﻿6 



Cincinnati Society of Natural History. 



B. Tubules yellow, pores the same color, 

 a. Flesh changing to blue. 



2. B. chrysenteron, Bull. — Pileus convexo-plane, soft, floceose- 

 scaly, brownish or reddish; flesh yellow, red beneath the cuticle. 

 Stipe nearly equal, rigid, fibrose-striate, scarlet or 3-ellow. Tubules 

 nearly adnate; the pores large, angular, unequal, greenish-yellow. 

 Spores olive, fusiform, .012 — .013X.004 mm. 



In woods about the roots of trees and in mossy places, in spring and 

 early summer; common. Pileus 1^-3 in. broad, stipe 2-3 in. long, and 

 of an inch thick. The pileus is often areolate-rimose, and then 

 the cracks are scarlet; the color is some shade of red, olive or yellow; 

 it is sometimes nearly glabrous; the flesh is yellow, changing slightly 

 to blue when cut or broken; the stipe is slender, more or less streaked 

 with red, and often crooked. 



3. B. radicans, Pers. — Pileus pulvinate, drv, subtomentose, cinere- 

 ous or olivaceous, then reddish-yellow; the margin thin, involute. 

 Stipe tapering downward and rooting, even, yellow with a reddish 

 bloom, darker when this is rubbed off. Tubules adnate; pores 

 unequal, large, yellow. Spores olive, fusiform, .011 — .013X.005 mm. 



On the ground in woods, in summer; rare. Pileus 2-2-J in. 

 broad, the stipe about 2 in. long and -j- an inch thick. The 

 pileus is quite firm and dry, becomes reddish or brownish yel- 

 low and nearly glabrous; minute reddish scales are sprinkled 

 over the yellow surface of the stipe; the latter tapers down- 

 ward to a point which penetrates the ground a little distance; the 

 flesh is pale yellow, but I have not observed any bluish tinge, 

 although this is said to appear in the European species. 



4. B. mutabilis, n. sp. — Pileus compact, then soft, convex, then 

 expanded and depressed, dry, subtomentose, brown. Stipe stout, solid, 

 flexuous, somewhat 6ulcate, 3 T ellowish beneath the brown-punctate 

 scales. Tubules adnate or somewhat decurrent; the pores large, 

 angular, unequal, some of them compound, 3 T ellow changing to green- 

 ish-yellow. Spores olive, fusiform, .012 — .013X.0055 mm. Flesh yel- 

 low changing to blue when broken. (See Plate I.) 



In shady woods, in summer; not uncommon. Pileus 2-J--4 in. in di- 

 ameter, and f-1 in. thick, the tubes occupying about one half the 

 thickness; stipe 2-3 in. long, about -J in. thick in the middle, and in- 

 creasing in thickness above and downward. The flesh in both the 

 stipe and pileus is a beautiful bright yellow, which changes promptly, 



