. Cryptogamic plants of the USSR. (Flora sporovykh rastenii SSSR). Plants. 268. small swellings, with flat peridia and filaments penetrating upward and downward halfway through the spore mass (Per. stalactiforme); 3) eliciting large, round or ring-shaped swellings, peridia flattened with very short filaments, if at all (Per. harknessii). Aeciospores prismatic, obovoid-prismatic, or ellipsoid, 23 —35X 14 —24/u; wall colorless, 2 .5— 4)u thick, densely verrucose; on some spores smooth areas are noticed on one side, toward the base. Uredia hypophyllous and caulicolous, small, round; peridia openi
. Cryptogamic plants of the USSR. (Flora sporovykh rastenii SSSR). Plants. 268. small swellings, with flat peridia and filaments penetrating upward and downward halfway through the spore mass (Per. stalactiforme); 3) eliciting large, round or ring-shaped swellings, peridia flattened with very short filaments, if at all (Per. harknessii). Aeciospores prismatic, obovoid-prismatic, or ellipsoid, 23 —35X 14 —24/u; wall colorless, 2 .5— 4)u thick, densely verrucose; on some spores smooth areas are noticed on one side, toward the base. Uredia hypophyllous and caulicolous, small, round; peridia opening by a central pore. Urediospores globoid or broad-ellipsoid, 1 7— 27 X 14 —22/u; wall almost colorless, — thick, sparsely and finely aculeate (Figure 76). Telia hypophyllous cylindrical, short, — mm. Teliospores prismatic or fusiform, 30 —52X 12 —17jU, blunt at both ends; wall almost colorless, l/u thick, smooth. On species of Castilleja, Cordylanthus (Adenostegia), Orthocarpus, and Pedicularis of the family Scrophulariaceae in North America, from Alaska to Mexico in the west, and to the western corner of Nebraska in the east. Aecia on species of Pinus from the subgenus Diploxylon (sections Australes, Insignes, and Macrocarpae Shaw) in three different forms, all of which pass onto Castilleja. Some of them may pass directly onto pines, as already mentioned for Peridermium pini. In connection with the different aecial stages, this species may be considered as consisting of three varieties or species (see Arthur, Bull. Torrey Bot. Club, XLIX, 1922, p. 194). Not found in the USSR. The biology of the fungus was studied in detail by American scientists, particularly by Meineke. FIGURE 76. Cronartium coleosporioides (D. et H.) Arth. on Castilleja lati- folia H. et A. Uredio- spores, X 600. (Orig.) On Fagaceae (Quercus, Castanea) 6. Cronartium quercus (Brond.) Arth., N. Amer. Fl. VII, 1907, ; 1925, p. 691 (sub Cronartium quercus Schroet.); Tranz
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Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectplants
