not grow rapidly. Mine have been in more than six years and are not more than six inches in height, but are very pretty.
(63) The Chinese Tamopan persimmon. The tree is very handsome, with large glossy leaves, but somewhat tender in Connecticut and requiring protected exposure. The fruit of the Tamopan is as large as a very large apple.
(64) Several trees five years of age, the result of English walnut pollen on Siebold walnut pistillate flowers. The trees are growing very thriftily, but they show the Siebold characteristic without much evidence of the English walnut parentage.
(65) A field of Pomeroy English walnuts, notable for their beautiful white bark. The trees have been in over eight years and set nuts for the first time this year. As seedling trees we cannot tell what they will do when in full bearing.
(66) Two species of nut bearing pines from which the marking labels have become lost, and I shall not be able to determine the species until they bear cones. One of them is very beautiful, with long leaves and pleasing bluish green foliage.
A VISIT TO THE ESTATE OF THE LATE LOWELL M. PALMER, NOTABLE FOR ITS COLLECTION OF TREES AND SHRUBS, DR. MORRIS CONDUCTING.
Here we see the Ginkgo trees, two of them bearing. The Ginkgo belongs by descent to the coniferous tree group. A very fine tree with nuts that are highly prized by the Asiatics, but somewhat too resinous for the American palate. Most of the Ginkgo trees are males, but one may graft any number of males with bearing female scions.
An Araucaria imbricata grew for twenty years on this place, and we have only just learned that it died last year. This pine is one of the most important of the nut pines and furnishes a large food supply in South America. The fact that one tree lived for twenty years in this latitude means a great deal.
A number of European hazel bushes are growing on the property and bearing heavily. A large heart nut tree, but bearing small nuts, is growing well. Several of the Himalayan nut pines (Pinus excelsa) beautify the property, and one of the trees, heavily laden with cones, is at least fifty years of age. Another one of the nut-bearing pines (Pinus paviflora, from Japan) is represented by several specimens on the Palmer property, and one little tree apparently less than ten years of age, is heavily loaded with cones. Incidentally we may examine here a trifoliate orange filled with fruit. It is growing in a well protected corner of the grounds. Mr. Webber sent some valuable trifoliate hybrids to Merribrooke. One variety lived through the winter, but made a crippled start in the spring. Some day we may have good trifoliate orange hybrids in Connecticut if the Buckley hickory, Stuart pecan, Arizona walnut and imbricated pine grow here.
A dinner was held at the Hotel Davenport on the evening of the 5th, at which about thirty-five members and guests were present. After dinner the public was admitted and the following papers were read, Mr. Collingwood being a guest of the Association:
Dr. Kellogg: I feel a great interest in the work of this Association and a great sympathy with it. I feel that you are all working for me and I am doing what I can to promote your interests also. That is, I am trying to create a market for your products.