195) ARTHUR—RUSTS ON COMPOSITAE FROM MEXICO 205 
34. Puccinia Zaluzaniae, n. sp.—Uredosori chiefly epiphyllous, 
scattered, round, small, soon naked, ruptured epidermis evident; 
uredospores obovate, 16-21 by 23-274, wall golden-brown, rather 
thin, 1.5-2H, sparsely and finely echinulate, pores 2, opposite in the 
equator: teleutosori chiefly epiphyllous, scattered, very small or 
punctiform, confluent, somewhat pulverulent, blackish; teleutospores 
semiopaque, ellipsoid, 21-27 by 39-45, obtuse or rounded at both 
ends, slightly or not constricted at septum, wall dark chocolate-brown, 
minutely rugose, medium thick, 1.5—2.5, thicker at apex; pedicel 
colorless except next the spore, tapering downward, lowest third 
noticeably roughened, twice length of spore. 
On Zaluzania asperrima Schz. Bip., Tehuacan, Nov. 7, 1903, no. 5347. 
This species is much like Puccinia Electrae, but has smaller and less roughened 
spores, which form smaller sori. 
35- Puccinta Crrsit Lasch. 
. oa lomatole pis (Hemsl.), City of Mexico, Oct. 14, 1898, no. 3047: 
: sts (Klatt.), Toluca, Sept. 19, 1898, no. 3133: Carduus sp., Patz- 
cuaro, Oct. 17, 1898, no. 3102; Uruapan, Oct. 11, 1899, no. 3616; Etla, State of 
Oct. a2 1899, NO. 3730. 
36. Puccinia concinna, n. sp.—Uredospores in the teleutosori 
sloboid, 19-22 by 24-28u, wall thin, rp, minutely echinulate, pores 
+ approximately equatorial: teleutosori chiefly hypophyllous, scat- 
a roundish, 0-5-1" across, pulvinate, blackish; teleutospores 
oo: aa 24-30 by 37-50H, rounded or obtuse at apex, 
fase? ow, slightly or not constricted at septum, wall chocolate- 
"1s Smooth, thick, 3-3-5, thicker above, 6-10, concolorous; 
je = except next the spore, delicate, once to thrice length 
»r€, olten deciduous. 
aes sea Creggii (A. Gr.) Small (Eupatorium Greggii A. Gr.), Sierre 
: bee 1899, E. W. Nelson, comm. W. G. FarLow. ; 
"a Meas di a much like the South American P. Eupatorii Diet., but differs 
-walled uredospores, with twice as man res, and much 
teleutospores. The sorus of the North American form is also 
and earlier naked. 
ie alee Diet. and Holw. 
DC, ¢ “igi DC., Oaxaca, Nov. 10, 1903, NO. 5375: E. > 
Jalisco, Ot Ras. as th no. 5274: Eupatorium sp., Sayula, State o 
