UREDINALES OF GUATEMALA 
535 
In the phanerogamic herbarium at the New York Botanical 
Garden two additional collections from Guatemala were found, both 
given as on Z. costaricensis { = Z. frutescens Blake), one from Cubel- 
quitz, Dept. Alta Vera Paz, Nov. 1900, H. von Tiirckheim 774^^, and the 
other from Los Amates, Feb. 6, 1905, C. C. Deam J02. In the phan- 
erogamic herbarium of the Field Museum sheet no. 194857, bearing 
Zexmenia elegans Kellermanii Greenm., shows this rust, II, III. The 
collection was made at Los Amates, Jan. 17, 1905, Kellerman 5332. 
213. Puccinia inaudita Jacks. & Holw. sp. nov. (on Carduaceae). 
Zexmenia leucactis Blake, Escuintla, Feb. 19, 1916, O, I, III, 505; 
San Felipe, Dept. Retalhuleu, Jan. 12, 1917, O, I, III, ii, 6g3 
(type); Colomba, Dept. Quezaltenango, Feb. 3, 1917, O, I, 
ii, iii, 823. 
Zexmenia longipes Benth., Guatemala City, Dec. 23, 1916, O, I, 
ii, III, 628. 
Pycnia chiefly epiphyllous, usually numerous, on raised spots 
0.5-1.5 mm. across, conspicuous, subepidermal, deep-seated, flask- 
shaped, 125-160 IX broad by 160-190 ix high. 
Aecia amphigenous, few in groups opposite or among the pycnia, 
cylindric, 0.2-0.3 mm. broad by 1-2.5 mm. long; peridium whitish, 
membranous, becoming deeply lacerate; peridial cells in face view 
angularly ellipsoid or polyhedral, 20-30 by 45-55 a(» the wall uniformly 
thin, 1-1.5 M> very fijiely and closely verrucose-rugose ; aeciospores 
angularly ellipsoid or globoid, 16-24 by 24-32 /i; wall pale cinnamon- 
brown, 1.5-2.5^ thick, coarsely tuberculate with colorless markings 
giving the appearance of reticulations. 
Uredinia hypophyllous, scattered, round or oval, 0.2-0.4 mm. 
across, early naked, pulverulent, dark cinnamon-brown, ruptured 
epidermis evident; urediniospores ellipsoid or obovoid, 19-21 by 24- 
29 ix\ wall golden-brown, rather thick, 2 moderately echinulate, the 
pores 3-4, scattered. 
Telia hypophyllous, scattered, round, 0.5-0.8 mm. in diameter, 
early naked, pulvinate, whitish, ruptured epidermis inconspicuous; 
teliospores oblong or fusiform-oblong, 16-19 by 42-64 ix, rounded or 
obtuse above, somewhat narrowed below, constricted at septum; wall 
colorless, uniformly thin, 1-1.5 ix, the pore of lower cell at septum, 
smooth; pedicel colorless, fragile, equaling the spore or shorter. 
The combination of life cycle and morphological characters in this 
species makes it especially notable. In gross appearance the very long 
and delicate aecia together with the small, pale telia easily distinguish 
it from other forms on Zexmenia and nearly related hosts. 
