Part 6, 1921] AECIDIACEAE 447 
BS LOcALIty: [Salt Lake City], Utah, on Psoralea lanceolata. 
reer eee ae Southwestern South Dakota to Idaho and southward to Colorado and Utah, 
. xsiccatr: Barth. Fungi Columb. 2295, 4995; Barth. N. Am. Ured. 2198; Clements, Crypt. 
orm. Colo. 315; Ellis & Ev. Fungi Columb. 2106; Garrett, Fungi Utah. 248; Sydow. Ured. 2107, 
14. Pucciniola Argophyllae (Seym.) Arthur. 
Aecidium Psoraleae Peck; Parry, Am. Nat. 8: 215. 1874. Not (U; 
Uromyces Argophyllae Seym. Proc. Bost. Soc. Nat. Hist. 24: 185. ; 1889. eee ce ca 
Caeomurus Argophyllae Kuntze, Rev. Gen. 33: 449. 1898. 
oO. Pycnia hypophyllous, very abundant, scattered among the aecia or preceding them, 
large, papilliform, immersed or somewhat raised above the surface, quite conspicuous, honey- 
yellow, becoming darker, globoid, 120-145 » in diameter; ostiolar filaments agglutinated into 
acolumn 80-100 » high. 
; I. Aecia hypophyllous, very numerous, evenly scattered over large areas or sometimes 
slightly crowded, cupulate, low, 0.2-0.4 mm. in diameter; peridium pale-yellow, the margin 
quite strongly recurved, deeply lacerate; peridial cells in radial section rectangular or square, 
15-21 by 19-26 u, overlapping, the outer wall 5-9 uw thick, smooth, the inner wall thinner, 3-5 p, 
rather closely verrucose; aeciospores angularly globoid, 15-23 by 18-24 wu; wall colorless, 1.5-2 « 
thick, uniform, finely and inconspicuously verrucose. 
III. Telia amphigenous, quite numerous, scattered, round, small, 0.1-0.3 mm. in diameter, 
often inconspicuous, rather early naked, pulverulent, chestnut-brown, ruptured epidermis 
evident; teliospores oblong or fusiform-oblong, 13-21 by 26-39 », acute or sometimes rounded 
above, rounded or acute below; wall light cinnamon- or golden-brown, 1.5—-2 thick, thicker 
at apex, 2-3 », with a low semi-hyaline papilla over the pore, smooth; pedicel hyaline, short, 
caducous. 
On Fapackaz: 
Pediomelum cuspidatum (Pursh) Rydb. (Psoralea cuspidata Pursh), Colorado, South Dakota. 
Pediomelum mephiticum (S. Wats.) Rydb. (Psoralea mephitica S. Wats.), Colorado. 
Psoralidium argophyllum (Pursh) Rydb. (Psoralea argophylla Pursh), Iowa, Kansas, Minne- 
sota, Nebraska, North Dakota, South Dakota. 
Psoralidium Bigelovii Rydb. (Psoralea obtusiloba Vail, not T. & G.), Arizona. 
Psoralidium collinum Rydb. (Psoralea collina Rydb.), Nebraska. 
Psoralidium floribundum (Nutt.) Rydb. (Psoralea floribunda Nutt.), Colorado, Hlinois, 
Kansas, Montana, Texas. 
Psoralidium linearifolium (T. & G.) Rydb. (Psoralea linearifolia T. &7G.), South Dakota. 
Psoralidtum tenuiflorum (Pursh) Rydb. (Psoralea tenuiflora Pursh), Arizona, Colorado, 
Illinois, Kansas, Montana, Nebraska, Wyoming. 
Type Locality: Valley City, [North] Dakota, on Psoralea argophylla. 
DistRrBuTION: Minnesota to Illinois and Texas, and westward to the eastern Rocky Mountain 
states. 
Exsiccati: Barth, Fungi Columb. 2396, 2094, 3595, 4895; Barth. N. Am. Ured. 101, 205, 800, 
994, 1097, 1895; Brenckle, Fungi Dak. 3, 73; Clements, Crypt. Form. Colo. 315; Ellis & Ev. N. Am, 
Fungi 1818, 1862; Ellis & Ev. Fungi. Columb. 60, 557, 1596, 1803, 1909; D. Griff. W. Am. Fungi 
67, 189, 258; Sydow, Ured. Exot. 328. 
15. Pucciniola oblonga (Vize) Arthur. 
Uromyces oblongus Vize, Grevillea 5: 110. 1877. 
Uromyces minor Schroet. Krypt. Fl. Schles 31: 310. 1887. 
Caeomurus minor Kuntze, Rev. Gen. 33: 450. 1898. 
Caeomurus oblongus Kuntze, Rev. Gen. 33: 450. 1898. 
Uromycopsis minor Arth. Résult. Sci. Congr. Bot. Vienne 345. 1906. 
O. Pyenia unknown. 
I. Aecia mostly hypophyllous, scattered unevenly over the surface of the leaf, often in 
groups, 0.4-2.5 mm. across, cupulate, low, 0.1-0.4 mm. in diameter; peridium pale, the margin 
somewhat revolute, finely erose; peridial cells in radial section square or oblong, 15—21 by 16— 
24 pw, abutted or overlapping only moderately, the outer wall 6-8 « thick, smooth, transversely 
striate, the inner wall thinner, 3-5 4, moderately verrucose; aeciospores angular-globoid, ob- 
long, or ellipsoid, 12-16 by 13-19 yn; wall pale-yellow or colorless, thin, 1-1.5 u, minutely verru- 
cose, appearing smooth when wet. 
III. Telia mostly hypophyllous and caulicolous, following closely upon the appearance of 
the aecia and usually intermixed with them, large, bullate, elongate in the direction of the 
veins of the leaf, 0.2-2 mm. in length, long covered with the gray epidermis, finally pulveru- 
lent, chestnut-brown, ruptured epidermis conspicuous; teliospores angular-globoid, broadly 
