462 NORTH AMERICAN FLORA [VoLuME 7 
On AMMIACEAE: 
Arracacia multifida S. Wats., Hidalgo, Mexico (state). 
TYPE LOCALITY: Rio Hondo, Mexico, on Arracacia multi fida. 
DistTripuTion: South-central Mexico. 
ILLusTRaTIon: Holway, N. Am. Ured. 1: pl. 39, f. 128. 
Exsiccati: Barth. N. Am. Ured. 1903; Ellis & Ev. Fungi Columb. 2060. 
16. Allodus microica (Ellis) Orton, Mem. N. Y. 
Bot. Gard. 6: 192. 1916, 
Puccinia microica Eliis, Jour. Myc. 7: 274. 1893. 
Dicaeoma microicum Kuntze, Rev. Gen. 33: 469. 1898. 
O. Pycnia not seen. 
I. Aecia hypophyllous, gregarious, in roundish or oval groups 1-3 mm. across, cylindric, 
0.2-0.3 mm. in diameter; peridium colorless, the margin lacerate, recurved; peridial cells rhom- 
boidal in longitudinal section, 15-18 by 27-29 n, the outer wall 7-9 u, finely striate, the inner 
wall 3-4 u, conspicuously verrucose; aeciospores globoid or angular, 14-19 » in diameter; wall 
colorless, 1-1.5 « thick, minutely verrucose. 
III. Telia chiefly hypophyllous or caulicolous, crowded, first formed in and about the aecia, 
bullate, 0.2-0.3 mm. in diameter, later arising independently and dehiscing by a central pore, 
frequently in circular groups 1~4 mm. across, in larger groups when cattlicolous, pulverulent 
when mature, cinnamon-brown; teliospores usually terete, narrowed at both ends, 13-19 by 
27-42 yw, very slightly constricted at septum; wall cinnamon-brown, smooth, about 2 yz thick, 
with hyaline papilla, 5-7 » thick above; pedicel colorless, fragile, rarely as long as spore. 
On AMMIACEAE: 
Deringa canadensis (L.) Kuntze (Cryptotaenia canadensis DC.), District of Columbia, Iowa, 
Maryland. . 
TypE Locality: Garrett Park, Maryland, on “ Sanicula?,” error for Devinga canadensis. 
DIstRIBUTION: Locally in northern Iowa and on the Potomac river. 
Inwusrration: Holway, N. Am. Ured. 1: pl. 39, f. 131. 
17. Allodus Erigeniae Orton, Mem. N. Y. Bot. 
Gard. 6:191. 1916. 
O. Pycnia amphigenous, caulicolous, among the aecia in groups 0.5~1 mm. across, low- 
conoidal, 100-130 w in diameter by 45-65 yw high; ostiolar filaments compact, up to 35 u long. 
J. Aecia amphigenous, caulicolous, gregarious or scattered, in irregular groups on leaves 
and stems rarely up to 5 mm. long, cupulate or short-cylindric, 0.2-0.4 mm. in diameter; peri- 
dium colorless, the margin incurved; peridial cells rhomboidal in longitudinal section, 21-23 
by 29-45 », the outer wall very finely striate, 5—7 » thick, the inner wall evenly and promi- 
nently fimbriate-verrucose, 5—7 » thick; aeciospores globoid or broadly ellipsoid, 16-21 by 
19-26 uw; wall colorless, 1-1.5 » thick, finely verrucose. 
III. Telia chiefly hypophyllous, caulicolous, scattered, roundish or oval, 0.3-1 mm. long, 
rather early naked, ruptured epidermis conspicuous, pulverulent, dark cinnamon-brown; 
teliospores broadly ellipsoid or oblong, 20-24 by 29-394, slightly constricted at septum, 
usually rounded at both ends; wall cinnamon-brown, uniformly 1.5-2 4 thick, finely and 
inconspicuously verrucose; pedicel colorless, short, fragile. 
On AMMIACEAE: 
Erigenia bulbosa (Michx.) Nutt., Ohio; Ontario. 
Type Locality: London, Ontario, on Erigenia bulbosa. 
DisTRiBuTION: Region adjoining north and south shore of Lake Erie. 
ILLUSTRATION: Holway, N. Am. Ured. 1: ol. 38, f. 125¢. 
Exsiccatt: Ellis, N. Am. Fungi 1040b. 
18. Allodus asperior (Ellis & Ev.) Orton, Mem. 
N. Y. Bot. Gard. 6: 193. 1916. 
Puccinia asperior Ellis & Ev. Bull. Washburn Lab. Nat. Hist. 1:3, 1884. 
Dicaeoma asperius Kuntze, Rev. Gen. 33: 468. 1898. 
Puccinia oregonensis Farle, Bull. N. VY. Bot. Gard. 2: 349. 1902. | 
Allodus oregonensis Arth. Résult. Sci. Congr. Bot. Vienne 345. 1906. 
QO. Pycnia chiefly epiphyllous and caulicolous, gregarious, in small groups 1-2 mm. across 
on leaves, on stems in larger groups, sometimes 15 mm. long, flattened, honey-yellow, 100—- 
145 » in diameter by 65-80 uv high; ostiolar filaments 25-30 u long. 
