534 
J. C. ARTHUR 
traneous objects. The dendritic distribution of the blackish, loose 
telia is also very striking. 
210. Puccinia Trixitis (Kern & Kellerm.) comb. nov. (on Carduaceae). 
Trixis frutescens P. Br., Antigua, 5300 feet alt., Dept. Sacafe- 
pequez, Jan. 11, 1915, II, III, 71; same, March 9, 1916, II, III, 
^81 ] Solola, Jan. 25, 1915, II, iii, 108; near Santa Maria, Dept. 
Quezaltenango, Jan. 15, 1917, II, 725. 
This rust was published as Uredo Trixitis Kern & Kellerm. founded 
on a collection made at San Lucas, Dept. Solola, Feb. 1906, Keller- 
man (Journ. Mycol. 13: 26. 1907). It was issued as Kellerm. 
Fungi Sel. Guat. 20. The beginning stage in the life cycle of the 
species is yet to be discovered. 
211. Puccinia Schistocarphae Jacks. & Holw. sp. nov. (on Car- 
duaceae). 
Schistocarpha platyphylla Greenm., San Rafael, Dept. Guatemala, 
Jan. 9, 1915, 42 (type); Volcan de Agua, Dept. Sacatepequez. 
Jan. 13, 1915, ^5 ; same, March 7, 1916, 57J. 
Schistocarpha sp., Aguas Amargas, Dept. Quezaltenango, Jan. 
30, 191 7, III, road between Colomba and Quezaltenango, 
Feb. 4, 1917, III, 834. 
Telia hypophyllous, crowded over areas 0.5-2 mm. across, early 
naked, compact, very light yellowish-brown, becoming cinereous by 
germination, ruptured epidermis inconspicuous; teliospores oblong, 
16-22 by 39-55 M rounded at both ends, or slightly narrowed below, 
slightly constricted at septum ; wall colorless or very light golden-brown, 
1-1.5 // thick, thicker above, 5-9 /jl, smooth; pedicel colorless, short. 
No pycnia were found with this short-cycle, leptoform rust, and 
doubtless none are formed. 
212. Puccinia proba Jacks. & Holw. (on Carduaceae). 
Zexmenia elegans Schultz Bip., Mulua, between Mazatenango and 
Retalhuleu, Feb. 26, 1916, O, II, III, 5Jj; San Felipe, Dept. 
Retalhuleu, Jan. 12, 1917, II, III, 68p, 6g8, yoo] same, Jan. 
13, 1917, II, III, 714. 
Zexmenia frutescens (Mill.) Blake, Solola, Jan. 25, 1915, ii, III, iog\ 
Quirigua, March 22, 1916, O, IIi, II2, III, 601 
Zexmenia Salvinii HemsL, Guatemala City, Feb. 8, 1917, II, 847. 
A long-cycle rust, having pycnia, uredinia, and telia. It also 
occurs in Costa Rica. 
