ARTHUR: NEW SPECIES OF UREDINEAE 111 
County, Florida, September 27,.1904, A. Fredholm 6406. Both 
collections were communicated in the spring of 1917 by Mrs. Agnes 
Chase, who separated them from specimens in the grass herbarium 
of the U. S. National Herbarium. | 
Andropogon stolonifer is closely related to A. scoparius Michx., 
differentiated from it chiefly by having well-developed stolons. 
The two belong to the genus section Schizachyrium, while A, 
Schoenanthus L., the host of Hennings’ Uredo Kaernbachii, belongs 
to the section Cymbopogon. It is the opinion of Mrs. Chase that 
the plant intended by ‘‘A. Schoenanthus’*may be one of the oil 
grasses that passed under that name. However, Stapf has shown 
that the true A. Schoenanthus is the desert grass called A. laniger 
Desv. 
Puccinia pallescens nom. nov. 
Uredo pallida Diet. & Holw.; Holway, Bot. Gaz. 24: 37. 1897. 
Not Puccinia pallida Tracy, 1893. 
II. Uredinia amphigenous, oval or oblong, pale yellowish; 
paraphyses none; urediniospores ellipsoid, obovoid or pyriform, 
13-21 by 20-29 u; wall colorless or nearly so, thin, about Iu, 
finely and moderately echinulate, the pores equatorial, very 
indistinct, probably 4. 
III. Telia hypophyllous, scattered or associated in rather 
indefinite groups about I cm. across, oval or oblong 0.5-2 mm. 
long, covered by the epidermis, very compact and stromatoid, 
brownish-black due partly to discoloring of surrounding host 
tissue; teliospores cylindric, 1-4-celled, usually 2- or 3-celled, 
9-16 by 26-67 », truncate or rounded at both ends, slightly or 
not constricted at septum; wall light golden-brown, thin, Iu, 
slightly thicker above, 2~3 u, smooth; pedicel very short or lacking. 
On Tripsacum lanceolatum Rupr., near City of Mexico, Mexico, 
October 1, 1896, II, Holway (type of Uredo pallida); Tizapan, 
near City of Mexico, Mexico, September 27, 1899, II, Holway 3504. 
On Tripsacum latifolium Hitchc., Aguacalientes, Dept. Santa 
Rosa, Guatemala, January 25, 1908, II, iii, Kellerman 7802; 
Jinotepe, Nicaragua, November 3-7, 1911, II, III, Hitchcock 
(phan.) 8720; Volcano of San Salvador, Salvador, November 20- 
26, 1911, II, Hitchcock (phan.) 8947. 
On Zea Mays L., Naguabo, slope of El Duque, Porto Rico, 
April 19, 1916, II, Whetzel & Olive 440. 
