298 BOTANICAL GAZETTE [APRIL 
is fragmentary and admitting of rather incomplete description of some stages. 
The species, however, is clearly distinct from any form previously described, 
having medium sized teliospores and possessing aecia with peridia. It is 
apparently most closely related to P. insulana, and difficult to separate from it 
in the uredinial and telial characters. The urediniospores, however, have 
thinner walls and the teliospores are somewhat narrower. The presence of 
aecia, however, clearly distinguishes it from that species. It should doubtless 
be considered a correlated form. 
g. Puccinta LE Testu Maubl. Bull. Soc. Myc. Fr. 22:71. 1906. 
This species is known only from Marromen, East Africa, on Vernonia sp. 
No material has been available for study. Aegia and telia only are known, 
the latter described as oblong to ellipsoid-oblong, apex rounded, base narrowed, 
constricted at the septum, wall thick, apex thickened to 8, papillate, smooth, 
“flavo-brunneis,” 18-25 by 36~5om, pedicel subhyaline, persistent, to 50» long. 
From this it would appear to be different from any other described species, 
although possibly close to P. fuscella. 
10. Puccinia hyalina, sp. nov. 
O and [. Pycnia and aecia unknown. 
II. Uredinia amphigenous, scattered, occasionally gregarious, 
roundish, o.2-0.4mm. across, tardily naked, pulverulent, cinnamon 
brown, ruptured epidermis conspicuous; urediniospores broadly 
ellipsoid or obovoid, 22-26 by 29-34 uw, wall dark cinnamon brown, 
1.5-2.5 » thick, strongly and sparsely echinulate; pore one, basal, 
near the hilum. 
III. Telia hypophyllous, scattered or gregarious, round, small, 
©.2-0.4 mm. across, early naked, pulvinate, whitish or cinereous, 
ruptured epidermis not conspicuous; teliospores ellipsoid oF 
obovoid, 18-22 by 36-46 », rounded at apex and base or narrowed 
below, slightly constricted, germinating at maturity; wall colorless, 
thin, 1, thickened at apex to 6-8 y, smooth; pedicel colorless, 
equaling the spore. 
On Vernonia scariosa Arn., Ceylon, April 23, 1915, T. Petch. 
A very distinct species, easily separated from all other rusts on Vernonia 
by the single basal pore of the urediniospore and the colorless teliospores 
appreciably thickened at the apex. 
11. PUCCINIA VERNONIPHILA Speg. Ann. Mus. Buenos Aires 
193306. 1909. 
