516 Arthur: New species of Uredineae 



Puccinia inflata sp. nov. 



O. Pycnia hypophyllous, crowded in orbicular groups, puncti- , 

 form, prominent, pale yellowish or brownish, subepidermal, irregu- 

 larly globoid, 100-120/i; sterigrnata large. 



II. Uredinia chiefly hypophyllous, scattered or gregarious, 

 roundish, small, 0.1-0.3 mm. across, soon naked, somewhat pul- 

 verulent, cinnamon-brown, ruptured epidermis inconspicuous ; 

 urediniospores broadly obovate or ellipsoid, 21-25 by 26-33 /i, 

 wall cinnamon-brown, medium thick, 1.5-2 /i, sparsely and 

 sharply echinulate ; pores 3 or 4, usually scattered, rarely 

 equatorial. 



III. Telia amphigenous, scattered or gregarious, roundish, small, 

 0.1-0.5 mm. across, soon naked, somewhat pulverulent, chocolate- 

 brown, ruptured epidermis slightly evident ; teliospores ellipsoid, 

 23-26 by 29-34 /i, rounded at both ends, slightly or not con- 

 stricted at septum, wall chocolate-brown, uniformly thick, 4-5 /*, 

 conspicuously reticulate, areolae 2-3 fi across ; pedicel often 

 attached more or less obliquely, colorless, once and a half to 

 twice length of spore, with globose enlargement near the spore, 

 which swells in water to 20-25 fi across. 



On Stigmatophyllon periplocifoliimi (Desf.) Juss., Baracoa, Cuba, 

 March 13, 1903, E. W. D. Holway (type) ; near Cayamas, Santa 

 Clara Province, Cuba, October 13, 1904, C. F. Baker 3538. 

 There is much similarity between this species and Puccinia Eclii- 

 nopteridis Holw. from Mexico. It has, however, smaller sori 

 throughout, with more ellipsoid and smaller teliospores borne on 

 longer and more slender pedicels. The surface-markings appear 

 to be the same in the two species. 



Puccinia Tridacis sp. nov. 



O. Pycnia wanting. 



III. Telia hypophyllous, numerous, small, 0.2-0.5 mm - across, 

 scattered, or often gregarious and confluent in circinating groups 

 2-5 mm. across, early naked, ruptured epidermis inconspicuous, 

 pulverulent, chestnut-brown; teliospores oblong or narrowly 

 oblong, rounded or obtuse at apex, obtuse or narrowed at base, 

 13-17 by 40-58 //, wall golden-brown, smooth, about 1 p, thicker 

 at apex, 6-10//, pedicel colorless, short, about one half length of 

 spore. 



