126° NORTH AMERICAN FLORA [VOLUME 7 
17. ENDOPHYLLUM Lév. Mém. Soc. Linn. Paris 4: 208. 1825. 
Cycle of development includes only pycnia and telia, both subepidermal. 
Pycnia deep-seated, somewhat erumpent, flask-shaped, with ostiolar filaments. 
Telia bullate, definite, round, pulverulent. Peridium evanescent, cells resembling 
spores but flattened. Teliospores catenulate or seemingly compacted without order, one- 
celled, globoid to ellipsoid ; wall colored, medium thick, verrucose. 
Type species, Exdophyllum Persoonti Lév. (on Sempervivum tectorum). 
Teliospores wholly verrucose. 1. EZ. Rivinae. 
Teliospores verrucose, except base. 2. E. Vernoniae. 
1. Endophyllum Rivinae (B. & C.) Arthur. 
Aecidium Rivinae B. &. C. Jour. Linn. Soc. 10: 358. 1869. 
O. Pycnia unknown, probably not formed. 
III. Telia caulicolous and petiolicolous, numerous, thickly and evenly scattered over 
swollen and distorted areas, round, 0.3-0.6 mm. across, soon naked, cinnamon-brown, 
pulverulent, ruptured epidermis inconspicuous; peridia falling apart readily, cells about 
the size of the spores, flattened, with thicker walls, inner wall very coarsely verrucose, 
outer smooth ; teliospores ellipsoid, more or less angular by pressure, 17-23 by 29-34; wall 
dark cinnamon-brown, closely and strongly verrucose, medium thick, 1.5-2.5 4. 
ON PETIVERIACBAE : 
Rivina octandra ¥,., Cuba. 
TYPE LOCALITY: Cuba, on Rivina octandra. 
DISTRIBUTION : West Indies; also in South America. 
2. Endophyllum Vernoniae Arthur. 
Dietelia Vernoniae Arth. Bot. Gaz. 40: 198. 1905. 
O. Pyenia chiefly epiphyllous, numerous, crowded in orbicular groups, punctiform, 
golden-yellow becoming brown, prominent, subepidermal, depressed-globoid, or somewhat 
conical, 130-145“ broad; central cavity large; ostiolar filaments becoming agglutinate. 
III. Telia hypophyllous, crowded opposite the pycnia in annular groups of 2-7, or soli- 
tary, round, 0.5 mm. across, soon naked, pulverulent, ruptured epidermis noticeable ; 
peridia falling apart and disappearing with the spores, cells similar to the spores, but flat- 
tened and smooth on the outer surface; teliospores ellipsoid or globoid, more or less 
angular and irregular from pressure, 22-27 by 30-37“; wall very pale-yellow, medium 
thick, 1.5-2y, closely and strongly verrucose, except a small spot at the base, the tubercles 
somewhat deciduous. 
ON CARDUACEAE : : 
Vernonia (Deppeana Less.?), Veracruz. 
TYPE LOCALITY: Jalapa, Mexico, on Vernonia, probably V. Deppeana. 
DISTRIBUTION : Known only from the type locality. 
DOUBTFUL SPECIES 
Endophyllum singulare Dietel & Holway,. Bot. Gaz. 31: 336. 1901. On some erica- 
ceous plant from Mexico. 
18. PUCCINIOSIRA Lagerh. Ber. Deuts. Bot. Ges. 9: 344. 1891. 
Schizospora Dietel, Ber. Deuts. Bot. Ges. 13: 334. 1895. 
Aecidiella Ellis & Kelsey, Bull. Torrey Club 24: 208. 1897. 
Cycle of development includes only pycnia and telia, both subepidermal. 
Pycnia somewhat erumpent, flask-shaped, with ostiolar filaments. 
Telia erumpent, definite, round. Peridium cylindrical, rupturing at apex. Telio- 
spores catenulate, ovoid or ellipsoid, two-celled by transverse partition ; wall nearly or 
quite colorless, smooth or nearly so. 
Type species, Pucciniosira Triumfettae Lagerh. (on Triumfetta sp.). 
Teliospores smooth. 1. P. pallidula. 
cliocpores minutely verrucose. 2. P. Brickelliae. 
