. Cryptogamic plants of the USSR. (Flora sporovykh rastenii SSSR). Plants. Aecia mostly hypophyllous, solitary, also epiphyllous and caulicolous causing the appearance of yellow-bordered reddish spots. Aeciospores catenulate, mainly globoid or ovoid, 20—24fx across, up to 28p; long, delicately verruculose. Uredia usually hypophyllous, circular or elongate, early erumpent, occasionally in rings around the central pustule, orange-yellow. Paraphyses smooth, capitate. Urediospores globoid or ellipsoid, 13 —24 X 12 —20 ju ; wall colorless (or faintly stained), verrucose; pores inconspicuous. Telia
. Cryptogamic plants of the USSR. (Flora sporovykh rastenii SSSR). Plants. Aecia mostly hypophyllous, solitary, also epiphyllous and caulicolous causing the appearance of yellow-bordered reddish spots. Aeciospores catenulate, mainly globoid or ovoid, 20—24fx across, up to 28p; long, delicately verruculose. Uredia usually hypophyllous, circular or elongate, early erumpent, occasionally in rings around the central pustule, orange-yellow. Paraphyses smooth, capitate. Urediospores globoid or ellipsoid, 13 —24 X 12 —20 ju ; wall colorless (or faintly stained), verrucose; pores inconspicuous. Telia hypophyllous or amphigenous, rarely on stems, small, round or elongate, sometimes numerous, coalescing in large patches, yellowish- brown, later darker, brown to black. Teliospores single-celled, brown, cylindroid, prismatic or, when loose in structure, ellipsoid to ovoid, 18 — 30 to 65 ^ long, 7 — 12 to 22 M thick, with the wall sometimes thickened at the apex (see forms). (382). 10 r^r\^r\\ FIGURE 152. Melampsora euphorbiae (Schub.) Cast. Teliospores: 1 —on Euphorbia dendroides L.; 2 — on E. falcata L.; 3 — on E. gracilis Bess.; 4 — on dakhi Prokh.; 5 — on E. gerardiana Jacq.; 6 — on E. ispahanica Boiss.; 7 — on E. tiuczaninowii Kar. et Kir. (x 250-300, after ) 382 0, I,II, III — on numerous species of Euphorbia; in both hemispheres overwintering by teliospores. Breaks up in many forms adapted to individual sections or species of Euphorbia. According to Oliferenko, the individual forms produce a gradual series of teliospores, according to their size; from the cylindroid, elongate on E. dendroides, E. falcata and E. kopetdaghi Prokh. to ovoid on E. muricata M. B. and E. dulcis L. (Figures 152—154). The presence on the sanae host of forms distinctly different in their morphology reflects the wide amplitude of variability 5564 474. Please note that these images are extracted from scanned page images that may have been digitally en
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Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectplants
