140 NORTH AMERICAN FLORA (VoLuME 7 
spicuous ; teliospore-heads chestnut-brown, 5-8 cells across, 75-110 in diameter, smooth; 
cysts hyaline, globoid, pendent beneath entire head; pedicel short, deciduous. 
ON CAESALPINIACEAE : 
Cassia emarginata L., Porto Rico. 
Cassia sp., Jamaica. 
TYPE LOCALITY: Ponce, Porto Rico, on Cassia emarginaia. 
DISTRIBUTION : West Indies. 
23. Ravenelia Longiana Sydow, Hedwigia Beibl. 40: 128. 1901. 
QO. Pycnia unknown. 
II. Uredinia amphigenous, or at first hypophyllous, scattered, subcuticular, soon 
naked, pulverulent, cinnamon-brown, ruptured cuticle inconspicuous; paraphyses few, 
intermixed with the spores, colorless, cylindrical with very thick walls, or occasionally 
clavate with thinner-walled heads and solid stipes, 10-15 by 30-50; urediniospores ellip- 
soid or obovate-globoid, 15-25 by 18-304; wall medium thick, 2-2.5, cinnamon-brown, 
bluntly and rather sparsely echinulate, pores 6-8, scattered. 
III. Telia amphigenous, small, scattered, often confluent into large masses, blackish, 
shining, subcuticular, ruptured cuticle inconspicuous; paraphyses none; teliospore-heads 
chocolate-brown, 6-8 cells across, 75-100 # in diameter, smooth ; cysts globoid, 8-10, pendent 
from the base of the pedicel, slow to burst in water; pedicel colorless, short, deciduous. 
x 
ON CAESALPINIACEAE : 
Cassia Roemeriana Scheele, Texas. 
TYPE LOCALITY : Austin, Texas, on Cassia Roemeriana. 
DISTRIBUTION : Texas. 
ILLUSTRATION : Bot. Gaz. 35: pl. 2, f. 2. 
ExsiccaTI: Sydow, Ured. 1736. 
24. Ravenelia spinulosa Dietel & Holway, Bot. Gaz. 31: 336. 1901. 
QO. Pyenia unknown. 
JI. Uredinia amphigenous, numerous, round or irregular, 0.5-1 mm. across, often 
gregarious and confluent, subcuticular, rather tardily naked, cinnamon-brown, ruptured 
cuticle conspicuous; paraphyses intermixed with the spores, clavate-capitate or some cylin- 
rical, 10-15 by 30-50, colorless, wall of head thin, stipe usually solid, smooth; uredinio- 
spores broadly ellipsoid, 14-18 by 18-24; wall cinnamon-brown, 1.5-2 thick, low and 
sparsely echinulate, pores 8-10, scattered. 
III. Telia amphigenous, numerous, scattered, round or irregular, 0.5-1 mm. across, 
often confluent, subcuticular, soon naked, blackish-brown, shining, ruptured cuticle con- 
spicuous; teliospore-heads chestnut-brown, 7-9 cells across, 70-1204 in diameter, each 
spore with a long, semihyaline blunt tubercle, 5-8 4 long, 34» wide at base; cysts hyaline, 
globoid, pendent beneath entire head ; pedicel short, deciduous. 
On CAESALPINIACEAE : 
Cassia Galeottiana Martens, Puebla. 
Cassia Holwayana Rose (C. multiflora Mart. & Gal.), Morelos, Oaxaca. 
TYPE LOCALITY : Oaxaca, Mexico, on Cassia muiltifiora. 
DISTRIBUTION : Mexico. 
ILLUSTRATION : Bot. Gaz. 35: pl. 2, f. D5. 
25. Ravenelia papillifera Sydow, Ann. Myc. 1: 330. 1903. 
O. Pycnia unknown. 
Il. Uredinia amphigenous, scattered, round or irregular, 0.5-1 mm. across, subcutic- 
ular, soon naked, pulverulent, cinnamon-brown, ruptured cuticle noticeable; paraphyses 
few, intermixed with the spores, clavate or clavate-capitate, 8-15 by 25-40; wall color- 
less, thin, smooth; urediniospores broadly ellipsoid, 15-21 by 20-30”; wall cinnamon- 
brown, 2-2.5/ thick, low and sparsely echinulate, pores 6-10, scattered. 
III. Telia amphigenous, few, scattered, round or oblong, about 0.5 mm. across, sub- 
cuticular, early naked, chocolate-brown, shining, ruptured cuticle noticeable; teliospore- 
heads chestnut-brown, 5~7 cells across, 75-110 in diameter, each spore set with a single, 
wart-like, semihyaline papilla, 1-3 » long; cysts hyaline, numerous, pendent beneath entire 
head; pedicel short, hyaline, deciduous. 
