. Cryptogamic plants of the USSR. (Flora sporovykh rastenii SSSR). Plants. 198 9. Uredinopsis ossiformis Kamei (sub U. ossaeiformis). Trans. Sapporo Nat. Hist. Soc. XII, 1932, p. 167; Hirats., Monogr. Pucciniastreae, 1936, p. 80; Faull, Contr. Arn. Arb. XI, 1938, p. 62, tab. Ill, fig. 15, a, b; Tranzschel, Consp. Ured. URSS, Moscow, 1939, p. 62, 68. Biol. Kamei,!. c, 1932. Spermagonia hypophyllous, on leaves of current year, few, initially inconspicuous, later turning brown on yellowed areas, scattered subepider- mally, deeply immersed, subgloboid, large, 1 54—270)u across, 110 —241^t high. Sp
. Cryptogamic plants of the USSR. (Flora sporovykh rastenii SSSR). Plants. 198 9. Uredinopsis ossiformis Kamei (sub U. ossaeiformis). Trans. Sapporo Nat. Hist. Soc. XII, 1932, p. 167; Hirats., Monogr. Pucciniastreae, 1936, p. 80; Faull, Contr. Arn. Arb. XI, 1938, p. 62, tab. Ill, fig. 15, a, b; Tranzschel, Consp. Ured. URSS, Moscow, 1939, p. 62, 68. Biol. Kamei,!. c, 1932. Spermagonia hypophyllous, on leaves of current year, few, initially inconspicuous, later turning brown on yellowed areas, scattered subepider- mally, deeply immersed, subgloboid, large, 1 54—270)u across, 110 —241^t high. Spermatia ellipsoid to prismiatic, — X —^. Aecia on leaves of current season, amphigenous, mostly hypophyllous, — across, up to 1mm high; inner wall of peridium 3 —5;u thick, densely and finely verrucose, the verrucules mostly in short linear rows; outer wall smooth, about 1^^ thick. Aeciospores ellipsoid to subgloboid, 21— X 16 —2 5 ju (frequently, 22 X 18/u); wall colorless, 1—2/u thick, finely verrucose except for a small smooth area; contents hyaline. Uredia hypophyllous on yellowish patches, round, — mm in diameter, covered by hemispherical delicate peridium. Urediospores broadly wedge- shaped, at times abruptly widened at the apex, "bone-shaped," at other times angular, truncated at the apex or slightly rounded, occasionally subgloboid, — 43 X — (usually — 16)1/) (according to our measurements, 20 — 40 X 12—18ju); spore wall colorless, thick, at the apical corners 3/j thick, contents hyaline (Figure 2 9). Teliospores connivent, subepidermal, amphi- genous, mostly hypophyllous, sometimes deeply sunk in the parenchyma, intercellular, globoid to ellipsoid, longitudinally septate, 2- to 6-celled, mostly 4-celled, according to our measurements, 20 — 32 X —23/Li, according to other data 17-31 X 15-27/Lt; spore wall colorless, smooth, thin. Basidiospores subgloboid, —
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