S.'iS. Mycological Bulletin Nos. 63 and 64. [Vol. I\' 



at Nantes, France, in 1905, furnished by M. Baret, is as follows : Amanita 

 cssarea, Lepiota procera, Lepiota rhacodes, Lepiota excoriata, Lepiota 

 pudica, Psalliota pratensis, Psalliota sylvatica, Psalliota bernardii, Clitopi- 

 lus orcella, ^Nlarasmius oreades, Lentinus tigrinus, Tricholoma person- 

 atum, Clitocybe laccata. Boletus edulis. Boletus aestivalis. Boletus asreus, 

 Boletus scaber. Boletus scaber var. aurantiacus, Boletus luteus, Fistulina 

 hepatica, Hydnum repandum, Craterellus cornucopioides. and Lycoperdon 

 giganteum. 



The Genus Cortinarius. — Some excellent work has been done on 

 this genus by C. H. Kauffman, at Cornell University, during the past 

 three seasons, the results of which in part are published in the Bulletin 

 of the Torrey Botanical Club for June, 1905. In a future r.umber we 

 propose to refer more fully to the article and will here only reproduce 

 the descriptions of a few of the rew species therein contained. These 

 pertain to interesting plants. Mr. Kauffman says it is absolutely useless 

 to pick up an old dried .'■pecimen of Cortinarius nnd ask any one to 

 recognize it. In the majority of cases old plants of different species 

 look so much alike that it is mere guessing to say anything about them. 

 The first thing to remember (he says) is that young, ur.expanded plants 

 must be examined as well as mature ones. Next, a careful description 

 must be made ziitit special reference to the- color (f the gills of the 

 young plants. But the remaining space must be given to some of his r.ew 

 species — these model descriptions being as follows: 



Cortinarius sterilis Kauifman n. j/>. — Pileus 1.5 — 4.5 cm. broad, 

 suborbicular when young, then convex-expanded, margin incurved, drab, 

 drab-gray to olive-buff [Ridgeway's Nomenclature], even, smooth, viscid. 

 somewhat umbonate at times, flesh white, soft, thin. Gills relatively 

 broad, 4.6 mm., drab-pray (Ridg.) at first, then light cinnamon, rounded 

 behind, then emarginate, not at all ventricose, rather crowded ; edge 

 serrulate and white, later eroded, provided zcith sterile cells. Cortina 

 white or sordid. Stem 4 to 8 cm. long, 4-6 mm. thick at base 10 mm., 

 hence clavate or tapering upward, solid, spongy, dingy-white, tinged to- 

 wards apex with li.rht blue, clothed when fresh with the delicate patches 

 of the z'iscid, universal veil, which is of the same color as the pileus, 

 within pale bluish at apex, white below. Spores 6-7x5-6.5 mic, subsphae- 

 roid, rather smooth. Plants slender. 



Cortinarius cylindripes Kauifman n. sp. — Pileus 3-7 cm. broad, 

 very glutinous at first and shining, later opaque, at the very first lavender, 

 then yellowish with a violaceous tinge, at length becoming brownish- 

 ochraceous, with the appearance of being stained with these colors at 

 various stages, obtusely orbicular when young, then campanulatc and 

 expanded, rather small in comparison with the length of the stem ; 

 margin incurved and pellucid-striate ; surface smooth, at length longi- 

 tudinally wrinkled. Flesh thick on disk, thin elsewhere, violaceous, soon 

 dingy white. Gills rather broad, at length % mm., adnate, emarginate, 

 not attenuate toward margin of pileus, violaceous or lavender when young. 

 becoming pale cinnamon, not crowded, thin, edge serrulate and paler, 

 somewhat wrinkled at the sides but rot veined. Stem 8-10 cm. long, 

 5-0 mm. thick, elastic, remarkably equal, covered by a violaceous, glutinous, 

 universal veil which sometimes remains as evanescent patches and at its 

 Junction with the partial veil as a sli^dit annulus, smooth or fibrillose- 

 striate at apex, violaceous or dingy-white within, solid or stuffed; entire 

 stem usually a beautiful pale, azure blue. Spores 1:2-1 x6.5-S mic, slightly 

 tuberculatc ; basidia about 10 mic. long. 



Gregarious, rarely cespitose. Frtirc plant is soft and quickly decays. 



Related to C. elatior. from which it differs in its equal stem, which is 

 never scaly and is always violaceous to blue; the gills are lavender when 

 young and the whole plant is very viscous. 



