Part 6, 1921] AECIDIACEAE 477 
peridium cinnamon-brown; peridial cells light cinnamon-brown, narrowly rhomboidal, 7-10 
by 42-55 » in longitudinal section, overlapping, the wall 24 thick, very finely and closely 
verrucose; aeciospores irregularly and angularly globoid or oblong, 15-26 by 26-40 py; wall 
yellowish or pale golden-btrown, 1 » thick, thickened up to 7 » above, smooth below, rather 
coarsely and closely verrucose above. 
III. Telia mostly hypophyllous, arising from the veins and following the aecia on the same 
discolored areas, giving a dendritic appearance, oblong, 0.2-0.6 mm. across, early naked, promi- 
nent, chocolate-brown or blackish, ruptured epidermis inconspicuous; teliospores ellipsoid, 
23-26 by 32-40 uw, rounded above and below, slightly or not constricted at septum; wall dark 
chestnut-brown, uniformly 2.5-3 » thick, closely arid prominently verrucose; pedicel colorless, 
persistent, two to three times length of spore. 
On CARDUACEAE: 
Notopiera brevipes (B. L.. Robinson) Blake, Guatemala. 
TYPE LOCALITY: Guatemala City, Guatemala, on NV. otoplera brevipes. 
DISTRIBUTION: Guatemala, 
49. Allodus subcircinata (Ellis & Ev.) Arth. 
Résult. Sci. Congr. Vienne 345. 1906. 
Puccinia subcircinata Ellis & Ev. Jour. Myc. 3:56. 1887. 
O. Pycnia amphigenous, in small groups surrounded by the aecia, noticeable, conoidal; 
ostiolar filaments prominent. 
I. Aecia chiefly hypophyllous, in annular groups up to 7 mm. across, surrounding the 
pycnia, on conspicuous yellowish spots, or amphigenous, in loose groups, sometimes annular, 
rarely more than 4 mm. across, rarely occurring singly, 0.2-0.3 mm. in diameter, short, cupulate; 
peridium whitish, recurved, lacerate; peridial cells rhombic or rhomboidal, sometimes squarish, 
19-29 by 21-31 pn, the outer wall 5-7 « thick, striate, the inner wall 1.5-2.5 u thick, verrucose; 
aeciospores globoid, 16-19 by 17-21 u; wall colorless, 1~1.5 » thick, inconspicuously verrucose. 
III. Telia amphigenous, gregarious, arising around the aecia on yellowish-brown spots, 
or later independently, circular in outline, 0.2-0.6 mm. across, later becoming confluent to 
form large sori, somewhat pulvinate, very pulverulent, early naked, dark chestnut-brown, 
ruptured epidermis rather conspicuous; teliospores broadly ellipsoid, 15-21 by 25-32 u, usually 
rounded at both ends, moderately constricted at septum; wall light chestnut-brown, 1.5-2 u 
thick, smooth, sometimes 3 » thick above; pedicel colorless, fragile, rarely as long as spore. 
On CARDUACEAE: . 
Senecio columbianus Greene (S. atriapiculatus Rydb.), Washington. 
Senecio crassulus A. Gray, Colorado, Utah, Wyoming. 
?Senecto hydrophilus Nutt., Washington. 
?Senecio hydrophilus pacificus Greene, California. 
Senecio integerrimus Nutt., Nebraska. 
?Senecio lugens Richards., California. 
Senecio perplexus dispar A. Nelson (S. dispar A. Nelson), Utah. 
Senecio taraxacoides (A. Gray) Greene, Colorado. 
Senecio triangularis Hook., Idaho, Utah, Washington; Alberta. 
Senecio sp., New Mexico, South Dakota. . . : 
Tyre LOcALITY: Mt. Paddo, Washington, on Senecio triangularis. 
DISTRIBUTION: Nebraska to Alberta and southward to California. . ; 
Exsiccati: Barth. Fungi Columb. 4468; Barth. N. Am. Ured. 1371, 1372; Ellis & Ev. Fungi 
Columb. 1459; Ellis & Ev. N. Am. Fungi 1840; Garrett, Fungi Utah. 29, 106, 238; Sydow, Ured. 
782, 1943. 
34. KLEBAHNIA Arth. Résult. Sci. Congr. Bot. 
Vienne 345. 1906. 
Cycle of development includes pycnia, uredinia and telia, the alternating phases not 
marked; autoecious. Pycnia and other sori subepidermal. 
Pycnia deep-seated in the tissues of the host, globoid or flask-shaped, with protruding 
ostiolar filaments. 
Uredinia erumpent, definite, applanate or somewhat pulvinate, without paraphyses or 
peridium, in some species of two sorts, primary and secondary; the primary uredinia differ 
in appearance only slightly if at all from the secondary, the difference shown mostly in robust- 
