. Cryptogamic plants of the USSR. (Flora sporovykh rastenii SSSR). Plants. FIGURE 55. Thekopsora areolata (Fr.) Magn. : 1 - urediospores on Padus racemosa (Lam.)Gilib., X 600(Orig.); 2 - cone with aecia on Picea vulgaris Link; 3 — scale of cone with aecia. (After Engler) 2—4 cells; walls light brown, darker and thickened above, up to 2 —3/u, with a pore in the inner corner (in relation to each spore) of each cell. Basidia up to 50/u long, 4ju thick. Basidiospores globoid, about 3/Lt across. Aecia on Picea. Uredio- and teliospores on Padus (Prunus). The fungus is wide- spread in the USSR. In Eu
. Cryptogamic plants of the USSR. (Flora sporovykh rastenii SSSR). Plants. FIGURE 55. Thekopsora areolata (Fr.) Magn. : 1 - urediospores on Padus racemosa (Lam.)Gilib., X 600(Orig.); 2 - cone with aecia on Picea vulgaris Link; 3 — scale of cone with aecia. (After Engler) 2—4 cells; walls light brown, darker and thickened above, up to 2 —3/u, with a pore in the inner corner (in relation to each spore) of each cell. Basidia up to 50/u long, 4ju thick. Basidiospores globoid, about 3/Lt across. Aecia on Picea. Uredio- and teliospores on Padus (Prunus). The fungus is wide- spread in the USSR. In Europe the fungus occasionally infects the American bird cherry, Padus serotina Ag. (= Prunus serotina Ehrh.), (L.) Mill., cherry, and mazzard. The fungus occurs in S Sakhalin on the local bird cherry, Padus (Prunus) Ssiori Fr. Schm., and also on the Japanese island of Hokkaido. The aecia open in the spring and the aeciospores infect the young leaves of bird cherry on which they produce uredia and, in fall, also telia. In the spring the teliospores germi- nate and the basidiospores infect young spruce cones; the mycelium spreads through the axis of the cone and of all scales, on the latter developing spermagonia in June and aecia in fall. Young leaf- bearing shoots have been successfully infected experimentally, whereupon in individual cases spermagonia and aecia also developed on them. General distribution: most of Europe and Asia (as far as Japan and Korea). On Picea excelsa Link - EUROPEAN PART: (Karelian ASSR), (Syktyvkar), (Leningrad Region), Bait. (Estonian SSR, Latvian SSR, Lithuanian SSR), U. V., , U. Dnp., U. Dns. On Picea obovata Ledeb.— EUROPEAN PART: (Molotov Region); W SIBERIA; E SIBERIA. On Picea jezoensis Carr. (= P. ajajiensis Fisch.) — FAR EAST: Kamch., Uss. (Maritime Territory). On Padus racemosa (Lam.) Gilib. incl. P. asiatica Kom. (= Pr\inus padus L.) — EUROPEAN PART: , , L
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Keywords: ., bookcentury1900, bookcollectionbiodiversity, booksubjectplants
