. The British rust fungi (Uredinales), their biology and classification. Uredineae. 196 PUCCINIA Semadeni showed that the spores from A. siloestris infected M. odorata readily (Centralbl. f. Bakt. pt. 2, xiii. 217—9), but whether the form on C. temulum belongs to the same species (or is a biological race of it) seems at present to be undetermined. Distribution : Central and Northern Europe, Siberia. 68. Puccinia Conii Fckl. Uj'edo Conii Strauss in Wetter. Ann. ii. 96. Trichohasis Conii Cooke, Micr. Fung. p. 225. T. Umhellatariun Lev. ; Cooke, Micr. Fung. p. 225 Puccinia Conii Fckl. Syrab.
. The British rust fungi (Uredinales), their biology and classification. Uredineae. 196 PUCCINIA Semadeni showed that the spores from A. siloestris infected M. odorata readily (Centralbl. f. Bakt. pt. 2, xiii. 217—9), but whether the form on C. temulum belongs to the same species (or is a biological race of it) seems at present to be undetermined. Distribution : Central and Northern Europe, Siberia. 68. Puccinia Conii Fckl. Uj'edo Conii Strauss in Wetter. Ann. ii. 96. Trichohasis Conii Cooke, Micr. Fung. p. 225. T. Umhellatariun Lev. ; Cooke, Micr. Fung. p. 225 Puccinia Conii Fckl. Syrab. Myc. p. 53. Cooke, Handb. ]j. 209 Sacc. Syll. xiv. 302. Sydow, Monogr. i. 375. Fischer, Ured. Schweiz, p. 114, f. 87. P. hullaria Link ; Cooke, Handb. p. 503 P. huUata Wint. ; Plowr. Ured. p. 183 Uredospores. Sori hypophyllous, occasionally on the petioles, scattered, minute, rarely confluent, pul- verulent, cinnamon; spores ellipsoitl to obovate, thickened (up to 7 //.) above and echinulate in the upper part only, pale-brownish, 24—36 x 17—26 yu, with three germ-pores. Teleutospores. Sori similar, but blackish-brown, on the stems and petioles often larger and long covered by the grey epidermis; spores ovate or ovate- oblong or even clavate, rounded at both ends or attenuated below, not thickened at the apex but with a small papilla or pore-cap, hardly constricted, nearly or quite smooth, pale-brown, 30—48 x 20—28 yu,; pedicels hyaline, short, deciduous. On Conium maculatum. Not common; England, Wales, Ireland (Clare Island). August, September. (Fig. 144.) Distinguished by the uredospores, which are echinulate only in the upper half; the spines gradually diminish in size downwards and the lower half is quite smooth. The teleutospores which I have examined are quite smooth when empty, even under the highest power, but the protoplasm is very granular and presents a misleading effect at first Fig. 114. P. Te leutospore and uredospore. Plea
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