1918] JACKSON—PUCCINIA 329 
rounded at both ends, cells easily separating, strongly constricted 
at septum, wall dark cinnamon brown, uniform in thickness, 
2.5-3.5 MM, minutely verrucose-rugose, often in lines extending in 
various directions; pore of apical cell placed about half way from 
apex to septum, similarly in lower cell; pedicel colorless, usually 
deciduous. 
On Vernonia Deppeana Less., San Jose, Costa Rica, December 15, 1915, 
Holway 260 (type), January 3, 1916 (363), January 10, 1916 (406), December 77; 
1915 (305); Sierra de las Minas, alt. 3500, El Rancho, Dept. Baja Verapaz, 
Guatemala, January 3, 1908, W. A. Kellerman 7026; San Felipe, Retalhuleu, 
Guatemala, January 14, 1917, O, III, Holway 721; Colomba, Dept. Quezal- 
tenango, Guatemala, February 2, 1917, Holway (818). 
A very distinct species, related to P. rotundata Diet., but easily separated 
by the strongly constricted teliospores and in the less conspicuous character 
of the markings of the teliospore wall. 
23. Puccinia inaequata Jackson and Holway, sp. nov. 
O. Pycnia epiphyllous, few, gregarious in the center of lighter 
colored spots, noticeable, subepidermal, depressed  globoid, 
100-120 uw high by 100-175 uw broad; ostiolar filaments short. 
II. Primary uredinia chiefly epiphyllous, crowded and somewhat 
confluent in concentric groups, 2.2 mm. across, surrounding the 
pycnia, early naked, pulverulent, cinnamon brown, ruptured epider- 
mis conspicuous; secondary uredinia amphigenous, numerous, 
scattered, roundish, small, o.2-0.5 mm. across, early naked, 
pulverulent, cinnamon brown, ruptured epidermis noticeable; 
urediniospores obovoid or broadly ellipsoid, 18-23 by 23-28 u, pale 
cinnamon brown, 1.5—3 u thick, prominently and sparsely echinu- 
late, pores 2 or 3, approximately equatorial. 
III. Telia amphigenous, scattered, round, small, o.2-0.5 mm. 
across, early naked, at first pulvinate becoming somewhat pulveru- 
lent, blackish brown, ruptured epidermis conspicuous; teliospores 
oblong or broadly ellipsoid, 22-26 by 30-38 u, rounded at both 
ends, not or scarcely constricted; wall dark cinnamon or chestnut 
brown, 2.5—3 yu, slightly thickened at apex, 4-5 #; finely and evenly 
verrucose-rugose; pedicel colorless, short, usually deciduous, often 
laterally attached; pore of lower cell below the middle. 
On Vernonia patens H.B.K., Esquintla, February 17, 1916, Holway, O, 
I, II, 502 (type); Mazatenango, February 22, 1916, II, Holway 513; Sanarate, 
