230 SECTION HYGROCYBE 



Spores 5-7(8) X 3-4(5) /x, broadly ellipsoid, smooth, yellowish in 

 Melzer's reagent. Basidia (25)38-66 X 4-7 /x, 2- and 4-spored. Pleuro- 

 C) stidia none; cheilocystidia 25-52 X 1.5-2.5 /x, slender-filamentous, at 

 times branched, projecting. Gill trama parallel or subparallel, hvphae 

 7-20 fi broad, the subhymenium usually more or less gelatinizing. 

 Pileus trama homogeneous beneath a thick gelatinous pellicle. Cuticle 

 (an ixotrichodermium ) of more or less erect, gelatinous, narrow 

 (1-3 fx) hyphae. No hypodermium differentiated. Pileus trama radial. 

 Clamp connections present on the cuticular hyphae, at times rare. 



Habit, Habitat, and Distribution — Gregarious on damp soil in 

 woods and on moss in bogs, Canada, Maine, Massachusetts, New York, 

 Maryland, Pennsylvania, West Virginia, North Carolina, Tennessee, 

 Alabama, Florida, Ohio, Michigan, Texas, Idaho, California, Oregon, 

 and Washington; Belgium; May-December. Singer (1951) reports it 

 from South America and Hongo (1951b) from Japan. 



Material Studied — Alabama: Burke, Montgomery, Dec. 26, 1920, 

 72, 76, 77, 87. California: Smith 9146, 9171, 56410. Florida: Singer 

 F490; Murrill F18737 (type of H. roseiceps, Feb. 13, 1939). idaho: 

 Kauffman, Copeland, Sept. 7, 1922; Wehmeyer, Copeland, Sept. 8, 

 1922. maine: Bigelow 3638, 3784, 4056; Rea, Raymond, Aug. 2, 1940. 

 Massachusetts: Bigelow 6205, 7018, 7034, 7132, 7222, 8345, 8976; 

 Simon Davis (type of H. davisii, from Stow, Aug. 29, 1905). Michigan: 

 Imshaug 4810; Smith 1305, 1560, 1569, 1570, 1607, 6563, 6665, 7698, 

 9620, 18420, 21853, 21901, 25088, 33166, 33211, 33613, 33624, 44131, 

 49800, 50112; Thiers 815, 2944, 3239, 3277, 3493, 3552, 3661, 3882. 

 new york: Cornell Univ. Herb., as H. peckii Atk.; Atkinson 20311; 

 Bigelow 5075; Bradfield 13040; Mencke 24239; C. O. Smith 9649, 

 9733, 9759; Whetzel 9870; A. H. Smith 410 (Univ. Mich. Herb.). 

 north Carolina: Coker 2796, 3112; Hesler 4407, 8058, 12268, 24346; 

 King & Hesler 9456; Sharp 4412, 4413; Sharp & Hesler 8249, 9249, 9311, 

 12747, 14259; Smith & Hesler 7392, 9766, 11726. ohio: Walters, Cleve- 

 land, Aug. 22, 1934. Oregon: Smith 19064, 19218. Pennsylvania: 

 Krieger 1660. Tennessee: Bain & Hesler 7904; Hesler 4381, 4430, 4435, 

 9153, 11543, 12883, 24494; Sharp 7965, 8149; Sharp & Hesler 4404; 

 Sharp & Underwood 7929. texas: Thiers 1816. Washington: Im- 

 shaug 1019, 1792, 1793; Slipp 1167; Smith 2670, 16478, 16652, 29419, 

 30010, 30446, 30578, 40646; Smith & Bigelow 49085. west Virginia: 

 Sharp 12735. Canada: Bigelow 5870; Groves & Hoare 28859; Jackson, 

 Aug. 28, 1936; Smith 565. Belgium: Heinemann 2970. 



Observations — The following notes are based on eight collections 

 of //. peckii Atk., determined by Atkinson (the type not specified): 

 Spores 5.5-8 X 3.-5-5 /x, ellipsoid, smooth, yellowish in Melzer's reagent. 



