534 NORTH AMERICAN FLORA [VoLuME 7 
form, honey-yellow, globose, 100-150 » in diameter; ogtiolar filaments delicate, agglutinate 
into a column, 30-80 u long. 
III. Telia amphigenous, chiefly hypophylious, small, round, 0.3-0.5 mm. across, closely 
gregarious, covering large areas, at first pulvinate, early naked,:chestnut-brown, becoming 
pulverulent, ruptured epidermis conspictious; teliospores ellipsoid, oblong, or oblong-ovate, 
22-28 by 35-45 », rounded or obtuse above, rounded or more commonly narrowed below, 
not or slightly constricted at septum; wall moderately thick, 2-3.5 », chestnut-brown, thick- 
ened above, 7-10 », obscurely verrucose-rugose, appearing smooth when wet; pedicel color- 
less, short, usually deciduous; mesospores and three-celled teliospores occur. 
On BRASSICACEAE: 
Smelowskia americana Rydb. (S. calycina Am. Auth.), Colorado, Montana, Utah. 
Smelowskia lobata Rydb., Nevada. 
TYPE LocaLiry: Alta, Wasatch Mountains, Utah, on Smelowskia calycina. 
DisTRIBUTION: Central Colorado to Nevada, northward to northern Montana. 
ILLUSTRATION: Holway, N. Am. Ured. 1: pl. 17, f. 65. 
Exsiccati: Garrett, Fungi Utah. 52; Rab.-Wint. Fungi Eur. 3505. 
27. Micropuccinia Rydbergii (Garrett) Arthur & Jackson. 
Puccinia Rydbergit Garrett, Mycologia 6: 251. 1914. 
O. Pycnia unknown. 
III. Telia amphigenous, scattered or crowded in small groups, round or elliptic, 0.2-1.2 
mm. across, rather tardily naked, pulverulent, bullate, dark cinnamon-brown, ruptured 
epidermis conspictious; teliospores ellipsoid, 16-20 by 26-32 4, rounded above and below, 
or slightly narrowed below, slightly constricted at septum; wall cinnamon-brown, rather 
thick, 1.5-2.5 », sometimes somewhat thickened at apex, 3-4 yu, very closely and finely ver- 
rucose, the pore of upper cell apical, of lower cell in lower half of cell; pedicel colorless, fragile, 
short. 
ON CRASSULACEAE: 
Gormania debilis (S. Wats.) Britton (Sedum debile S. Wats.), Utah. 
Sedum stenopetalum Pursh, Utah; British Columbia. 
TYPE LOCALITY: Mountains above Gold Basin, LaSal Mountains, San Juan County, Utah, on 
Sedum stenopetalum. 
DISTRIBUTION: Mountains of Utah and British Columbia. 
Exsiccati: Garrett, Fungi Utah. 220. 
28. Micropuccinia Rhodiolae (Berk. & Br.) Arthur & Jackson. 
Puccinia Rhodiolae Berk. & Br. Ann. Mag. Nat. Hist. II. 5: 462. 1850. 
Puccinia Rhodiolae A. Blytt, Forh. Vid.-Selsk. Christ. 18825: 10. 1882. 
Puccinia Blyitii De-Toni, in Sacc. Syll. Fung. 7: 700. 1888. 
Dicaeoma Blyttit Kuntze, Rev. Gen. 33: 468. 1898. 
Dicaeoma Rhodiolae Kuntze, Rev. Gen. 33: 470, 1898. 
O. Pycnia unknown. ; 
III. Telia amphigenous, crowded in groups 5-10 mm. across, round or oblong, 0.2-0.7 
mm. in diameter, early naked, pulverulent, cinnamon-brown, ruptured epidermis conspicuous; 
teliospores broadly ellipsoid, 20~26 by 28-32 u, rounded above and below, not constricted 
at septum; wall cinnamon-brown, 1.5~2,y thick, slightly thickened over the pores into a 
light-colored papilla, up to 3 4, smooth or occasionally with a few irregular lines of verrucose 
markings, the pore of upper cell apical, of lower cell near pedicel; pedicel colorless, short, 
fragile. 
On CRASSULACEAE: 
Rhodiola integrifolia Raf. (Sedum Rhodiola Coult. not DC.), Colorado. 
Type Locatity: Glen Callater, Scotland, on Sedum Rhodiola. 
DistRIBuTION: Central Colorado; also in northern Europe. 
ILLUSTRATIONS: Holway, N. Am. Ured. 1: pl. 23, f. 80; Grove, Brit. Rust Fungi f. 157. 
Exsiccati: Clements, Crypt. Form. Colo. 575. 
29. ['Micropuccinia laurentiana (Trel.) Arthur & Jackson. 
Puccinia lourentiana Trel. Harriman Alaska Exp. Crypt. 38. 1904. 
O. Pyecnia unknown. 
III. Telia hypophyllous, round, about 1 mm. in diameter, pulverulent, chestnut-brown; 
