1918] JACKSON—PUCCINIA 311 
Vernonia Kuntzii Hieron., Santa Cruz, Bolivia, May 1892, Otto Kuntze. It is 
perhaps related to P. semiinsculpta, from which it differs chiefly in the broader, 
more closely echinulate urediniospores. 
26. PUCCINIA PAUPERCULA Arth. Bot. GAz. 40:206. 1905.— 
P. Elephantopodis-spicati Pat. Bull. Soc. Myc. Fr. 28:140. 1912. 
This species, known only on Elephantopus spicatus Juss., was originally 
described from a collection made by E. W. D. Holway (3074) at Vera Cruz, 
Mexico, October 5, 1898. A second collection was made by Holway at San Jose, 
Costa Rica, January 3, 1916 (353). Collections have also been made by Holway 
spores are oblong or lanceolate oblong, 15-17 by 39-50 p, acute or obtuse at 
apex, obtuse or narrowed at base, and scarcely constricted at the septum. 
The wall is smooth, chestnut brown, rather thin, 1-2 and considerably 
thickened to 7-9 w at apex. The pedicel is firm, colored like the spore, about 
one-half the spore length. 
The type of P. ee An to agen Pat. was described from tar 
collected by Tonduz at San Fra o de Guadalupe, Costa Rica, July 190 
A portion of the type has been cendnde and agrees in all essential i se 
with the type of P. paupercula and occurs on the same host species. 
27. PUCCINIA ELEPHANTOPODIS P. Henn. Hedwigia Beibl. 
39°154. 1900. 
This species, known only from the type collection made at Santa Anna, 
Argentina, by G. Neiderlein, January 22, 1883, on Elephantopus angustifolius, 
is interpreted by Sypow as being a micro-form. He states that the uredinio- 
spores described by HENNINGS are single cells of the teliospores. The latter are 
described as ovoid, subcuneate to ellipsoid, 18-23 by 25-33 », wall minutely 
verrucose, 3~4 mu thick, light brown, apex not or scarcely thickened, constricted 
at the septum, pedicel hyaline, short, fragile. This species has not been seen 
by the writér, and the assignment in the preceding key is largely based on 
Sypow’s interpretation. 
28. PucciniA PrerocarPHAE P. Henn. Hedwigia 35:240. 18096. 
This species was described from two specimens collected at St. Catharina, 
pr. Blumenau, Brazil, by E. Ule, one on Piptocarpha oblonga, the other on 
Piptocarpha sp., December 1888, nos. 1317, 1198. Specimens of both collec- 
tions have been examined by the writer. The urediniospores are globoid, 
27-32 by 29-34 mw, wall cinnamon brown, 1.5-2.5 » in thickness, moderately 
and strongly echinulate, the pores obscure but apparently 4-6, scattered. The 
eliospores are oblong clavate or ellipsoid, 26-29 by 45-56 m, apex and base 
rounded, somewhat constricted, wall cinnamon brown, 1 » or less in thickness, 
smooth, wall slightly thickened to 2.5 m at apex. 
