SI BSECTlOh PS/1 TACINI 



a possibility that the collections by Dennis represent an undescribed 

 species, as the red pileus, in contrast to the colors as Murrill described 

 them, could be significant. 



A form intermediate between //. laetus and //. hondurensis was 



found ill a pasture at (.'ape Flattery, Washington. ( )ct. l ( i. l l J 1 1 Smith 

 LS021 ). It is much more cartilaginous than //. laetus, dries a dull Yellow 

 instead of pink, has gelatinous eheilocx stidia. a thick 'gelatinous 

 subhymenium, and also thick gelatinous Layers over both pileus and 



stipe. The fresh fruiting bodies are clear pale yellow and faded, as if 



hygrophanous to nearly white 1 . When dried, however, all pilei regained 



their yellow color. In all probability these specimens should he classi- 

 fied in //. hondurensis. We believe it likely that future studies of 

 //. hondurensis from the American tropics will reveal that it charac- 

 teristically has the filamentous cheilocx stidia. 



139 



Hygrophorus flavifolius Sm. & Hes. 



Lloydia 5: 72. 1942 



Hygrocybe flavifolia (Sm. & Hes.) Singer, Lilloa 22: 154. 1951. 



Pileus ( 1 )2-4 cm broad, obtusely conic, becoming convex to nearly 

 plane, color evenly "apricot yellow" (a full bright vellow), soon fading 

 to whitish over the disc, in age yellowish only along the margin, 

 pallid over all when dried, glabrous and translucent striate to the disc, 

 entire surface slimy-viscid. Context whitish, thin, fragile; odor and 

 taste mild, no color change on bruised portions. 



Lamellae broadly adnate, "cadmium yellow" (brilliant orange- 

 yellow) and retaining their color when dried, not fading in age, sub- 

 distant, broad, veined at the base, edges even. 



Stipe 4-5 cm long, 3-7 mm thick, white at all stages, equal or nar- 

 rowed below, hollow, very slimy-viscid (as in H. laetus). 



Spores 7-9 X 4-5 /a, ellipsoid, smooth, yellowish in Melzer's rea- 

 gent. Basidia 32—46 X 5-6(8) fx, 4-spored. Pleurocystidia and cheilo- 

 cystidia not differentiated. Gill trama subparallel to somewhat inter- 

 woven, hyphae 10-25 /x broad; lactifers present. Cuticle a zone of 

 gelatinous repent hyphae, an ixocutis. Hypodermium not differentiated. 

 Pileus trama of radial hyphae. 



Habit, Habitat, and Distribution — Gregarious under redwoods, 

 California, November. 



Material Studied — California: Smith 9164 (type, from Prairie 

 Creek State Park, Orick, Nov. 28, 1937). 



Observations — This very distinct species is well characterized by 



