Part 6, 1921] AECIDIACEAE 445 
fluent in groups of considerable size up to 2 mm. across, roundish or irregularly bullate, 
0.2-0.8 mm. across, for a time covered by the gray epidermis, finally pulverulent, chocolate- 
brown, ruptured epidermis evident; teliospores oval or obovate-oblong, 19-26 by 24-35 yn, 
rounded or obtuse at both ends or narrowed below; wall chestnut-brown, rather thick, 2-3 », 
somewhat thicker above, 3~5 u, closely and evenly verrucose, more strongly toward apex, the 
inarkings arranged in longitudinal rows giving a striate appearance; pedicel colorless, delicate, 
evanescent, except for a small portion next to spore. 
ON PoRTULACACEAE: 
Calyptridium roseum S. Wats., Oregon. 
Calyptridium umbellatum Greene (Spraguea umbellata Torr.), California. 
Spraguea multiceps Howell, Oregon, Wyoming. . 
TYPE LocaLity: Sierra Nevada, California, 2100 meters altitude, on Spraguea umbellaia. 
DistRIBuTION: Eastern Oregon to western Wyoming, and southward to central California. 
Exsiccat1: Barth. N. Am. Ured. 1297; Ellis & Ev. N. Am. Fungi 1870; Rab.-Wint. Fungi 
Eur. 3309; Rab.-Wint.-Paz. Fungi Eur. 3933. 
10. Pucciniola unita (Peck) Arthur. 
Uromyces unitus Peck, Bull. Torrey Club. 10:74. 1883. 
Caeomurus unitus Kuntze, Rev. Gen. 33: 451. 1898. 
Uromycopsis unita Arth. Résult. Sci. Congr. Bot. Vienne 345. 1906. 
O. Pycnia unknown. 
I. Aecia amphigenous, in extended groups, crowded, short, cylindric, 0.2-0.3 mm. in 
diameter; peridium pale-yellow or colorless, delicate, the margin erect, entire or erose; peridial 
cells oblong in radial section, 19-29 by 23-34 p, overlapping, the outer wall of considerable 
thickness, 9-13 u, smooth, transversely striate, the inner wall thinner, 3-7 u, strongly verru- 
cose; aeciospores globoid, angularly globoid or irregular, 13-18 by 16-25 u; wall colorless or 
occasionally very pale-yellow, of uniform thickness, 1.5—2 4, very minutely verrucose, appearing 
almost smooth when wet. 
III. Telia amphigenous, numerous, at first intermixed with the aecia, often crowded in 
groups of considerable size, appearing almost confluent, round, 0.2-0.6 mm. in diameter, 
early naked, pulverulent, blackish-brown, ruptured epidermis noticeable; teliospores globoid or 
quite broadly ellipsoid, 21-30 by 23-32 », rounded above and below; wall chocolate-brown, 
thick, 3-4 u, thickened at apex into a slightly lighter umbo, 5-9 », very minutely’ verrucose, 
sometimes appearing almost smooth when wet; pedicel shorter than spore, nearly colorless. 
On PoRTULACACEAE: 
Lewisia columbiana (Howell) B. L. Robinson (Calandrinia columbiana Howell), Washington. 
Lewisia rediviva Pursh, Montana. 
Tyre LOCALITY: Washington, on ‘““Calandrinia Leana,”’ error for C. columbiana. 
DISTRIBUTION: Western Montana and one station in Washington. 
Exsticcati: Barth. N. Am. Ured. 1100; Ellis & Ev. Fungi Columb. 1373; Ellis & Ev. N. Am. 
Fungi 2407. 
11. Pucciniola Jonesii (Peck) Arthur. 
Uromyces Jonesii Peck, Bot. Gaz. 7:45. 1882. : 
Caeomurus Jonesii Kuntze, Rev. Gen. 33: 450. 1898. 
Uromycopsis Jonesii Arth. Résult. Sci. Congr. Bot. Vienne 345. 1906. 
QO. Pycnia hypophyllous, numerous, scattered among the aecia, small, punctiform, 
noticeable, honey-yellow becoming darker, globoid, 55-130 » wide by 55-115 » in depth; ostio- 
lar filaments agglutinated to form a column 50-65 » in diameter and 65-70 u» high. 
J. Aecia mainly hypophyllous, from a diffused mycelium, often completely covering the 
under surface of the leaf, cupulate, low, 0.1-0.3 mm. in diameter; peridium pale-yellow, the 
margin recurved, lacerate; peridial cells oblong, rather small, 15-16 by 19-23 », somewhat 
overlapping, the outer wall 3-5 4, smooth, the inner wall thinner, 1-2 u, finely and closely verru- 
cose; aeciospores angularly globoid, 16-23 by 21-26 »; wall pale-yellow or colorless, 1-1.5 4 
thick, finely and inconspicuously verrucose, appearing almost smooth when wet. 
Ill. Telia amphigenous, rather numerous, scattered, round, 0.1-0.7 mm. in diameter, 
long covered by the epidermis, pulvinate becoming pulverulent, reddish-brown, ruptured 
epidermis conspicuots; teliospores broadly ellipsoid, globoid or obovoid, 19-26 by 24-35 u, 
rounded above, rounded or tapering below; wall cinnamon-brown, 1.5-2.5 » thick, uniform, 
moderately and strongly verrucose, appearing warty; pedicel hyaline, short, fragile. 
