. Descriptions of new species of fungi. Fungi. 182 DECADES OF MAINE Puccinia, Pers. Spores of two kinds. Early spores, or Uredo spores, globose or nearly so, unicellular, at first with a short peduncle which ultimately falls away, yellow or brown. Later spores uniseptate, supported on a distinct peduncle. This genus is largely represented in North America. Very few are yet known from Maine. Puccinia graminis, Pers. Uredo-form, (Trichobasis rubigo-vera, Lev.) Spots yellow, heaps oval, scattered, generally on the upper surface; epidermis at length bursting longitudinally ; spores sub-glo
. Descriptions of new species of fungi. Fungi. 182 DECADES OF MAINE Puccinia, Pers. Spores of two kinds. Early spores, or Uredo spores, globose or nearly so, unicellular, at first with a short peduncle which ultimately falls away, yellow or brown. Later spores uniseptate, supported on a distinct peduncle. This genus is largely represented in North America. Very few are yet known from Maine. Puccinia graminis, Pers. Uredo-form, (Trichobasis rubigo-vera, Lev.) Spots yellow, heaps oval, scattered, generally on the upper surface; epidermis at length bursting longitudinally ; spores sub-globose, reddish brown, easily dispersed. Ravenel, Fung. Car. Ex. i. No. 100. Septate form—Spots pale, diffuse ; sori linear, confluent, am- phigenous; spores at length black, clavate, very slightly con- stricted, uniseptate. On the leaves and culms of corn and grass. (Westbrook, E. C. B.; New York, W. TV". D.) ( Uredo Rubigo. Scliweinitz Fung. Am. Bor. No. 2817.) (Puccinia graminis. Schw. Syn. Car. No. 492. Fung. Am. Bor. No. 2905. Lea, Pla'nts of Cincinnati, p. 70. -Ravenel, Fungi Car. Ex. i. No. 99.) Puccinia striola, Link. Uredo-form—(Trichobasis Caricina, B.) Spots reddish; sori oval, minute, scattered, surrounded by the ruptured epidermis; spores sub-globose, reddish, then brown. Septate form—Spots pallid ; sori linear, crowded, distinct, sub- convex ; spores at length black,oblong and slightly constricted, or obovate and not constricted. On sedges, rushes, &c. (Westbrook, E. C. B.) (Schweinitz, Fung. Am. Bor. No. 2906.) Puccinia Circaeee, Pers. Uredo-form—Uncertain. Septate form—Spots obliterated; sori minute, semiglobose, crowded into subrotund patches, occasionally confluent, generally covered with the epidermis. On leaves of Circaza. (Westbrook, E. C. B.) (Schweinitz Syn. Car. No. 491. Fung. Am. Bor. No. 2938. Lea, Plants of Cincinnati, p. 70.) Puccinia Violarum, Link. Uredo-form (Trichobasis Violarum, Berk.) Spots yellowish; sori subrotund, scattered,
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectfungi, bookyear1890
