. 1^ ^t' 2> Fig. jb. — Tympanisconspcrsa. i, gi'oup of fungi on wood. 2, section of same; 3, ascus containing numerous spores; 4, spores ; 5, conidia. Figs. 2-5 mag. mixed with the ascophores, 0-5-1 spermatia cylindrical, 2-5 x A variety called wr?//(Rehm.), having fewer ascophores, 4-10 in a cluster, occurs on bark of apple, hawthorn, mountain- ash, and other rosaceous plants. CRYPTOMYCES (Grev.) Ascophores immersed in a white stroma covered by the blackened epidermis which is firmly united to the black crust of the stroma, finally opening by long cracks ; asci cylindrical, 8-spored;

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. 1^ ^t' 2> Fig. jb. — Tympanisconspcrsa. i, gi'oup of fungi on wood. 2, section of same; 3, ascus containing numerous spores; 4, spores ; 5, conidia. Figs. 2-5 mag. mixed with the ascophores, 0-5-1 spermatia cylindrical, 2-5 x A variety called wr?//(Rehm.), having fewer ascophores, 4-10 in a cluster, occurs on bark of apple, hawthorn, mountain- ash, and other rosaceous plants. CRYPTOMYCES (Grev.) Ascophores immersed in a white stroma covered by the blackened epidermis which is firmly united to the black crust of the stroma, finally opening by long cracks ; asci cylindrical, 8-spored; spores continuous, hyaline, elliptical. Forming large black patches on branches, superficially resembling Rhyiisma, differing in the spores and white stroma.

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Keywords: ., bookpublishernewyorkmacmillan, booksubjectplantdis, bookyear1910