440 NORTH AMERICAN FLORA [VorumE 7 
I. Aecia amphigenous, crowded in small groups, 2-3 mm. in diameter, cupulate, 0.2-0.3 
mm. in diameter; peridium white or slightly yellowish, fragile: peridial cells oblong or comma- 
form in radial longitudinal section, 13-22 by 26-44 u, considerably overlapping through a 
long slender downward projection, the outer wall thin, 1.5-2 4, smooth, the inner wall thick, 
4-9 u, closely and finely verrucose; aeciospores broadly ellipsoid or oblong, 16-19 by 21-26 wu; 
wall slightly tinted, thin, 1 p, very finely and closely verrucose. 
II. Uredinia hypophyilous, scattered or in small groups, round or oval, 0.2-1 mm. across, 
more or less covered by the ruptured epidermis, pulverulent, cinnamon-brown, ruptured epi- 
dermis conspicuous; urediniospores broadly ellipsoid, 19-25 by 23-29 u; wall light cinnamon- 
brown, moderately thick, 1.5~2 p, moderately and finely echinulate, the pores 3-4, equatorial 
or approximately so. 
III. Telia hypophyllous or caulicolous, scattered or circinating about the uredinia, round 
or oval, 0.3-1 mm. across on the leaves, linear, 0.5-7 mm. long on the stems, sometimes re- 
maining somewhat covered by the epidermis, pulverulent, dark chocolate-brown, ruptured 
epidermis evident; teliospores broadly ellipsoid or oblong, 19~28 by 29-42 yu, rounded above 
and below, somewhat constricted at septum; wall chestnut-brown, 1.5-2.5 u thick, slightly 
thickened over pores, 3~4 4, very closely and finely verrucose, often appearing smooth, the 
pore of the upper cell variable, of the lower usually in the upper half of the cell, sometimes 
below; pedicel colorless, fragile. 
On CICHORIACEAE: 
Crepis barbigera Leib., Washington. 
Crepis denticulata Rydb., Colorado. 
Crepis glauca (Nutt.) T. & G., Utah. 
Crepis intermedia A. Gray, Idaho, Oregon. 
Crepis occidentalis Nutt., Montana. 
Crepis runcinata (James) T. & G., Colorado. 
TYPE LOcALIty: Kaiserjoch near Pettneu, Northern Tyrol, on Crepis montana. 
Disrrisution: Rocky mountains from Colorado northward into Canada; also in Europe. 
ILLUSTRATIONS: Beitr. Krypt. Schweiz 22: f, 165; Zeits. Pflanzenkr. 9: 278, f. 3a, b, d 
Exsiccati: Barth. Fungi Columb. 4459; Clements, Crypt. Form. Colo. 135. 
DOUBTFUL SPECIES 
Dicazoma Campu.osi (Thiim.) Kuntze, Rev. Gen. 33: 468. 1898. (Puccinia Campulosi 
Thiim. Bull. Torrey Club 6: 215. 1878.) On Campulosus monostachyae Beauv. “ America 
septentr.; sine loco. Ex. herb. Dr. C. Keck.’’ This species has not been reported by any 
other person and the material from which the description was drawn has been destroyed by 
fire. A search in the phanerogamic collections at the New York Botanical Garden, Academy 
of Sciences at Philadelphia, National Herbarium at Washington, and Field Museum at Chicago, 
on the host named, has failed to reveal any rust. The description given by von Thiimen is 
too meager to fully establish the species as wholly distinct. 
32. PUCCINIOLA Marchand, Bijdr. Nat. Wet. 4:47. 1829. 
Uromyces § Uromycopsis Schroet. Abh. Schles. Ges. 48:11. 1869. 
Uromycopsis Arth. Résult. Sci. Congr. Bot. Vienne 345. 1906. 
Cycle of development includes pycnia, aecia, and telia; autoecious. Pycnia and other 
sori subepidermal. 
Pycnia immersed in the host tissues, usually globoid or flask-shaped, with protruding osti- 
olar filaments. 
Aecia erumpent, cupulate or cylindric. Peridium usually firm, dehiscent at apex and the 
margins more or less reflexed. Aeciospores catenulate, globoid or ellipsoid; walls nearly or 
quite colorless, verrucose. 
Telia frequently first arise closely about the aecia, or even within the aecial cups, replacing 
the aeciospores, afterward independently. Teliospores one-celled; wall colored, or in some 
species colorless, smooth or sculptured, with one apical pore. 
Type species, Uredo Behenis DC. (on Silene inflata). 
Aecia and telia inhabiting monocotyledonous hosts. 
Host belonging to family Alliaceae. 
Teliospores small, 20-28 yu long. | : 
Teliospore-wall smooth; pedicel concolorous. 1. P. Brodiaeae. 
Teliospore-wall rugose; pedicel hyaline. ; 2. P. primaverilis. 
Teliospores larger, 26-39 « long, with hyaline pedicel. 3. P. aurea. 
