. The British rust fungi (Uredinales) their biology and classification. Rust fungi. ON UMBELLIFEBiE 197 69. Puccinia Smyrnii Corda. ^ddium Bunii var. Smyrnii-Olusatri DC. Flor. fr. vi. 96. Triohohasis Petroselini Berk. ; Cooke, Handb. p. 529 Puceinia Smyrnii Corda, Icon. iv. 18, f. 67 (1840). Cooke, Handb. p. 503 ; Micr. Fung. p. 209, pi. 3, f. 55—6. Plowr. Ured. p. 199. Saoc. SyU. vii. 670. P. Smyrnii-Olusatri Lindr. Faun, et Flor. fenn. xxii. no. 1, p. 9 (1902). Sydow, Monogr. i. 416. Spermogones. Epiphyllous, on sunken spots. jScidiospores. ^cidia hypophyllous or occasionally epi- phyl
. The British rust fungi (Uredinales) their biology and classification. Rust fungi. ON UMBELLIFEBiE 197 69. Puccinia Smyrnii Corda. ^ddium Bunii var. Smyrnii-Olusatri DC. Flor. fr. vi. 96. Triohohasis Petroselini Berk. ; Cooke, Handb. p. 529 Puceinia Smyrnii Corda, Icon. iv. 18, f. 67 (1840). Cooke, Handb. p. 503 ; Micr. Fung. p. 209, pi. 3, f. 55—6. Plowr. Ured. p. 199. Saoc. SyU. vii. 670. P. Smyrnii-Olusatri Lindr. Faun, et Flor. fenn. xxii. no. 1, p. 9 (1902). Sydow, Monogr. i. 416. Spermogones. Epiphyllous, on sunken spots. jScidiospores. ^cidia hypophyllous or occasionally epi- phyllous, in rather large irregular clusters, or on the petioles and stems in elongated groups, on yellow spots, hemispherical, yellow, opening by an irregular pore with a nearly entire margin; spores globose or ovate to fusiform or pyriform, delicately verruculose, yellowish, 16—40 x 16—20 /a. Teleutospores. Sori hypophyllous, on small yellow spots, scat- tered or a few together, minute, pulverulent, dark-brown; spores ellipsoid to oblong, rounded at both ends, not thickened above, hardly constricted, coarsely and remotely reticulate and tuber- culate, brown, 30—48 x 17— 26 fi; pedicels hyaline, thin, de- ciduous, up to 60/i long; epi- spore rather thick. ^.^ ^^^ ^ ^^^^^.. ^^^^^^^ „ „ . /-i7 , spores; «,, as really sculptured; On bmyrmum Uiusatrum. b, as seen when wet. Rather common near the coast. iEcidia, April—June; teleutospores, June—August. (Fig. 145.) The Eeoidia and teleuto-sori may occur on separate plants or on the same. The markings on the teleutospore form a wide-meshed network, which bears wart-like tubercles at the angles of the meshes. The secidio- spores bear more resemblance in form to uredospores than to what they really are ; but they are produced in chains with intercalary cells in the usual way : they are not eohinulate, but delicately verruculose ; the markings can easily be seen on an empty spore. The peridium-cells are grossly vernicose o
Size: 1745px × 1432px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublishercambr, bookyear1913
