SUBS1 CTlOh ( wi \ROPHYLLOPSIS 7/ 



18 



Hygrophorus uliginosus, sp. no\. 



Pileus 2.5-3 cm lotus, convexus, fdaber, udus, cinnamomeo' 

 brunneus; ad marginem substriatus; lamellae decurrentes, distantes, 

 angustae, pallida vinaceo-brunneae; stipes 3-6 cm longus, i / mm 

 crassus, earns, fragilis, glaber, pileo subconcolor; sporae S-- 10 I 5.5 i>. 

 Specimen typicum in Herb. Univ. Mich, conservatum, legii prove 

 Rose City, Mich., Smith 3192.3. 



Pileus 2.5-3 cm broad, convex, glabrous, moist .m<l hygrophanous, 

 dark dull rusty to vinaceous brown, not viscid, "w arm sepia" to 'russet 

 or "Rood's brown" throughout when moist, Fading more or less to 

 "wood brown" ( dark rusty brown fading to pale dull vinaceous brown 

 at times the margin striate in age. Context eoneolorous to pallid 

 (faded), thin, fragile; odor and taste mild. 



Lamellae decurrent, distant, narrow, "fawn color" (pale vinaceous 

 brown) to 'wood brown," edges even. 



Stipe 3-5 cm long, 3-4 mm thick, eoneolorous with the gills above. 

 "cinnamon drab" (gray tinged with cinnamon) below, equal, hollow, 

 fragile, glabrous. 



Spores 8-10 X 4-5.5 /x, ellipsoid, smooth, thin-walled, hyaline in 

 KOH and yellowish in Melzer's reagent. Basidia 38-50 x 7-9 //. 

 4-spored, hyaline in KOH, yellowish in Melzer's reagent. Pleuro- 

 cystidia and cheilocystidia none. Gill trama of intricately interwoven 

 hvphae, 6-9 /x broad, orange-yellowish in Melzer's reagent ( sub- 

 hymenium same color). Pileus trama homogeneous, or showing a rudi- 

 mentary, non-gelatinous cuticle of radial, repent, brownish hvphae, all 

 tissues yellowish in Melzer's reagent. Clamp connections present. 



Habit, Habitat, and Distribution — Scattered to gregarious on 

 muck in cedar swamps and in Sphagnum bogs, autumn, Michigan, 

 Trinidad, and Europe. 



Material Studied — Michigan: Smith 1160, 31925, 31952 (type, 

 from Rose City, Oct. 16, 1948). 



Observations — We earlier (1942) referred this species to // 

 subradiatus, but this is not tenable in view of the whitish gills as de- 

 scribed and illustrated for the European species. Actually, //. stih- 

 radiatus is more like H. recurvatus (see discussion of that species 

 H. uliginosus differs from //. colemannianus by its non-viscid pileus. 

 slightly larger spores, different habitat, and colored stipe. However, it 

 appears to be most closely related to //. colemannianus, espeeialK in 

 pigmentation. 



