si BSECTION MICROSPOR1 91 



tricately interwoven, hyphae narrow, L.7-2.3 // broad. Cuticle fibrillose, 

 hyphae repent to more or less erect, appearing slightly subgelatinous. 

 Clamp connections present on the cun'cular hyphae. 



Habit, Hum \ i. \\d Distribution — On soil, in Maine. Massachu- 

 setts, and Alabama, September and October. 



Material Studied — Alabama: Burke 85. MASSACHUSETTS: Peck 

 (type, collected by Dr. G. E. Francis. Sept.). 



Observations — In the above description the macroscopic charac- 

 ters are taken from Peck's account. The description of microscopic 

 characters is based on our study of the type. 



This species is related to //. sphaerospOTUS which has broader hy- 

 phae in its gill trama, more spherical spores, and broader lamellae. 



34 



Hygrophorus silvaticus, sp. nov. 



Pileus 3-6 cm lotus, convexus, se amplified us feme planum, hygro- 

 phanus, "vinaceous buff" madidus demum albidus; adore ct gustu mi- 

 tis; lamellae decurrentes, albae, angustae, distantes; stipes 4-6 cm 

 longus, 4-9 mm crassus, albus, siccus, apice nudus, bast obscurus; spo- 



rae 6-7 X 4 fx, ellipsoideae. Specimen typicum in Herb. Univ. of Mich.: 

 ledum in Washtenaw County, Mich., Sept. 22, 1961, Smith 64392. 



Pilens 3-6 cm broad, broadly convex with an incurved margin, ex- 

 panding to nearly plane, margin lobed and irregular in age at times, 

 surface glabrous, moist, hygrophanous, "vinaceous buff," moist, fading 

 to a chalky white and retaining this color when dried. Context thin but 

 waxy, white; odor and taste not distinctive. 



Lamellae decurrent, narrow, distant, strongly intervenose, waxy, 

 white and merelv pallid as dried, edges even. 



Stipe 4-6 cm long, 4-9 mm thick at apex solid, white within and 

 unchanging, surface glabrous, dull white and dry, naked at apex, sur- 

 face at the base dingy yellowish, whitish when dried except for the 

 dingy base. 



Spores 6-7 x 4 fx, ellipsoid, smooth, non-amyloid. Basidia 4-spored. 

 Pleurocystidia and cheilocystidia none. Gill trama of intricately inter- 

 woven hyaline hyphae. Epicutis of pileus of repent narrow (2.5-4 fx), 

 hyaline, non-gelatinous hyphae. Clamp connections present. 



Habit, Habitat, and Distribution — Gregarious on low wet 

 ground under hardwoods (Quercus, Acer, I'lmus and Fraxinus). 

 Sharon Hollow, Washtenaw County, Mich., Sept. 22, 1961, Smith 

 64392, type. 



Observations — The narrow gills along with the pale color of the 

 pileus serve to separate the species from both H. pratensis and //. al- 



