Parr 8, 1922] AECIDIACEAE 603 
39. Puccinia jaliscana Arth. Bot. Gaz. 40: 202. 1905. 
II. Uredinia hypophyllous, round, very smail, 0.1-0.3 mm. in diameter, soon naked, 
pale-yellowish, somewhat pulverulent, ruptured epidermis scarcely noticeable; uredinio- 
spores globoid or broadly ellipsoid, 18-24 by 20-26 u; wall pale cinnamou-brown or nearly. 
colorless, rather thin, 1.5—-2 #, very finely and closely verrucose-echinulate, the pores obscure, 
apparently 6-8, scattered. 
III. Telia amphigenous, chiefly hypophyllous, round, small, 0.2-0.5 mm. in diameter, 
early naked, blackish, somewhat pulverulent, ruptured epidermis not conspicuous; teliospores 
ellipsoid, 20-24 by 30-40 #, tounded at both ends, slightly constricted at septum, semi-opaque; 
wall chocolate-brown, 2.5-3 # thick, thicker above, 4-6 4, prominently and closely verrucose; 
pedicel colorless, firm, once to twice length of spore. 
On CaRDUACEAE: 
Porophyllum Holwayanum Greenman, Jalisco. 
& LOCALITY: Sayula, Mexico, on Porophyllum Holwayanum. 
Distrisution: Known only from the type locality. 
40. Puccinia Eriophylli H. S. Jackson, Brooklyn Bot. Gard. Mem. 
1: 246. 1918, 
Uredo abdita H.S. Jackson, Mycologia 14: 120. 1922. 
If. Uredinia amphigenous and caulicolous, scattered, small, rounded, 0.3-0.6 mm. across, 
early naked, pulverulent, pulvinate, chestnut-brown, ruptured epidermis conspicuous; ure- 
diniospores ‘globoid, obovoid, or oblong, 21-27 by 26-29 y; wall chestnut-brown, 2-3 y thick, 
moderately and finely echinulate, the pores 2, approximately equatorial. 
III. Telia amphigenous, scattered, small, round, 0.3-0.6 mm. across, early naked, compact, 
pulvinate, blackish-brown, ruptured epidermis inconspicuous; teliospores ellipsoid or oblong, 
18-21 by 26-30 u, rounded at both ends, not constricted at septum; wall chestnut-brown, 
2-2.5 » thick, uniform, minutely and obscurely verrucose; pedicel colorless, deciduous. 
On CaRDUACEAB: 
Eriophyllum lanatum (Pursh) Forbes, Oregon. 
Eriophyllum leucophyllum (DC.) Rydb., Oregon. 
Eriophyllum Nevinit A. Gray, California. 
Eriophyllum staechadifolium Lag., California. 
Eriophyllum trifidum (Nutt.) Rydb. (E. confertifolium trifidum A. Gray), California. 
TYPE LOCALITY: Wren, Benton County, Oregon, on Eriophyllum lanatum. 
DistRisvuTIon: Northern Oregon to southern California. 
41. Puccinia arnicalis Peck, Bot. Gaz. 6: 227. 1881. 
Dicaeoma arnicale Kuntze, Rev. Gen. 3°: 467. 1898. 
II. Uredinia amphigenous, chiefly epiphyllous, scattered or gregarious, sometimes con- 
fluent, round or oval, 0.2-0.5 mm. across, early naked, cinnamon-brown, ruptured epidermis 
conspicuous; urediniospores globoid or ellipsoid, flattened laterally, when viewed with pores 
in face-view, 20-26 by 26-32 u, when pores in side-view, 16-18 by 26-32 u; wall light chestnut- 
brown, moderately thick, 1.5-2 4, very minutely and closely echinulate, appearing nearly 
smooth when wet, the pores 2, opposite and considerably superequatorial. 
III. Telia at first epiphyllous, becoming amphigenous, in open and irregular groups 
2-5 mm. across, or extending for considerable distances along petioles or midribs, often scat- 
tered, round, 0.4—-0.8 mm. in diameter, early naked, becoming pulverulent, chestnut-brown, 
ruptured epidermis inconspicuous; teliospores ellipsoid or obovate-ellipsoid, 18-26 by 28-38 u, 
rounded above, rounded or narrowed below, slightly or not constricted at septum; wall light 
chestnut-brown, uniformly thin, 1-2 4, minutely and closely verrucose, the pore of upper cell 
often depressed half way to septum, the pore of lower cell usually about half way between 
septum and pedicel; pedicel colorless, very short, deciduous. 
On CARDUACHAE: 
Arnica cordifolia Hook., Colorado, Oregon, Utah. 
