[Vol. 3 

 220 ANNALS OF THE MISSOUKI BOTANICAL GARDEN 



New Jersey: Newfield, J. B. Ellis, in Ellis, N. Am. Fungi, 

 421, and also the cotype of Grandinia tahacina (in N. Y. 

 Bot. Gard. Herb.). 



OMo: A. P. Morgan, 525 (in N. Y. Bot. Gard. Herb., under 

 the manuscript name Odontia olivacea). 



10. H. olivascens (Berk. & Curtis) Burt, n. comb. 



Zygodesmus olivascens Berk. & Curtis, Grevillea 3:145. 

 1875. 



Type: type and cotype in Kew Herb, and in Curtis Herb. 



Fructification effused, thin, not separable, tomentose, ci- 

 trine, yellowish citrine or buffy citrine, the margin thinning 

 out; KHO solution dissolves some of the color 

 upon coming in contact with the sections and 

 becomes somewhat brownish in their vicinity; 

 Fig. 10 in structure 150-200)u, thick, with now and then 

 ^' f'^'^Q^^^' ^ hypha running along the substratum and 

 sending out suberect branches which branch re- 

 peatedly, become loosely interwoven, and are somewhat clus- 

 tered; basal hyphae slightly colored, nodose-septate, thin- 

 walled, 5-6/A in diameter; basidia with 4 sterigmata; spores 

 subglobose, concolorous with the basal hyphae, aculeate-echin- 

 ulate, the body about 6fi in diameter or 5y2--7i/2 X 5y2-7ju. 



Fructifications sometimes in little patches 1-2 cm. long, 

 1%-! cm. broad, sometimes growing more or less interrupt- 

 edly over areas up to 15 cm. long, 3 cm. broad. 



On very rotten wood and on bark of fallen branches of 

 both coniferous and frondose species. New Brunswick to 

 South Carolina. September to November. Probably com- 

 mon. 



H. olivascens is readily distinguished from other species 

 of Hypochnus by its conspicuous citrine color of some kind 

 (flavovirens of Saccardo's ^Chromotaxia') which has been 

 retained well by the original collection for more than sixty 

 years. From the description, Tomentella flavovirens v. 

 Hohn. & Litsch. is but slightly, if at all, different from H. 

 olivascens. 



