cen a at i —— - a = af 
i am U 
_ broadly ellipsoid or globoid, 18-23 x 24-27 #, 
ARTHUR: New UREDINEAE 587 
On Carex vulgaris Fries (C. Goodenovii J. Gay), Isle au Haut, 
Maine, September 25, 1899, /. C. Arthur (type); C. spectabilis 
Dewey, Glacier, British Columbia, August, 1907, &. W. D. Holway. 
Only one species of Puccinia on Carex possessing four equatorial 
pores in the urediniospores has heretofore been recognized from 
North America. That species, Puccinia minuta Diet., on C. ver- 
rucosa from Alabama, is easily distinguished by its much larger and 
more nearly globose urediniospores, and other less evident char- 
acters. The two widely separated stations indicate that it is not un- 
common in the northern regions, although little material is yet 
available for study. 
Puccinia minutissima sp. nov. 
O and I. Pycnia and aecia unknown. 
II. Uredinia hypophyllous, scattered, round or nearly so, 
0.2-0.3 mm. across, early naked, chestnut-brown, pulverulent, 
ruptured epidermis conspicuous ;_urediniospores globoid or broadly 
ellipsoid, very small, 13-16 x 16-20 4, wall chestnut-brown, 
medium thick, 1-1.5 p, finely echinulate, pores 2, in upper part, 
evident. : 
spores oblong-clavate, 15-22 x 42-644, slightly constricted at 
Septum, apex rounded or obtuse, narr 
chestnut-brown, concolorous, smooth, I-I. at sides, much 
thickened above, 9-13 #1; pedicel one fourth length of spore or 
less, firm, tinted. oe 
On Carex filiformis L., in sphagnum swamp, Lansing, Michi- 
gan, September 5, 1885, /. C. Arthur (type); ina sphagnum bog, 
London, Ontario, Canada, October, 1898, /. Dearness (Ellis & 
Ey, Fungi Columb. 73782) ; Kewanna, Indiana, October, 1893, L. 
M. Underwood (part of some specimens in Ellis & Ev. dees 
Columb. 258). The species is especially characterized by : e 
Unusually small urediniospores, but is also well marked in other 
respects. 
Prospodium bahamense sp. nov. 
O. Pycnia unknown. 
, : ‘ seen 
rediniospores intermixed with the teliospores, few , 
walls golden-brown, 
