Part 7, 1922] AECIDIACEAE 489 
13. Bullaria Hydrocotyles (Link) Arthur & Mains. 
Caeoma Hydrocotyles Link, in Willd. Sp. Pl. 62:22. 1825. 
Uredo Hydrocotyles Bertero; Mont. Ann. Sci. Nat. II. 3: 356. 1835. 
Trichobasis Hydrocotyles Cooke, Jour. Bot. 2: 343. 1864. 
Uredo bonariensis Speg. Anal. Soc. Ci. Argent. 9:171, 1880. 
Puccinia Hydrocotyles Cooke, Grevillea 9:14. 1880. 
Aecidiolum Hydrocotyles Speg. Anal. Soc. Ci. Argent. 12:80. 1881. 
O. Pycnia unknown. 
II. Uredinia amphigenous, chiefly epiphyllous, ntmerous, scattered or confluent in small 
groups, round or oval, 0.2-0.7 mm. across, rather early naked, pulverulent, cinnamon-brown, 
ruptured epidermis conspicuous; urediniospores globoid or broadly ellipsoid, 19-27 by 24-32 yu; 
wall cinnamon-brown, 1.5—-2.5 « thick, closely or moderately and sharply echinulate, the pores 
2, equatorial or slightly superequatorial. 
III. Telia amphigenous, rare, scattered, round, 0.3-0.8 mm. across, eatly naked, pul- 
verulent, chestnut-brown, surrounding epidermis noticeable; teliospores broadly ellipsoid or 
oblong, 19-26 by 30-42 », rounded at both ends, slightly constricted at septum; wall cinna- 
mon-brown, 2-3 y thick, not or only slightly thickened at apex, smooth, the pore of the upper 
cell at or slightly below apex, of the lower cell half way between septum and hilum; pedicel 
colorless, fragile, short, sometimes inserted laterally. 
On AMMIACEAE: 
Hydrocotyle australis Coult. & Rose, Cuba; Porto Rico. 
Hydrocotyle bonariensis lam., South Carolina; Mexico (state); Guatemala. 
Hydrocotyle Canbyi Coult. & Rose, Maryland. 
Hydrocotyle mexicana Cham. & Schlecht., Oaxaca; Costa Rica; Guatemala. 
Hydrocotyle prolifera Kellogg, Arizona, California. 
Hydrocotyle ranunculoides L.f., Nevada; Bermuda. 
Hydrocotyle umbellaia L., Alabama, Florida, Texas; Costa Rica; Porto Rico. 
Hydrocotyle verticillata Thunb., Louisiana, Mississippi, Nevada; Bermuda. 
Hydrocotyle sp., Morelos. . 
TYPE Locauity: Near Rio de Janeiro, Brazil, on Hydrocotyle sp. 
DISTRIBUTION: Maryland, Texas, and central California southward through Central America 
and the West Indies; Bermuda; also in Hawaii, New Zealand, South America, and Europe. 
ILLUSTRATIONS: Holway, N. Am. Ured. 1: $l. 37, f. 122a, b; Grove, Brit. Rust Fungi f. 130. 
Exsiceatt: Barth. N. Am. Ured. 548, 1764; Ellis, N. Am. Fungi 1482; Seym. & Earle, Econ. 
Fungi Suppl. Bi2. 
14. Bullaria Ziziae (Ellis & Ev.) Arth. Résult. Sci. Congr. 
Bot. Vienne 346. 1906. 
Puccinia Ziziae Ellis & Ev. Bull. Torrey Club 22:60. 1895. 
O. Pycnia unknown. 
II. Uredinia unknown; urediniospores present in the telia, ellipsoid, 22-27 by 30-35 p; 
wall light cinnamon-brown, 2-2.5 » thick, thickened at apex and often at base, 4-7 », moder- 
ately echinulate, the pores 3, approximately equatorial. 
III. Telia mostly epiphyllous, scattered, round or oval, 0.2—0.8 mm. across, early naked, 
becoming pulverulent, dark cinnamon- or chestnut-brown, ruptured epidermis evident; telio- 
spores somewhat irregularly oblong, oblong-clavate, or ellipsoid, 16-22 by 29-45 y, rounded 
above, rounded or somewhat narrowed below, slightly constricted at septum; wall cinnamon- 
brown, rather thin, 1-1.5 «, sometimes somewhat thickened at apex into a low papilla up 
to 3 u thick, smooth, or occasionally with a few irregular longitudinal ridges, the pore of the 
upper cell at apex, of the lower cell at or near septum; pedicel colorless, fragile, up to half 
length of spore. 
On AMMIACEAE: 
Zizia cordata Koch, Washington. 
Tyre Locality: Pullman, Washington, on Zizia cordata. 
DISTRIBUTION: Known only from the type locality. 
15. Bullaria Coelopleuri (Arth.) Arthur & Mains. 
Puccinia Coelopleuri Arth. Bull. Torrey Club 46: 116. 1919, 
O. Pycnia amphigenous or petiolicolous, crowded in groups 1-2 mm. in diameter, notice- 
able, chestnut- or chocolate-brown, globoid, 96-112 in diameter; ostiolar filaments not 
projecting much above the ostiole, 48-64 yu long. 
