. Cryptogamic plants of the USSR. (Flora sporovykh rastenii SSSR). Plants. 318 Syn.: Uredo petasitis DC, Fl. franc^. II, 1805, p. 236. Coleosporium petasitis (petasitis) de Bary in lit. Peridermium Boudieri Ed. Fisch., Bull. Soc. bot. France, XLI, 1894, p. CLXXI. Peridermium Dietelii Wagn., Ztschr. Pflanzenkr. VI, 1896, S. 10. Biol. Fischer, 1. c, 1894; Entwicklungsgesch. Untersuch. iiber Rost- pilze, 1898, S. 105; Wagner, Ztschr. Pflanzenkr. VI, 1896, S. 10; Klebahn, Wirtswechs, Rostpilze, 1904, S. 364; Mayor, Bull. Soc. Neuchat. sci. natur. XLVIII, 1923, p. 386; LXIV, 1939, p. 16. i^-,. ^^^'
. Cryptogamic plants of the USSR. (Flora sporovykh rastenii SSSR). Plants. 318 Syn.: Uredo petasitis DC, Fl. franc^. II, 1805, p. 236. Coleosporium petasitis (petasitis) de Bary in lit. Peridermium Boudieri Ed. Fisch., Bull. Soc. bot. France, XLI, 1894, p. CLXXI. Peridermium Dietelii Wagn., Ztschr. Pflanzenkr. VI, 1896, S. 10. Biol. Fischer, 1. c, 1894; Entwicklungsgesch. Untersuch. iiber Rost- pilze, 1898, S. 105; Wagner, Ztschr. Pflanzenkr. VI, 1896, S. 10; Klebahn, Wirtswechs, Rostpilze, 1904, S. 364; Mayor, Bull. Soc. Neuchat. sci. natur. XLVIII, 1923, p. 386; LXIV, 1939, p. 16. i^-,. ^^^'. FIGURE 115. Coleosporium petasitis (DC) Lev. on Petasites tornentosus (Ehrh.) DC: 1 — uredlospores; 2 — teliospores; X 600. (Orig.) Spermagonia mainly epiphyllous, — long, — wide, 80 —100 m high. Aecia amphigenous, — long, — high. Aeciospores .globoid, ovoid, or ellipsoid, 21—38 X 18—28pt; walls colorless, 3—4/i thick, densely verrucose. Uredia hypophyllous, scattered or loosely grouped, small, — across, round, orange-colored. Urediospores ellipsoid or ovoid, 21—32 (42) X 14—21/x; walls about ^ thick, colorless, verrucose. Telia small, in small groups or extending over considerable areas, red. Teliospores cylindrical, 60 — lOOX 18—24/i; walls thickened at apex up to 17—20/Li (Figure 115). Aecia on Pinus silvestris L., also on P. montana Mill.; uredio- and teliospores on species of Petasites. The fungus is widespread in Europe (including the Caucasus) and Asia (West Siberia and Japan). On Petasites officinalis Moench. — EUROPEAN PART: Bait. (Lithuanian SSR); CAUCASUS: Cisc. (Ordzhonikidze Territory: Pyatigorsk), Dag. (Dagestan ASSR), E Transc. (Georgian SSR: Borzhomi). On Petasites tomentosus (Ehrh.) DC (= P. spurius Rchb.) — EUROPEAN PART: (Arkhangelsk Region: Dvina River in former Shenkursk 409. Please note that these images are extracted from scanned page images that may have been dig
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