Parr 2, 1907] AECIDIACEAE 133 
across, tardily naked, cinnamon-brown, pulverulent, ruptured epidermis conspicuous ; 
paraphyses none; urediniospores obovate or globoid, 14-17 by 21-26 #; wall sparsely echinu- 
late-verrucose, pale-yellow, medium thick, 1.5-2 #, thicker above ,3-5 #, pores 3, equatorial. 
III. Telia unknown. 
ON MIMOSACEAE : 
Inga Inicuil Cham. & Schlecht., Veracruz. 
Inga vera Willd., Porto Rico. 
TYPE LOCALITY: Blumenau, Brazil, on Inga sp. 
DISTRIBUTION : West Indies and eastern Mexico; also in South America. 
2. Ravenelia Pithecolobii Arth. Bot. Gaz. 39: 394. 1905. 
O. Pycnia unknown. 
I. Uredinia amphigenous, small, rounded or oblong, 0.3-1 mm. across, subepidermal, 
tardily dehiscent, cinnamon-brown, long covered by the overarching and discolored epi- 
dermis; paraphyses none; urediniospores elliptical or broadly oval, 15-22 by 24-32 #2; wall 
golden-yellow, medium thick, 2-3 #, thicker at apex, 3-5 p, sparsely and papillosely 
echinulate, pores 4-6, equatorial. 
ITI. Telia amphigenous, scattered, small, round, at first bullate, subepidermal, tardily 
naked, chestnut-brown ; paraphyses none ; teliospore-heads chestnut-brown, 6-8 cells across, 
70-90 # in diameter, each spore bearing 2 or 3 slightly curved tubercles, 5-7 # long, acute, 
pale-brownish ; cysts appressed beneath the head, extending from periphery to pedicel, 
united laterally; pedicel colorless, short, deciduous. 
ON MIMOSACEAE : 
Pithecolobium dulce (Roxb.) Benth., Jalisco. 
Pithecolobium Unguis-Cati (1,.) Benth., Florida. 
TYPE LOCALITY: Guadalajara, Mexico, on Pithecolobium dulce. 
DISTRIBUTION: Southern Florida and central Mexico. 
3. Ravenelia Entadae Lagerh. & Dietel, Hedwigia 33: 62. 1894. 
O. Pycnia unknown. 
II. Uredinia chiefly epiphyllous, circinating or scattered, subepidermal, tardily naked, 
opening by a slit or pore, cinnamon-brown, ruptured epidermis conspicuous ; paraphyses 
none ; urediniospores broadly ellipsoid or slightly obovate, 10-16 by 14-19 #; wall medium 
thick, 1.5-2.5 , golden-brown, echinulate with short points, pores about 3, approximately 
equatorial. 
III. Telia epiphyllousin circinating groups, long covered by overarching and discolored 
epidermis, chestnut-brown ; teliospore-heads light chestnut-brown, flattened, smooth, 95- 
130 # broad, 7-10 cells across, easily separated by pressure, single spores 14-16» broad; 
cysts small, globose or ovate, often flattened by lateral pressure, of same number as the 
spores ; pedicel deciduous. 
ON MIMOSACEAE : 
Entada polystachya DC., Panama. 
TYPE LOCALITY: Panama, on Eniada polystachya. 
DISTRIBUTION: Known only from the type locality. 
ILLUSTRATION: Hedwigia 33: p1.2,f. 9. 
4, Ravenelia arizonica Ellis & Ev. Bull. Torrey Club 22: 363. 1895. 
O. Pycnia unknown. 
Il. Uredinia amphigenous, round, 0.5 mm. across, crowded over large areas, sometimes 
forming woody galls, subepidermal, early naked, pulverulent, cinnamon-brown, ruptured 
epidermis conspicuous; paraphyses plentifully intermixed with the spores, capitate, rarely 
spatulate, 18-22 by 40-60, heads chestnut-brown, thick-walled, stipe nearly or quite 
colorless and solid; urediniospores fusiform-oval, 16-22 by 28-42; wall cinnamon-brown, 
darker above, thick, 2-3, thicker at apex, 3-6 4, echinulate-verrucose, pores 4, equatorial. 
III. Telia amphigenous, round, 0.5-1 mm. across, scattered, subepidermal, chocolate- 
brown, shining, ruptured epidermis evident ; paraphyses as in the uredinia but less abun- 
dant ; teliospore-heads chocolate-brown, 6-8 cells across, 60-100 in diameter, each spore 
bearing a central spine, 4-6 long, tapering to a blunt point, curved, pale-brown ; cysts 
pendent, not much united to one another, peripheral ; pedicel colorless, short, deciduous. 
