CLASSIFICATION 435 



C. luteoalha and C. persimilis are usually mistaken for forms of 

 C. incequalis. The latter may be distinguished from these by its 

 fairl}^ large size, deep yellow colour, which remains practically un- 

 changed when dry, and, above all, by its warted spores. The much 

 smaller C. litteoalba is known by its apricot colour, which turns 

 pale buff on drying, and by its smooth, ovoid spores. The equally 

 small C. persimilis is distinct in its orange hue, wiiich deepens on 

 drying, and in its subglobose, apiculate spores. 



C. argillacea. — Hymenophore simple, fragile, club-shaped or 

 cylindrical, tip usually blunt, greenish yellow ; stem yellowish, 

 f-ij in. high (spores colourless, elliptical, 7-9x5-6 jj). 



Easily distinguished by its blunt clubs of a pale greenish yellow 

 colour and the elliptical spores. 



In heathy places. Rather rare. 



***** Plants yellowish brown, usually tough. 



C. pistillaris (PI. [XXXIV, fig. 6.) — Hymenophore simple, 

 clavate or obovate, minutely velvety, whitish, then dingy 

 yellow, finally dusky brown, size variable, 4-12 in. high, 1-2 

 in. thick at the widest part (spores white, elliptic-oblong, 

 12-16x7-8 /x). 



Either club-shaped and tapering to a narrow base, or sometimes 

 broadl}^ elliptical or irregularly subglobose ; flesh whitish, stuffed 

 in the centre, that is, texture loose and cottony. ^ J 



On the ground in woods. Not uncommon, but very sporadic in 

 its appearance. 



C. ligttla (PI. XXXIV, fig. 7). — Hymenophore clavate, much 

 narrowed downwards, base downy, ochraceous with a rufescent 

 tinge, tip blunt, 2-4 in. high, up to | in. thick above (spores colour- 

 less, elliptical, 11-13x4-5 /a). 



Smaller and not so dark-coloured as C. pistillaris ; also differing 

 in the white downy base. 



Attached by down to leaves, twigs, etc. 



C. fistiilosa.- — Hymenophore slender, narrowly clavate, soon 

 hollow, pale yellow, then rusty, 2-3 in. high, 1-3 lines thick at the 

 tip (spores colourless, elliptical, 14-15x6-7 /a). 



Attached by the downy root to twigs, etc. 



C. jimcea. — Hj'menophore very slender, weak, wavy, tip acute, 

 soon hollow, pale dingy j-ellow, then tinged rusty, the long, creeping 

 stem downy (spores colourless, elliptical, 10-12x5 ji). 



On dead fallen leaves, twigs, etc. Gregarious. 



B. Plants unbranched, tufted, clubs crowded together at the base. 

 * Plants white. 



C. vermicularis.- — Hymenophores densely tufted, white, cylin- 

 drical, tips acute, usually straight, about 2 in. high (spores 

 colourless, elliptical, 4x3 /tt). 



