Part 2, 1907] AECIDIACEAE 141 
Own CAESALPINIACEAE : 
Cassia angustisiliqua Lam., New Providence. 
Cassia Lindheimeriana Scheele, Texas. 
TYPE LOCALITY : Austin, Texas, on Cassia Lindheimeriana. 
DISTRIBUTION : Texas; Bahamas. . 
ExsiccaTi: Sydow, Ured. 1737. 
26. Ravenelia inconspicua Arth. Bot. Gaz. 39: 395. 1905. 
O. Pycnia unknown. 
II. Uredinia hypophylious, round, small, 0.5 mm. or less across, subcuticular, soon 
naked, pulverulent, cinnamon-brown, ruptured cuticle inconspicuous; paraphyses abun- 
dantly intermixed with the spores, clavate or somewhat spatulate, smooth, cinnamon- 
brown, paler below, walls thick, 3-6 #, stipe solid; urediniospores globose or broadly 
elliptical, 15-20 by 15-22; wall medium thick, 2-2.5, golden-yellow, closely verrucose, 
pores about 10, scattered. 
III. Telia hypophylious, very small, scattered, blackish, shining, subcuticular, ruptured 
cuticle inconspicuous; paraphyses none; teliospore-heads chestnut-brown, 6-8 cells across, 
60-100 # in diameter, each cell bearing 4-6 cylindrical tubercles, 3 wide by 5-7 long, 
slightly colored; cysts pendent, appressed to the underside of the head, 6-10, slightly 
united with one another. 
On CAESALPINIACEAE: 
Caesalpinia or Cassta sp., Jalisco. 
TYPE LOCALITY: Zapotlan, Jalisco, Mexico, on Cassta (or Caesalpinia) sp. 
DISTRIBUTION : Known only from the type locality. 
27. Ravenelia Humphreyana P. Henn. Hedwigia 37: 278. 1898. 
Ravenelia pulcherrima Arth. Bot. Gaz. 39: 395. 1905. 
O. Pycnia unknown. 
II. Uredinia amphigenous, scattered, round, 0.5 mm. or less across, subcuticular, 
early naked, light cinnamon-brown, ruptured cuticle noticeable; paraphyses numerous, 
intermixed with the spores, capitate or clavate-capitate, 10-15 by 30-55, wall much 
thickened above, up to 15, thin below, 1-2 4, heads chestnut-brown, stipe hyaline; 
urediniospores globoid, 13-18 by 15-204; wall cinnamon-brown, thin, about 1 4, finely 
echinulate-verrucose, pores 6-8, scattered. 
III. Telia amphigenous, small, scattered, or confluent, subcuticular, soon naked, 
chocolate-brown, ruptured cuticle noticeable ; paraphyses lacking; teliospore-heads chest- 
nut-brown, 5-7 cells across, 60-120 in diameter, appearing smooth, but each spore set with 
3-8 inconspicuous wart-like papillae; cysts hyaline, ovoid, appressed, extending from 
pedicel to periphery; pedicel short, deciduous. 
a Deane pul bern L. (Caesalpinia pulcherrima Sw.), Guerrero, Morelos ; Guatemala ; 
Cuba ; Jamaica. 
TYPE LOCALITY : Kingston, Jamaica, on “ Cassia sp.’’, error for Poinciana pulcherrima, 
DISTRIBUTION : West Indies, Mexico and Central America. 
28. Ravenelia Caesalpiniae Arth. Bull. Torrey Club 31: 5. 1904. 
O. Pyenia chiefly epiphyllous, arising beneath the cuticle, crowded in small groups, 
depressed, 15-18 » high by 60-100 # broad, golden-yellow, becoming brownish. 
Il. Uredinia chiefly hypophyllous, arising beneath the cuticle, at first in small groups 
circinating about the pycnia, finally irregularly scattered, roundish or oblong, at first 
yellowish, afterward ochraceous, ruptured cuticle noticeable ; paraphyses of the periphery 
clavate, nearly colorless, wall uniformly thin, 1-1.5 4, paraphyses intermixed with the 
spores numerous, capitate, slightly tinted above, head globose with very thick wail, pedicel 
solid; urediniospores obovate to obovate-cuneate, 16-23 by 28-35 #; wall thin, 1.5-2 #4, some- 
times slightly thicker above, 1.5-3 4, chestnut-brown, often paler and almost hyaline below, 
nearly or entirely smooth above, prominently and evenly echinulate below, pores 4, super- 
equatorial. 
III. Teliospores unknown. 
