64 NEW YORK STATE MUSEUM 



zonata (Peck) Sacc. This species grows on dead branches, 

 more rarely on leaves or wood mold, the plants are 3 to 8 cm high 

 and the pileus with a spread up to 3 cm. It is umber to seal brown 

 and usually the scales are arranged in prominent concentric zones. 

 The lamellae are adnexed or free and narrow. Cystidia are absent 

 on the sides of the lamellae, but are present on the edges. They 

 are clavate, usually mucronate or abruptly acute, sometimes more 

 or less irregular. They are much larger than the basidia, 30 to 35 

 X 12 to 15 )u,. The spores are oboval, 4 to 6 x 3 to 4.5 ju.. The species 

 i:-. very distinct from any of the three treated above. 



While these four species are generally placed in the genus Col- 

 lybia, they are foreign to the general characters of that genus. 

 They are dry and nonputrescent. Two of them Patouillard places 

 in his genus Crinipellis (Ess. Tax. Hym. Eur. 143. 1900), an assign- 

 ment followed by Murrill (North American Flora, 9: 287. 1915). 

 The chief characteristics of Crinipellis are the nonputrescent nature 

 of the plants, the strigose hairy pileus, and the presence of salient, 

 projecting, fusoid or unimucronate cystidia, that is, projecting 

 beyond the basidia, and presumably on the sides of the lamellae as 

 bhown in Patouillard's figure (he.) from Crinipellis 

 e X c e n t r i c a . None of the four species mentioned above has 

 projecting cystidia, except Collybia zonata, where they 

 project slightly on the edges of the lamellae. Only one of the 

 species, Collybia setipes, has conspicuous cystidia on the 

 sides of the lamellae, and they are clavate and multimucronate, not 

 salient. The strigose hairy feature ("pellicle") of the pileus is 

 the only character of these four species in which they differ from 

 the usual concept of the genus Marasmius, and a number of students 

 have remarked on the close resemblance of Collybia stipi- 

 t a r i a to Marasmius, the nonputrescent nature, coriaceous texture, 

 " inserted " stem, and form of the cystidia or sterile cells, etc. 



Crinipellis was proposed by Patouillard (Jour, de Bot., 3: 336, 

 I fig. 1889) to include plants with a more or less coriaceous texture 

 like Collybia stipitaria and related species, as well as 

 species of Marasmius having a fibrous pellicle. He later includes 

 sessile species as well as some which had been assigned to Pleurotus 

 and Lentinus (Tax. Hym. 143. 1900). In 1887 (Tab. Anal. Fung. 

 14. fig. 525) he describes and figures a cystidium in a lamella of 

 Collybia stipitaria of the same size and shape as the 

 basidia except that it tai)ers to a mucro and sliglitly ])rojects above 

 the basidia. Some of the sterile cells on the edges of the lamellae 



