Abstract

Hysterographium Cocos Weedon, sp. nov. The hysterothecia appear as small black excrescences upon diseased spots of leaves, gregarious, 0.25-1 mm. long, black, carbonaceous, erumpent, superficial; opening by a long, narrow slit; asci 88-77 X 10/x, 8-spored, spores hyaline at first, becoming dark when mature; muriform, 3-5 transverse septa with numer? ous longitudinal walls, 14-17 X 7-10 /z, slightly larger at one end than at the other. Paraphyses present. On Cocos Alphonsei, St. Petersburg, Florida, Feb. 15, 1923, No. 4 (type).

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