6 PROCEEDINGS OF THE AMERICAN ACADEMY. 
ray-flowers with ligules much smaller than in the preceding, about 1} 
lines in diameter : the tube being relatively very long and slender (4 to 5 
lines in length) : chaff terminating in a long and slender awn. — 7’. bal- 
bistotdes, Gray, 1. ¢. xxii. 430, not xv. 39. 7. balbistoides, var. tenui- 
folia, Gray, (ined.) in distribs. Palmer and Pringle. — Jalisco, on the 
Rio Blanco, Palmer, no. 569; on rocky hills near Guadalajara, Pringle, 
nos. 2179, 2556. The later collections of Mr. Pringle show this plant 
quite distinct in its woody base and reduced rays from- 7. balbisioides. 
++ ++ Rays white, purplish, or roseate. 
= Pappus much longer than the achene. 
7. T. rosea, Schz. Bip. in herb. Hirsutulous annual, leafy near the 
base and often with spreading branches: leaves linear-oblong, irregularly 
toothed or trifid with toothed lobes: peduncles becoming very long (6 to 
10 inches), quite simple, naked or bearing 1 or 2 minute alternate bracts: 
heads large, with the spreading rays an inch or more in diameter: ligules 
oblong, 3 to 5 lines in length, slightly 3-toothed at the apex. — A good 
but apparently unedited species, founded by Schultz upon Schaffner’s 
no. 60, from Guadalupe, and collected in the same locality by Bilimek 
in 1865, no. 488, and Bourgeau, no. 586; also in Valley of Mexico, 
Schaffner, no. 265. 
= = Pappus shorter than or barely equalling the achene. 
8. T. Palmeri, Gray. Pubescent or puberulent, 2 feet high, usu 
ally with a few ascending branches, naked above: leaves mostly much 
cleft or deeply and laciniately parted into narrow acute segments: sie 
broad, obovate, truncate, essentially entire, roseate : disk-flowers greenish 
yellow. — Proc. Am. Acad. xv. 38. — San Luis Potosi, on rocky bluffs 
at Alvarez, altitude 8,000 feet, Parry § Palmer, nos. 489, 490, 482}, 
also Schaffner, no. 236. 
Var. indivisa, Robinson & Seaton. Somewhat stouter and a 
densely pubescent: leaves ovate, subhastate, abruptly contracted into 4 
petiole, repand-dentate, not lobed. — Proc. Am. Acad. xxviil. 109.— 
Ledges of cafions on mountains near Lake Chapala, Jalisco, Pring! et 
4332. Mr. Pringle states that the base is perennial. 
“} + South American species, of the Andes of Bolivia and Ecuador: leaves 
narrow : pappus longer than the achenes. 
9. T. Mandonii, Schz. Bip. Branched, hirsute: leaves sinuate OF 
repand-dentate : involucral scales rounded at the apex, sparingly puberu- 
: lent near the ends or quite glabrous: rays very small. — Bull. Soc. Bot. 
‘Fr. xii. 82, & Linnea, xxxiv. 586, Mandonia Boliviensis, Wedd. Bull 
