SI BSECTION n \K l l 199 



Material Studied — iowa: Mcllvaine (Peck's type). 



Observations — The microscopic characters given above are based 

 on our stuck of the type. 



Peek says: "The Fresh plan! is said to have no decided odor, but 

 when partly dried it omits a slight but rather unpleasant odor. It be- 

 longs apparently to the section Camarophyllus, and is related to Hy- 

 grophorus peckii." Murrill followed Peck in placing this species in 

 Camarophyllus, but it clearly belongs in the section Hygrocybe. 



113 



Hygrophorus fornicatus Fr. 

 Epicr. Myc, p. 327. 1838 



Camarophyllus fornicatus (Fr.) Karsten, Bidr. Finl. Nat. Folk. I: 227. 



1879. 

 Hygrocybe fornicata (Fr.) Singer, Lilloa 22: 152. 1951. 



Illustrations: 



Lange, Flora Agar. Dan. 5, pi. 165C (as Camarophyllus fornicatus 



[Fr.] Karst). 

 Ricken, Die Blatterp., pi. 7, fig. 8. 



Pileus 4-6 cm broad, obtuse when young, the margin incurved, be- 

 coming obtusely umbonate with an expanded plane margin, whitish. 

 or tinged pale gray over the disc, unchanging when bruised, the mar- 

 gin finally somewhat wavy and splitting radially, glabrous, viscid ( the 

 pellicle separable as a thin skin), margin faintly translucent striate 

 when moist. Context firm, thin, waxy; odor and taste none; no color 

 change noted. 



Lamellae sinuate to adnexed, white, not changing color when 

 bruised, subdistant, broad, thickish, firm, rigid, waxy, intervenose, 

 edges even. 



Stipe 3-6 cm long, 10-15 mm thick at the mid-portion, flaring at 

 the apex or equal, white over all, hollow or soon becoming so, surface 

 moist but not viscid, with scattered innate appressed silkv fibrils, apex 

 somewhat fibrillose-scabrous. 



Spores 7-9 x 4.5-5.5 /*, ellipsoid to subovoid, smooth, colorless in 

 Melzer's reagent. Basidia 36-54 X 6-8 /*, 2- and 4-spored. Pleurocystidia 

 and cheilocystidia none. Gill trama subparallel, hyphae 6-15(25) p 

 broad. Lactifers present in the gill trama, 4-7 jx broad. Cuticle of gelati- 

 nous hyphae forming a transparent zone 175-225 p broad. Clamp con- 

 nections present on the cuticular hyphae. 



Habit, Habitat, and Distbibutiox — Singly under redwoods. Cali- 

 fornia, December; also Europe. 



Material Studied — California: Smith 9394. 9459. biioum: 



