. The British rust fungi (Uredinales) their biology and classification. Rust fungi. 182 PUCCINIA Teleutospores. A. Fig. 130. P. HydrocotyUs. Teleutospore and uredospore. very few are found in the uredo-sori, ellipsoid to oblong, rounded at both ends, hardly thickened above, gently constricted, smooth, brown, 30—44 x 18 —28fi; pedicels hyaline, thin, deciduous. On Hydrocotyle vulgaris. Rare: Kew Gardens; Epping Forest; Ireland, Co. Dublin. Uredospores, July—Sep- tember; teleutospores, October. (Fig. 130.) This species ia very imperfectly known. The secidium is recorded only from South America ;
. The British rust fungi (Uredinales) their biology and classification. Rust fungi. 182 PUCCINIA Teleutospores. A. Fig. 130. P. HydrocotyUs. Teleutospore and uredospore. very few are found in the uredo-sori, ellipsoid to oblong, rounded at both ends, hardly thickened above, gently constricted, smooth, brown, 30—44 x 18 —28fi; pedicels hyaline, thin, deciduous. On Hydrocotyle vulgaris. Rare: Kew Gardens; Epping Forest; Ireland, Co. Dublin. Uredospores, July—Sep- tember; teleutospores, October. (Fig. 130.) This species ia very imperfectly known. The secidium is recorded only from South America ; in Europe the uredo-form alone has been observed, except for a few teleutospores in the uredo-sori. Lindroth describes the teleutospores (which are rare everywhere) as furnished with large isolated depressed and rounded warts, while those I have seen are perfectly smooth and with long and persistent pedicels. Cooke describes, both uredo- and smooth teleutospores, intermixed, on Hydrocotyle, from Natal (Grevillea ). Sydow states that the uredospores from all localities agree perfectly ; those that I have examined from the Hawaian Islands agree exactly with ours, having the same peculiar colour resembling a strong wash of "raw ; This species illustrates, in the Epping Forest locality, what can be frequently observed :—that, so long as the surroundings are undisturbed by man, many species of Fungi occur year after year continuously in the same spot. It is recorded as found there in 1863, 1864, 1871, 1882, and 1906, etc., and no doubt could have been found, or was found, there equally in all the intervening years. , Distribution: France, Holland, Italy, North and South America, Natal, Pacific Islands. 54. Puccinia Saniculs Grev. ./Scidium Saniculae Carm. in Cooke's Brit. iEcid., Journ. Bot. ii. 39, pi. 14, f. 1. Cooke, Handb. p. 543 ; Micr. Fung. p. 198. Puccinia Saniculae Grev. Fl. Edin. p. 431. Cooke, Handb. p. 502 ; Micr. Fung. p. 208. Plowr. Ured.
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