530 J. C. ARTHUR 
196. PucciNiA OAXACANA Diet. & Holw. (on Carduaceae). 
Conyza asperifolia (Benth.) Benth. & Hook. {Baccharis hirtella DC), 
San Rafael, Dept. Guatemala, Jan. 7, 1915, I, J2; same, Jan. 
9, 1915, ii, III, 46', Colomba, Dept. Quezaltenango, 3 Feb., 
1917, III, 826. 
The aecia in no. 32 of this long-cycle rust are not in small groups 
on the leaves, as usually seen, but on the axillary buds, causing 
them to become greatly hypertrophied, making an etiolated mass 1-2 
cm. long, and thickly covered with the aecia. The rust is often listed 
as Erio sporangium oaxacanum (Diet. & Holw.) Arth. 
197. PucciNiA NoccAE Arth. (on Carduaceae). 
Lagascea suaveolens H.B.K., Guatemala City, Jan. 3, 191 5, II, 
12a] same, Feb. 8, 1916 II, 463; Solola, 6000 feet alt., Jan. 30, 
1915, II, iii, J55. 
A long-cycle rust, whose primary form is unknown. Heretofore 
it has been recorded only from Mexico. 
198. PucciNiA Galeae Arth. (on Carduaceae). 
Galea Zacatechichi Schlecht., Antigua, Dept. Sacatepequez, Dec. 
28, 1916, III, 643. 
Galea Zacatechichi macrophylla Robins. & Greenm., Guatemala 
City, Jan. i, 1915, ii, III, 7; Chinaulta, Dept. Guatemala, 
Jan. 17, 1915, III, 89\ Solola, Jan. 27, 1915, III, 132. 
Galea sp., Panajachel, Dept. Solola, Jan. 3, 1917, III, ^75. 
A long-cycle rust, with all spore forms, known heretofore only from 
Mexico. 
199. Puccinia ordinata Jackson & Holw. sp. no v. (on Carduaceae). 
Galea insignis Blake, Quezaltenango, Jan. 31, 191 7, Siy. 
Galea integrifolia (DC.) Hemsl., Solola, 7000 feet alt., Jan. 28, 1915, 
745; Zunil, Dept. Quezaltenango, Jan. 28, 191 7, 7po. 
Telia chiefly hypophyllous, crowded and confluent opposite dis- 
colored sunken spots 1-1.5 mm. across, early naked, pulvinate, black- 
ish becoming cinereous by germination, ruptured epidermis noticeable; 
teliospores oblong-cylindric, 16-19 by 45-70 rounded or obtuse 
above, narrowed below, slightly constricted at septum; wall cinnamon- 
brown, darker above, 1-2 /jl thick, much thicker at apex, 6-12 ijl, 
smooth; pedicel colored like the spore, short. 
A short-cycle rust in which the pycnia are probably not formed. 
It resembles P. Synedrellae on the nearly related host Tridax pro- 
cumbens, but with spores half as much larger. 
