ON LEGUMINOS.K 101 



belong to U. Pisi has been proved by Jordi to be confined to that species 

 and not to be transmissible to Pisum sativum or Lathyrus. It has been 

 named by Magnus U. Fischeri-Edv&rdi, but is not known as British. 



Distribution : Europe generally ; North America less 

 commonly. 



15. Uromyces Phaseolorum De Bary. 



sEcidium Phaseolorum Wall. Fl. Crypt. Germ. ii. 256. 



Credo appendiculata var. Phaseoli Pers. Syn. p. 222. 



Uromyces Phaseolorum De Bary, Ann. Sci. Nat. ser. 4, xx. 80 (1863). 

 Cooke, Grevillea, vii. 135. 



U. Phaseoli Wint. Pilze, p. 157 (1884). Plowr. tired, p. 122. York- 

 shire Fung. Fl. p. 186. 



U. appendiculatus Link, Obs. ii. 28. Sacc. Syll. vii. 535. Sydow, 

 Monogr. ii. 120. Fischer, Ured. Schweiz, p. 19, f. 16. McAlpine, 

 Rusts of Australia, p. 92, f. 306 (all pro parte). 



Nigredo appendiculata Arthur, N. Amer. Fl. vii. 257 p.p. 



[Spermogones. In little clusters, whitish, then yellowish. 



^■Ecidiospores. iEcidia hypophyllous, clustered in little 

 roundish groups 2 — 3 mm. wide on yellowish or brownish spots, 

 cup-shaped, whitish, with a torn revolute margin ; spores poly- 

 gonal or oblong, densely and minutely verruculose, colourless, 

 18—36 x 16—24 /x.] 



Uredospores. Sori generally hypophyllous, on indistinct 

 spots, scattered or in little clusters here 

 and there, minute, soon naked, surrounded 

 by the cleft epidermis, cinnamon ; spores 

 subglobose to ovate, distantly but sharply 

 echinulate, brownish-yellow, 18 — 28 x IN 

 — 22 fx ; epispore brownish-yellow, about 

 1 \ fi thick, with two germ-pores ; contents Fig gg v PJuueolorum . 

 colourless. Teleutospore and ure- 



Teleutospores. Sori similar, but con- 

 fluent, larger, amphigenous and blackish-brown ; spores sub- 

 globose to ovate, rounded above, with a wide germ-pore and a 

 hemispherical hyaline papilla, smooth or rarely provided, espe- 

 cially near the apex, with a few hyaline warts, chestnut-brown, 

 24 — 35 x 18 — 25 /jl; epispore up to 3^ fi thick; pedicels hyaline, 

 rather thin, about as long as the spore. 



