Cryptogamic botany / by J. Cardot [and others].

Date:
1910
Catalogue details

Licence: In copyright

Credit: Cryptogamic botany / by J. Cardot [and others]. Source: Wellcome Collection.

    59/536 page 37
    Chiefly differs from the ascidial form of Puccinia gentiance in the grouping of the spermogonia and the form of the peridia. -®cidium alaskanum Trelease, sp. nov. * Spots pale, mostly elliptical, about 5 X 5-10 mm. Spermogonia wanting; aecidia amphigenous, but most abundant on the lower surface, about .25 mm. in diameter, with multifid recurving border, peridial cells about 28 broad; spores little longer than broad, nearly smooth, 16-20^. Kadiak (Trelease, 652, on Habenaria bracteata^ 652(2, on H. hy- perborean 653, 654, 655, 656, 657, on H, dilatata; Trelease, 650, on Orchis aristata') ; Popof Island (Kincaid ; Saunders, 658, 659—all on Habenaria dilatata') ; Unalaska (Trelease, 651, on Orchis aristata) ; near Ocean Cape, Yakutat Bay (Funston, on Habenaria dilatatan 52) ; Bering Island (Macoun, on Habenaria bracteata^ 144)* Of the general appearance of A. orchidearu?}!^ now held to be the aecidial stage of Puccinia fnolmicEn but differing in the absence of spermogonia and in its larger peridial cells and smaller, less sculptured spores. .^cidium epilobii De Candolle.* Glacier Bay (Coville & Kearney, 952) ; Kadiak (Trelease, 659a), On leaves of Epilobium, ^cidium violascens Trelease, sp. nov.* Spots large, irregular, effuse, violet especially on the upper surface of the leaf, frequently following the veins which are then thickened. Sori hypophyllous, scarcely .5 mm. in diameter, hemispherical, crowded irregularly or along the veins ; peridia included, borderless, the irreg- ularly oblong cells about 20 x 30-40 /i, sinuously and rugosely rough- ened ; spores variously and often polygonally rounded to ellipsoidal, minutely verruculose, 22-28 x 22-35 /z. Kadiak (Trelease, 634) ; Kukak Bay (Saunders, 636, on a leaf with Puccinia geranii-silvaticii). On leaves of Geranium erianthum. From A. geranii this differs in the color of the spots, the frequent thickening of the veins, fewer peridia neither regularly arranged nor with spreading border, and much larger spores. ^cidium asterum Schweinitz.* Kadiak (Trelease, 624, on Aster foliaceus), .fficidium parnassiae (Schlechtendal) Grav.* Kadiak (Trelease, 665, on Parnassia palustris). See, further, Puccinia caricis.
    digitised image 1
    digitised image 2
    digitised image 3