Omphalia AGARICACE^E 83 



membranous, umbilico-infundibuliform, hygrophanous. Stem simple, 

 central, cartilaginous, fistulose or stuffed, more or less lustrous, some- 

 times hair-like. Gills decurrent. Spores more or less elliptical, 

 smooth. (Fig. 19.) 



Many of the species are small, beautiful and generally epiphytal. 

 Odour obsolete or nearly so. Mostly peculiar to hilly positions, 

 preferring damp, woody situations and rainy seasons. 



The species must not be confounded with the thick-gilled species 

 of similar structure found amongst the Cantharelli. 



Species 367—406 



Collybiarle (from the resemblance to Collybia). Pileus with a 

 deflexed margin. 



a. Hydrogrammcz. Comparatively large. Gills narrow, very 



crowded, arcuate, from the first truly decurrent. 367-370 



b. Pyxidatce. Intermediate in size. Gills narrow, slightly 



distant, attenuate at both ends. 371-382 



c. Umbelliferce. Gills broad, commonly thick, very distant. 



Must not be confounded with Xerotus. 383-392 



Mycenari^e (from the resemblance to Mycend). Pileus at first 

 companulate, margin straight, pressed to the stem. 



d. Campanellce. Gills broad, perfect, unequal. 393-403 



e. Integrellce. Gills fold-like, narrow. 404-406 



COLLYBIARLE. 



a. Hydrogrammcz. 



367. 0. hydrogramma Quel, (from its watery streakings ; Gr. hudor, 



water, gramme, a line) a b. 

 P. subconvex, striate, broadly umbilicate, tan. St. subattenuate 



and villous below, tan. G. livid whitish or tan. 

 Somewhat caespitose. In woods amongst dead leaves, beech. Oct. 



2 f X 3! x 4 m - Resembles 172 in appearance. 



367a. 0. detrusa Gill, (from the umbilicus — as if pushed in ; detrudo, 

 to push down) a b. 

 P. somewhat fleshy, convex, expanded, at length umbilicate, 

 even, glabrous, indistinctly zoned, dark grey or whitish-umber. 

 St. stuffed to hollow, glabrous, dark grey or dull lavender. 

 G. subdecurrent with a tooth, thin, crowded, whitish or 

 somewhat pale ochreous. 

 Woods, amongst moss. Autumn. i§ X 2\ X j,- in. 



368. 0. umbilieata Gill, (from the umbilicate pileus) a. 



P. plane, deeply umbilicate, tan to fuscous. St. silky striate 

 above, villous below, whitish-buff. G. whitish. 



Somewhat ccespitose. Woods, chiefly pine, amongst moss. Autumn. 

 If X XJX A in. 



G 2 



