SI BSECTION HYGROC\ Bl 125 



Fig. 32. //. marginatus var. olivaceus 



Context thin and fragile, more or less dull olive gray; odor and taste 

 mild. 



Lamellae ascending adnate, toothed, evenly "ochraceous orange" 

 and scarcely fading, broad (5 mm more or less) close to subdistant 

 (2 tiers of short individuals, 20-30 reach the stipe). 



Stipe 3-5 cm long, 2-4 mm thick, "grape green" becoming pallid 

 greenish yellow, equal, soon hollow, very fragile, glabrous. 



Spores 6.5-8 X 4-5 /*, subellipsoid, colorless in Melzer's reagent. 

 Basidia 38-50 X 7-9 /a, 4-spored. Pleurocystidia and cheilocvstidia none. 

 Gill trama subparallel, hvphae 7-16 fx broad. Cuticle at first of repent, 

 non-gelatinous hyphae, a cutis; finallv the hvphae loosening and at 

 times more or less erect and then forming a trichodermium. Hypo- 

 dermium none. Pileus trama radial hyphae. Clamp connections none. 



Habit, Habitat, and Distbibution — Singly on very rotten wood 

 of conifers, Maine, Massachusetts, Michigan, and Washington, |ulv- 

 September. 



Matebial Studied — maine: Bigelow 3811. Massachusetts: Bige- 

 low 8419, 9113. Michigan: Mukai, Douglas Lake, July 26, 1951; Smith 

 25870, 36924, 39331; Thiers 3638, 4101. Washington: Smith 16709. 

 26633 (type, from Baker Lake, Sept. 5, 1941), 30156a. 30284, 30285, 

 30649, 30833. 



