Heteropiiccinia. 175 



Urcdospores — Sori oval or linear, generally surrounded by a red 

 margin, long covered by the epidermis, yellow. Spores orange, 

 spherical, elliptical, or ovate, echinulate, 19-26 x 17-20/x,. 



Teleutospores — Sori elliptical or elongate, pulvinate. Spores 

 oblong, clavate, apex rounded, truncate or conical, thickened 

 (5-9/x.), base attenuated, somewhat constricted in the middle, 

 brown, smooth, 30-45 X 14-20/^. Pedicels rather long, per- 

 sistent. Mesospores clavate, pretty abundant. 



Synonyms. 



Puccinia obscura. Schrot. in Nuov. Gior/i. Bot. Hal., vol. ix. 

 p. 256. " Krypt. Flor.," vol. iii. p. 330. V\o\\., Jour. Linn. Soc. 

 Bot., vol. XX. pp. 511, 512. 



yEcidhun conipositannn, Mart., var. hcUidis, D. C. Cooke, 



"Hdbk.,"p. 543- 



Exsiccati. 



Berk., 225. Cooke, i. 327; ii. 90; " L. F.," 57. Vize, 

 " Micro. Fungi," 156. 



.-Ecidiospores on Bellis perennis, October to December. 

 Uredospores and teleutospores, on Luzula canipcstris, L., June 

 to November. 



Biology. — The teleutospores are not formed until August or 

 September, and germinate after a very short period of rest. The life- 

 history wa5 first worked out in November, 1883, and June, 1884. 

 Further cultures were made in 1887. 



Puccinia phragmitis. (Schum.) 



yEcidiospores — Pseudoperidia on circular red spots ("5 to i"5 cm. 

 in diameter), shallow, edges white, torn. Spores white, sub- 

 globose, echinulate, 15-26/x in diameter. 



Uredospores — Sori rather large, dark brown, elliptical, pulverulent, 

 without paraphyses. Spores ovate or elliptical, echinulate, 

 brown, 25-35 X 15-23/^- 



Teleutospores — Sori large, long, sooty black, thick, often confluent. 

 Spores elliptical, rounded at both ends, markedly constricted 

 in the middle, dark blackish brown, smooth, 45-65 X 16-2 5/^1. 

 Pedicels very long, 150-200 x 5-8/x, yellowish, firmly attached. 



