Parr 2, 1907] AECIDIACEAE 145 
III. Telia amphigenous and caulicolous, at first arising in a circle about the uredinia, 
small, coalescing into large areas, on the stem forming fusiform swellings several centi- 
meters jong, subepidermal, chocolate-brown or blackish, shining, ruptured epidermis 
inconspicuous ; paraphyses few or none; teliospore-heads chestnut-brown, 4-6 cells across, 
70-120 # in diameter, each spore bearing 4-8 prominent tubercles, 3 by 4-7, straight, pale- 
brown ; cysts large, delicate, reaching from the pedicel to the periphery; pedicel color- 
less, slender, short, deciduous. 
ON FABACEAE : 
Indigofera Antl\,., Cuba; Jamaica; Bermuda. 
Indigofera Conzattit Rose, Oaxaca. 
Indigofera cuernavacana Rose, Morelos. 
Indigofera Palmeri S. Wats., Jalisco. 
TYPE LOCALITY: Near Guadalajara, Mexico, on ‘‘Jndigofera Palmeri,” error for I. Conzattii. 
DISTRIBUTION : West Indies and southern Mexico; also in South America. 
ILLUSTRATION : Bot. Gaz. 35: 1.3, f. 19. 
38. Ravenelia appendiculata Lagerh. & Dietel; Dietel, 
Hedwigia 33: 47. 1894. 
O. Pycnia unknown. ‘ 
II. Uredinia hypophyllous, small, round, subepidermal, soon naked, pulverulent, cin- 
namon-brown, ruptured epidermis conspicuous; paraphyses numerous, intermixed with 
the spores, clavate, smooth, cinnamon-brown above, very pale below, 12-18 by 30~75 4, 
longest ones at side of sorus, walls thin below, lv, very thick at apex, 15-25; uredinio- 
spores ellipsoid, 15-19 by 24-30; wall pale-yellow, often nearly colorless, thin, 1-1.5 4, 
evenly and sparsely verrucose, pores 4, equatorial. 
III. Telia hypophyllous, small, round, subepidermal, blackish, shining; teliospore- 
heads irregular, chestnut-brown, 4-6 cells across, 50-110 in diameter, each spore bearing 
an upright, cylindrical projection, pale-fulvous, 3-5 thick, 10-154 long, with a flattened 
branched apex; cysts few, beneath the head and decurrent into the pedicel, united later- 
ally ; pedicel colorless, 30-60 long, deciduous. 
On EUPHORBIACEAE : 
Phyllanthus Galeottianus Baill., Jalisco, Morelos. 
TYPE LOCALITY: Puente de Chimbo, Ecuador, on Phyllanthus sp. 
DISTRIBUTION: Southern Mexico; also in South America. 
ILLUSTRATIONS: Hedwigia 33: pl. 4, f. 18; Bot. Gaz. 35: fl. 2, f.8; Beih. Bot. Centr. 20?: 
pl. 6, f. 22, 
4. DENDROECIA Arth. Résult. Sci. Congr. Bot. Vienne 340. 1906. 
Cycle of development includes pycnia and telia, both either subcuticular or subepi- 
dermal. 
Pycnia depressed-conical. 
Telia erumpent, definite. ‘Teliospores fascicled on compound stalks, forming heads 
bordered with hyaline cysts, each spore one- or two-celled; wall colored, smooth or 
verrucose. 
Type species, Ravenelia Farlowiana Dietel (on Acacia anisophylia). 
Paraphyses absent. 
Teliospore-heads black ; cysts pendent. 1 
Teliospore-heads brown ; cysts appressed. 2 
Paraphyses present. 
Teliospore-heads smooth. 3. 
Teliospore-heads tuberculate. 4 
. opaca. 
. Larlowiana, 
D 
D 
D. Lysilomae. 
D, verrucosa. 
1. Dendroecia opaca (Dietel) Arthur. 
Ravenelia opaca Dietel, Hedwigia 34: 291. 1895. 
O. Pycnia amphigenous, few, crowded in small orbicular groups, chestnut-brown, papil- 
liform, subcuticular, conoidal, much flattened, 160-300 » broad, 40-60 » high. 
III. Telia chiefly epiphyllous, scattered irregularly, angular, large, 1-2 mm. across, 
subepidermal, soon naked, black, shining, ruptured epidermis rather conspicuous; teliospore- 
