294 BOTANICAL GAZETTE [APRIL 
telia, the specimen bears mature aecia which without doubt belong in the life 
cycle, making it possible to complete the description. In the Arthurian classi- 
fication this species would be assigned to the genus Eriosporangium. This 
species is known otherwise only from the type collection made by Mayor near 
Bogota, Department of Cundinamarca, Colombia, on V. crotoneaster. 
2. PUCCINIA MEMBRANACEA Diet., Hedwigia 38:251. 18099. 
On Vernonia cauloni Sch., Tijuca, Rio de Janeiro, Brazil, May 1896, 
E. Ule 2337: 
So far as can be determined from the literature, this species is known only 
from the type collection listed, which the writer has not seen. Only aecia and 
telia are described. It is evident from the description that it is closely related 
to the preceding species, although differing in the size of the aeciospores (25-30 
by 30-35 #) and in the width of the teliospores (18-20 by 60-90 p), as well as in 
the absence of uredinia. The latter, however, in related rusts are often 
inconspicuous and sparingly developed and might easily be overlooked. 
3. Puccinia erratica Jackson and Holway, nom. nov.—Dieielia 
Vernoniae Arth. Bor. Gaz. 40:198. 1905; Endophyllum Vernoniae 
Arth. N. Am. Flora 7:126. 1907. 
O. Pycnia epiphyllous, numerous, in crowded groups, 1.0 mm. 
across, in the center of yellowish spots o.5—1.0 cm. in diameter, 
conspicuous, subepidermal, orange becoming black, globose or 
flask-shaped, 120-145 by 145~—160 y, ostiolar filaments not extruded. 
I. Aecia hypophyllous, few or solitary, crowded on the under 
side of yellowish spots opposite the pycnia or occasionally more or 
less scattered, bullate, o.2-0.5 mm. across; peridium wanting; 
aeciospores somewhat irregularly ellipsoid, oblong or pyriform, 
23-28 by 32-38 u, somewhat flattened, wall colorless, 2-3 thick, 
prominently and closely verrucose-rugose, with a tendency to an 
arrangement in lines and uniting to form ridges at one end of the 
spore, tubercles often deciduous. : 
II. Uredinia hypophyllous, few, scattered, roundish, small, 
o.1-o.3 mm. across, rather tardily naked, pulverulent, cinnamon 
brown, ruptured epidermis conspicuous; urediniospores globoid or 
broadly obovate, 23-28 by 29-34 u, wall cinnamon brown, 1-1.5 # 
moderately echinulate, pores 3, approximately equatorial. 
III. Telia hypophyllous, numerous, scattered or gregarious, 
round, small, o.2-o.5 mm. across, early naked, pulvinate, chestnut 
brown, ruptured epidermis noticeable; teliospores cylindrical terete 
