Toadstools, mushrooms, fungi, edible and poisonous; one thousand American fungi / How to select and cook the edible; how to distinguish and avoid the poisonous, with full botanic descriptions. Toadstool poisons and their treatment, instructions to students, recipes for cooking, etc., etc.

by Charles McIlvaine; Robert K. Macadam

Gills or tubes in concentric circles. Stem central, subcentral or none. Atkinson. (No edible species reported.)

Merulius. Page [490].

Subgelatinous. Tubes very shallow, formed by anastomosing wrinkles; resupinate.

BOLETI´NUS Kalchb.

(Plate [CXIII], p. 402.)

Hymenophore not even (as in Boletus), but extended in blunt points descending like a trama among the tubes. Tubes not easily separable from the hymenophore and from each other. Stem ringed, hollow. Spores pale yellowish. Sylloge, Vol. VI, p. 51.

Professor Peck has for excellent reasons, given in his Boleti of the United States, emended the generic diagnosis of Fries thus: Hymenium composed of broader radiating lamellæ connected by very numerous more narrow anastomosing branches or partitions and forming large angular pores. Tubes somewhat tenacious, not easily separable from the hymenophore and from each other, adnate or subdecurrent, yellowish.

Professor Peck classifies Boletinus as follows:

	Stem hollow		B. cavipes
	Stem solid		1
1.	Stem lateral or eccentric		B. porosus
1.	Stem central		2
	2.	Pileus pale yellow, silky	B. decipiens
	2.	Pileus red or adorned with red scales	3
3.	Pileus red		B. paluster
3.	Pileus soon red-squamose		B. pictus
Boleti of the United States, p. 76.

There are six species given as found in the United States—B. cavipes Kalchb., B. pictus Pk., B. paluster Pk., B. decipiens Pk., B. porosus Pk., B. appendiculatus Pk.—of these I have found and eaten four. B. decipiens has, at this writing, not been seen by Professor Peck, but Professor Farlow, of Harvard, has informed him of authentic specimens. There is every probability of its being as edible as the others; a description of it is, therefore, given.