ARTHUR: NEW SPECIES OF UREDINEAE—XIV 195 . 
tardily naked, pulverulent, light-brown, ruptured the Oe 
evident; Ratan Wee Seti ellipsoid or obovoid, 18-23 23-32 wu; 
all light cinnamon-brown, 1.5-2 u thick, moderately ie ia 
fie pores 3 or 4, approximately equato 
On Sisyrinchium Bermudianum L. ein St. Davids, 
Bermuda, February 26—March 9, 1908, Stewardson Brown 611. 
A number of rusts have been described on Sisyrinchium, both 
from North and South America, but representatives of them are 
rare and scanty in herbaria. Judging from descriptions and 
the small amount of material available this form should be con- 
sidered distinct. 
Uredo cumula sp. nov. 
II. Uredinia amphigenous, somewhat aggregate or scattered, 
round, applanate, small, 0.1-0.4 mm. across, soon naked, pulveru- 
lent, cinnamon-brown, conspicuous, ruptured epidermis notice- 
On Buchnera elongata Sw. (Sora phadoriieandy Herradura, 
Cuba, March 24, 1921, John R. Johnston 2530. The species 
is notable for its small delicate spores, although when massed on 
the surface of the plant they are of ordinary conspicuousness. 
The generic name of the host is sometimes written Buechnera. 
Uredo curvata sp. nov. 
Fi Nr grts ae ee meen prdliped Doe ara: ¢ 
discolored areas 3-5 mm. across, round, small -O 
in diameter, soon naked, pubaerpleat, dark chestnut ieee 
ruptured epidermis spermine paraphyses numerous, per- 
i Bhaae cede d, hyphoid or somewhat See ge rete about 
7 by 30 uw, the wall thin, less than I yp, slightly thicker above, 
I-2 uw, colorless below, light chestnut-brown above, sometimes 
Nir strongly curv wall chestnut-brown, uniformly thin, 
I with one indistinct pore on the concave side below the 
eqnabie evenly echinulate-verrucose 
On Inga vera Willd. (Mimosaceae), San Diego de los Bajios, 
Cuba, March 26, 1921, John R. Johnston 2540. The species 
is remarkable for its very much curved spores with one pore on 
the indented side, being in this respect similar to the uredinia of 
Puccinia invaginata Arth., which occurs in Cuba on the rhamna- 
ceous genus Gouania. 
Aecidium Yuccae sp. nov. 
O. ia amphigenous, in small and crowded groups, 
inconspicuous, honey-yellow, subepidermal, small, globoid, 
