NOTICES OF NORTH AMERICAN FUNGI. 170 



Subiculum obsolete ; hymenium consisting of branched creeping 

 threads, each branch of which bears at the tip a cluster of dirty 

 yellow subglobose spores. 



262. Corticium vagum. B. if C. — Subiculo arachnoideo reticulato 

 flavido subfulvo; hymenio efloccis repentibus apice sporiferis enato, 

 fibrillas ambiente. No. 3240. On pine. 



Subiculum forming a reticulate spidery web, round the reticula- 

 tions of which the hymenium is formed at the top of short processes ; 

 varying from dirty white to pale tawny. 



2G3. Corticium olivascens. B. <L- C. — Subiculo albo floccoso 

 fibrillas hie illic emittente ; hymenio pulverulento olivaceo-luteo hie 

 illic margine albo. No. 6392. Boston, Murray. 



Subiculum consisting of white threads, which send out delicate 

 filaments over the bark ; hymenium occasionally with a white 

 border, pulverulent yellow-olive. 



264. Corticium prasinum B. # C— Rav. Fasc. v., 29. Subiculo 

 parco arachnoideo ; hymenio continuo tenui fragili prasino ; margine 

 albo. No. 6080. Alabama, Peters. On the ground under 

 Liquidambar. 



Subiculum delicate spidery ; hymenium thin brittle continuous, 

 with a white margin when young. 



265. Corticium c hi or i num. B. & C. — Tenue fragile olivaceum 

 demum granulatum. No. 6109. Alabama, Peters. On Abies. 

 Forming a thin, brittle, olive-green membrane, which is at first 

 pulverulent, but afterward rough, with minute papillse ; resembling 

 such Thelephora3 as T. laxa, &c. 



266. Corticium hypopyrrhinum. B. <k C— Subiculo pyrrhino 

 marginem hie illic tenuissimum formante ; hymenio albido. Rav. 

 No. 1704. Car. Inf. Apparently on vine. 



Subiculum extremely thin rufous, sometimes forming a slight 

 margin ; hymenium dirty white at first pulverulent. 



267. Corticium cervicolor. B. & C— Subiculo delicato byssoideo ; 

 hymenioque cervinis. No. 4026. Alabama, Peters. On smooth 

 wood. Fawn-coloured. 



Subiculum very delicate byssoid, spreading over the wood, but 

 scarcely forming a distinct margin ; hymenium of the same colour, 

 scarcely pulverulent. 



268. Corticium martianum. B. <i- C— Rav. Fasc. v., 30. Subiculo 

 tenuissimo fulvo ; hymenio croceo. No. 6251. Boston, Sprague. 

 Forming little detached patches, very irregular in form. On rough 

 wood. 



Subiculum very thin, tawny, covered here and there with the 

 saffron yellow hymenium. Allied to C. peroxydatum, B. & Br. A 

 Ceylon species. 



269. Corticium dryinum. B. # C— Subiculo vix distincto ; hy- 

 menio crassiusculo rhabarbarino-rufo. No. 5204. Alabama, Peters. 



