Part 6, 1921] AECIDIACEAE 449 
On Fapaceaz: 
Trifolium repens L,., Colorado, New York, Wi in; i 
7 , : sconsin; Ontario. 
- ced eee ee Sata he Malar [probably Trifolium repens]. 
. : : Locally from the northeastern United St: i 
Wisconsin to the foothills of the Rocky Mountains: in eee as Peer cata eerie 
17. Pucciniola elegans (Berk.) Arthur. 
Aecidium Orobi elegans Berk. Grevillea 3:61. 1874; 
Uromyces elegans Lagerh. Tromsé Mus. Aarsh. 17: 34. 1895. 
Caeomurus elegans Kuntze, Rev. Gen. 33; 450, 1898. 
Uromycopsis elegans Arth. Résult. Sci. Congr. Bot. Vienne 345. 1906. 
O. Pycnia unknown. 
; I. Aecia hypophyllous, scattered evenly over large areas, short, cupulate, 0.2-0 3 mm. in 
diameter; peridium white, darkening with age to pale-brown, the margin somewhat recurved, 
finely erose; peridial cells rhomboidal, 12-13 by 19-24 u, slightly overlapping, often abutted, 
the outer wall rather thick, 5-9 », smooth and transversely striate, the inner wall thinner, 
3-5 uw, finely verrucose; aeciospores broadly ellipsoid, globoid, or somewhat angular, 10-19 
by 13-21 4; wall very light-yellow or colorless, 1-1.5 » thick, very finely and inconspicuously 
verrucose. 
III. Telia amphigenous and caulicolous, numerous, scattered or sometimes crowded in 
groups of two or three sori, oval or round; variable in size, 0.2~1. mm. in diameter, rather 
tardily naked, pulvinate, becoming pulverulent, chestnut-brown, ruptured epidermis con- 
spictous; teliospores broadly ellipsoid or obovate-ellipsoid, often angular, 15-19 by 19-27 u; 
wall cinnamon- or chestnut-brown, 1.5—-2 « thick, thicker at apex, about 2.5 », with a low, con- 
colorous papilla over the apical pore, sparsely and unevenly papillate-verrucose in faint longi- 
tudinal lines 5-7 » apart; pedicel colorless, up to 18 in length, usually collapsed, fragile, 
broad at point of attachment, 7-9 yw, tapering. 
ON FaBackEak: 
Trifolium arvense 1., Alabama, Mississippi. 
Trifolium cavolinianum Michx., Alabama, Florida, Georgia, Louisiana, Mississippi, South 
Carolina, Texas. 
Type Locality: South Carolina, on Trifolium carolinianum. 
DIsTRIBUTION: South Carolina southward to the Gulf and westward to Texas. 
Exsiccati: Rav. Fungi Am. 727; Seym. & Earle Econ. Fungi 508a, 6; Thiim. Myc. Univ. 1024. 
18. Pucciniola carnea (Nees) Arthur. 
Aecidium carneum Nees; Funck, Crypt. Gew. ea 25:4. 1818. 
Aecidium Astragali Thiim. Myc. Univ. 1117. 7 
Aecidium Astragali Eriksson, Fungi Paras. Scand. 285. 1888. 
Uromyces lapponicus Lagerh. Bot. Not. 1890: 274. 1890. 
Aecidium A stragali-alpini Eriksson, Bot. Not. 1891: 43. 1891. 
Uromyces carneus Hariot, Journ. de Bot. 7: 376, 1893. 
Uromyces splendens A. Blytt, Forh. Vid.-Selsk. Christ. 18966: 39. 1896. 
Uromycopsis lapponicus Arth. Résult. Sci. Congr. Bot. Vienne 345. 1906. 
O. Pyecnia hypophyllous and caulicolous, numerous, scattered over most of the leaf, 
conspicuous, globoid or flattened-globoid, 112-144 by 96-128 y; ostiolar filaments agglutinated 
into a column, up to 112 » long. 
I. Aecia hypophyllous or caulicolous, densely and usually evenly scattered, arising from 
a diffused mycelium, usually occupying all of the under surface of infected leaf, cupulate, 
0.5-0.8 mm. in diameter, 0.2-0.3 mm. high; peridium whitish or yellowish, the margin re- 
maining more or less incurved and covered by the epidermis, erose; peridial cells broadly ob- 
long or rhomboidal in radial section, 16-29 by 19-32 u, slightly overlapping or abutted, the 
12 4 thick, transversely striate, the inner wall 3-5 « thick, closely verrucose; 
outer wall 7— : 
y 16-26 w; wall colorless, thin, 1-1.5 y, 
aeciospores irregularly globoid or ellipsoid, 13-20 b 
closely and finely verrucose. 
Ill. Telia mostly hypophyllous, scattered, round or oval, 0.3-1 mm. across, early naked, 
somewhat pulverulent, dark cinnamon-brown, ruptured epidermis evident; teliospores broadly 
19-23 by 23-33 wu, rounded above and below; wall cinnamon-brown, 1.5-2 u 
ellipsoid or oblong, 
: 3-5 » thick, verrucose in a few 
thick, thickened into a small colorless papilla over the pore, 
irregular longitudinal lines 5-10 apart; pedicel colorless, fragile. 
