ARTHUR: NEW SPECIES OF UREDINEAE 3 
Puccinia Parnassiae sp. nov. 
III. Teleutosori amphigenous, somewhat gregarious, pustular, 
coalescing, soon naked, pulverulent, chocolate-brown, membra- 
nous epidermis conspicuous ; teleutospores elliptical, 16-20 by 30- 
37 4, rounded or obtuse at both ends; wall uniformly thin, 1-2 p», 
chestnut-brown, smooth or obscurely punctate above, sometimes 
with slight hyaline umbo at apex ; pedicel colorless, half the length 
of spore or less, appearing shorter by being partially deciduous. 
On Parnassia fimbriata Banks, Banff, Alberta, August 16, 
1902 (type), &. W. D. Holway. Also on same host at Silver Lake, 
Utah, 9,000 ft. alt., August 15, 1903, A. O. Garrett, no. 288. 
The species apparently possesses no uredo, as no trace of uredo- 
spores could be found even in the teleutosori. It may belong to 
the section Micropuccinia. A species of Uromyces occurs on 
Parnassia in Europe and a heteroecismal deczdium, but no Puc- 
cinia. The Uredo Parnassiae West. of Belgium, said to be on 
Parnassia palustris, is shown by Lagerheim to be an error for 
Uromyces Valerianae. 
Puccinia Sieversiae sp. nov. 
III. Teleutosori amphigenous, but more beneath, scattered, 
round or oval, at first bullate and covered by the thin epidermis, 
soon naked, pulverulent, chestnut-brown ; teleutospores elliptical 
or obovate-oblong, 20-26 by 32-40, rounded at both ends or 
somewhat narrowed below, slightly or not constricted at the sep- 
tum ; wall obscurely rugose, appearing smooth, cinnamon-brown, 
medium thick, 1.5-2.5 4, thicker above, 4-6, sometimes with 
semi-hyaline umbo; pedicel short, half length of spore or less, 
delicate, nearly colorless. 
On Steversia turbinata (Rydb.) Greene, Fish Lake, Uintah 
Mts., Utah, July 17, 1902, Leshe N. Goodding, no. 1377. The 
species is one of the very few belonging to this genus occurring 
upon the Rosaceae. 
Puccinia Bakeriana sp. nov. 
II. Uredosori hypophyllous, round, early naked, pulverulent, 
cinnamon-brown ; uredospores large, globose, or obovoid, 34—42 
by 39-45 4; wall light honey-yellow, thick, 4-6 at sides, 12 p 
at apex, closely and coarsely tuberculate, pores large, three, ap- 
proximately equatorial ; contents orange when fresh, segregated. 
III. Teleutosori hypophyllous, scattered, round, early naked, 
_ pulverulent, chocolate-brown ; teleutospores ellipsoid, sometimes 
