124 NORTH AMERICAN FLORA {[Vo1lumME 7 
Telia erumpent, at first arising from bed of uredinia, definite, waxy, about as high as 
broad. Teliospores catenulate, one-celled, oblong or cuboid; wall nearly or quite colorless, 
thin, smooth. 
Type species, Cerotelium Canavaliae Arth. (on Canavalia ensiformis). 
1. Cerotelium Canavaliae Arth. Bull. Torrey Club 33: 30. 1906. 
II. Uredinia hypophyllous, gregarious on reddish-brown spots, crowded, small, 
0.1-0.2 mm. across, bullate, ruptured epidermis inconspicuous, centrally dehiscent; peridium 
delicate, cells polygonal, inner walls slightly if any thicker than outer walls; uredinio- 
spores broadly ellipsoid or globoid, 18-23 by 26-34; wall medium thick, 1-2, pale yel- 
lowish, sparsely and minutely echinulate, pores obscure. 
III. Telia hypophyllous, columns scarcely extending beyond the peridial walls, about 
as long as broad ; teliospores cylindrical or polygonal, small, 6-9 by 13-17 «; wall smooth, 
thin, 0.5-0.8 4, colorless. 
ON FABACEAE: 
Canavalia ensiformis DC., Porto Rico. 
TYPE LOCALITY: Mayaguez, Porto Rico, on Canavalia ensiformis. 
DISTRIBUTION: Known only from the type locality. 
14. CIONOTHRIX Arthur, gen. nov. 
Cycle of development includes only pycnia and telia, both subepidermal. 
Pycnia deep-seated, flask-shaped, with ostiolar filaments. 
Telia erumpent, the catenulate spores adhering to form a filiform column, horny when 
dry. Teliospores ovoid, one-celled; wall slightly colored, thin, smooth. 
Type species, Cronartium praclongum Wint. (on an undetermined composite). 
1. Cionothrix praelonga (Wint.) Arthur. 
Cronartium praelongum Wint. Hedwigia 26: 24. 1887. 
O. Pycnia epiphyllous, in small groups of two to six, punctiform, honey-yellow fading 
to whitish, conspicuous, subepidermal, deep-seated, flask-shaped, 90-110» across; ostiolar 
filaments numerous, up to 65“ long. 
III. Telia hypophyllous, crowded in small groups, 1-2 mm. across, on yellow spots ; 
telial column arising from a deep-seated bulbous base, filiform, slender, 2-3 mm. long, 
50-75 u thick, flexuous, pale yellowish ; teliospores ovoid, 20-24 by 29-35; wall uniformly 
thin, 1, nearly colorless, smooth; basidiospores oval, 6-9 by 8-14“, minutely and sparsely 
granulose. 
ON CARDUACEAE : 
Eupatorium populifolium H.B.K., Guatemala. 
Eupatorium sp., Veracruz. 
TYPE LOCALITY : Sao Francisco, Prov. St. Catharina, Brazil, on an undetermined composite. 
DISTRIBUTION : Southern Mexico and southward ; also in South America. 
15. ALVEOLARIA Lagerh. Ber. Deuts. Bot. Ges. 9: 346. 1891. 
Cycle of development includes telia, and possibly pycnia. Telia subepidermal. 
Pycnia unknown, possibly not formed. 
Telia erumpent, round, the adherent spores forming an extruded column. Peridium 
wanting. Teliospores ovoid or prismatic, one-celled, forming detachable, transverse layers ; 
wall colored, rather thin, smooth. 
Type species, Alveolaria Cordiae Lagerh. (on Cordia sp.). 
1. Alveolaria Cordiae Lagerh. Ber. Deuts. Bot. Ges. 9: 346. 1891. 
O. Pycnia unknown, probably wanting. 
III. Telia hypophyllous, in circinating groups, 1-5 mm. across, germinating upon ma- 
turity ; telial column cylindrical, 0.01-0.5 mm. long, 100-1504 thick, yellowish fading to 
whitish ; teliospores in layers of 30-60 each, prismatic, 16-20 by 30-48 “, somewhat rounded 
at both ends; wall smooth, uniformly thick, 1.5-2 4, pale golden-yellow. 
