Prunus hortulana mineri?
1. Wis. Sta. Bul. 63:61 fig. 30. 1897. 2. Ia. Hort. Soc. Rpt. 112. 1899. 3. Am. Pom. Soc. Cat. 38. 1899. 4. Wis. Hort. Soc. Rpt. 69. 1900. 5. Ia. Sta. Bul. 46:289. 1900. 6. Wis. Sta. Bul. 87:18. 1901. 7. Waugh Plum Cult. 175. 1901. 8. Ia. Hort. Soc. Rpt. 228. 1904. 9. Ill. Hort. Soc. Rpt. 426. 1905. 10. S. Dak. Sta. Bul. 93:39. 1905.
Surprise is one of the best of the native plums in the Station orchard. The fruits are very attractive in appearance and while not of the rich flavor of the Domesticas they are yet of pleasant flavor with an abundance of juice which together make this a most refreshing fruit. The fruits keep well and would probably ship well. The color is a peculiar red which serves to identify the variety; on the whole the fruits resemble the Americanas while the trees are rather more of the Miner type. The variety is productive in New York and is so spoken of in Wisconsin by Goff,[224] but in Iowa it is said not to bear abundantly. If a native plum is wanted in New York, this variety is worthy a trial.
Surprise, according to the originator, Martin Penning of Sleepy Eye, Brown County, Minnesota, is the best of a thousand or more seedlings grown from pits of De Soto, Weaver and Miner sown in 1882. In 1889, Penning introduced this plum and ten years later it was added to the fruit catalog list of the American Pomological Society. The parentage of the variety is unknown but it has usually been thought that the botanical characters indicate that it is a seedling of Miner. As the tree grows here, (they came to the Station from Mr. Penning,) it appears to be a hybrid of Prunus americana and Prunus hortulana mineri, characters of both species being evident.
Tree large, vigorous, upright, dense-topped, hardy, productive; trunk roughish; branches smooth, zigzag, thorny, dark ash-gray, with numerous, small lenticels; branchlets slender, medium to long, with long internodes, green changing to dark chestnut-red, with brownish-gray scarf-skin, glossy, glabrous, with numerous, conspicuous, small, raised lenticels; leaf-buds small, short, obtuse, plump, appressed.
Leaves falling early, folded upward, oval or ovate, two inches wide, four and one-half inches long, thin; upper surface light green, glabrous, smooth, with a grooved midrib; lower surface pale green, lightly pubescent; apex taper-pointed, base abrupt, margin often coarsely and doubly serrate, with amber glands which are not persistent; petiole thirteen-sixteenths inch long, slender, reddish, sparingly pubescent along one side, glandless or with from one to five small, globose, yellowish-brown glands usually on the stalk.
Blooming season intermediate in time and length; flowers appearing with the leaves, three-quarters inch across, creamy-white, with a disagreeable odor; borne in clusters from lateral buds, in threes or in fours; pedicels three-eighths inch long, slender, glabrous, green; calyx-tube greenish, campanulate, glabrous; calyx-lobes narrow, acute, pubescent on the inner surface, serrate and with reddish glands, erect; petals roundish-ovate, entire, narrowly clawed; anthers yellowish; filaments one-quarter inch long; pistil glabrous, equal to the stamens in length.
Fruit mid-season, ripening period short; one and three-eighths inches by one and one-eighth inches in size, halves equal; cavity shallow, flaring; suture very shallow, distinct; apex roundish or depressed; color dark red, covered with thin bloom; dots numerous, medium to large, russet, conspicuous, clustered about the apex; stem one-half inch long, glabrous, adhering to the fruit; skin thick, tough, clinging; flesh golden-yellow, juicy, fibrous, somewhat tender, sweet, insipid; quality fair; stone clinging, one inch by five-eighths inch in size, oval, flattened, pointed at the base and apex, with smooth surfaces.
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