1916] 



BURT THELEPHORACEAE OF NORTH AMERICA VI 227 



granosa Berk. & Curtis, Grevillea 1:149. 1873; Sacc. Syll. 

 Fung. 6:546. 1888. — Hypochnus granosus (Berk, & Curtis) 

 Bresadola, Ann. Myc. 1:108. 1903. — Zygodesmus bicolor 

 Cooke & Ellis, Grevillea 7:6. 1878. 



Type: in Herb. Scliweinitz. 



Fructification effused, membranaceous, separable, drying 

 Chaetura-drab to fuscous, the margin much paler, brownish 

 and floccose ; hymenium distinctly and close- 

 ly granular; in section 300-400ju. thick, with 

 hyphae 3-4/* in diameter, nodose-septate, 

 somewhat colored, thin-walled, a few running 

 along the substratum, or forming rope-like 

 strands, and sending out suberect, loosely ^^s- ^^ 



. , 1 1 T • 1 _£» J_^ 1 H. botryoides. 



interwoven branches which lorm the greater Spore, hyphai 

 part of the fructification ; KHO solution cans- stran<ix64o. 

 es an immediate change of color in the tissue 

 of the granules to between blue-green and sage-green when 

 added to bits of the fructification in microscopic prepara- 

 tions; spores concolorous with the fructification, angular- 

 subglobose, aculeate, the spore body 5-6 X 4-5/*. 

 Fructifications 1-5 cm. long, 1-4 cm. broad. 

 On rotten wood, both coniferous and frondose. New Hamp- 

 shire to South Carolina and Alabama. August to January. 

 The fuscous color of the central portion of the fructifica- 

 tion, paler margin, and occurrence of granules about 4 to the 

 mm. afford a good combination of characters for the recog- 

 nition of H. botryoides by microscopic characters. Occasion- 

 ally a fructification may vary towards Mars-brown. The 

 blue-green color produced in the granules in microscopic 

 preparations by adding KHO solution is a good positive char- 

 acter for this species, but is merely temporary. 



Specimens examined : 

 Exsiccati: Ellis, N. Am. Fungi, 420, under the name Zygo- 

 desmus bicolor C. & E. 

 New Hampshire : Chocorua, W. G. Farloiv, 12, and also a col- 

 lection of Sept., 1915 (in Farlow Herb, and in Mo. Bot. Gard. 

 Herb., 8930). 

 Vermont: Middlebury, E. A. Burt, two collections. 



