Coleosporium. 249 
young branches, producing fusiform swellings from the perennial 
mycelium. Pseudoperidia larger, crowded, whitish, saccate, 
mouth patent, widely torn, 5-6 mm. broad, 2°5-3 mm. high. 
Spores orange, spherical or ovate or angular, coarsely and 
thickly verrucose, 30-40 X 18-30p. 
Uredospores—Sori orange, small, scattered, soon pulverulent 
Spores in short chains, elliptical, ovate, or almost cylindrical, 
epispore densely verrucose, 20-30 X 1525p. 
Teleutospores—Sori at first orange, then forming red crusts. Spores 
cylindrical or clavate, consisting of about four superimposed 
cells, dark orange-red, go-110 X 17~-30p. 
Synonyms. 
Winter, Joc. cit, p. 248. Schrot., loc. a4., p. 367. 
Uredo farinosa, var. senecionis, Pers., “ Syn.,” p. 218. 
Aicidium pint, Pers. Berk., “Eng. Flor.,” vol. v. p. 374 
Grev., t. 7; “ Flor. Edin.,” p. 444. 
Peridermium pini, Chev. Cooke, “ Hdbk.,” p. 535; “Micro. 
Fungi,”. 4th edit., p. 191, t. ii. figs. 27, 28. 
Leridermium acicolum, Link. Cooke, “Micro. Fungi,” 4th 
edit., p. 191. 
Puccinia glomerata (uredospores). Cooke, ‘‘ Hdbk.,” p. 500. 
Credo senecionis, Schlecht. Berk., ‘‘ Eng. Flor.,” vol. v. p. 379. 
Grev., “Flor. Edin.,” p. 438. Johnst., “Flor. Berw.,” vol. i. 
p- 198. 
Trichobasis senectonis. Berk., “ Outl.,” p. 322. Cooke, “ Micro. 
Fungi,” 4th edit., t. vii. figs. 145, 146. 
Coleosporium senecionis, Fries. Cooke, “‘ Micro. Fungi,” 4th 
edit., p. 218, t. vii. figs, 145, 146. 
Lixsiccati. 
Cooke, i. 66; ii. 53. Vize, “ Micro. Fungi Brit.,” 20. 
4Ecidiospores on the leaves and on the young branches of 
Pinus sylvestris, austriaca, May and June. ; 
Uredospores and teleutospores on Senecio vulgaris, viscosus, 
sylvaticus, and jacobea, all the year, 
BIOoLoGy.—The connection between Coleosportum senecionis and 
Peridermium pini was first demonstrated by Wolff in 1872. He first 
