520 MINNESOTA BOTANICAL STUDIES. 
polygamous; filaments slender ; anthers linear : akenes flattened, 
strongly nerved, style persistent. Morelos, south of Mexico 
City (t). 
ae Gatepeul Wee. le.) 2402) 1 8450,12, 72 0,. “Loos: 
Rather tall and simple, glabrous, 2-3-pinnate; stipules 
ample; leaflets small, thin, ovate to obovate, toothed or lobed 
above, glabrous: panicles rather leafy; flowers small, whitish, 
moneecious or polygamous; sepals slightly dentate; anthers 
linear, somewhat obtuse: pistils 5 to 11: akenes nearly sessile, 
compressed, glabrous, semi-ovate, veined, widely spreading ; 
styles long, slender, withering. September—October. Moun- 
tains of central Vera Cruz (f). 
T. Hernandezii Tauscu. in Presl. Reg. Haenk. 2: 69. 1835. 
Stem 3-5 feet high; glandulous, leafy, branching; leaves 
2 to 3 times 5-parted; leaflets large, often subsessile, variable in 
outline, usually oval, 3-lobed or sharp toothed above; under 
side glandular: flowers in a conical panicle, moncecious or 
polygamous; sepals 4, greenish; anthers linear, mucronate: 
akenes 5-7, sessile or stipitate, obliquely ovate, compressed; 
spreading, irregularly ribbed and protuberiferous; styles long, 
slender, somewhat persistent. June-August. Southeastern 
Mexico, "Oaxaca,-ete, — Lec.’ 2.17; 2 (Ff). 
hevanposam ioe. loc. 24:°232. 2.2.7.7. 1885. 
Tall, erect, simple, or branched, glabrous: leaves 2 to 3 times 
pinnate, petiole stipuled; leaflets small, thin, oval, stalked, 3 
sharp teeth above, often other small ones: panicles slightly 
leafy: flowers moncecious or polygamous, small, greenish; 
sepals feebly dentate; anthers linear, usually blunt; pistils 4-5 : 
akenes stalked, flattened, tapering above and below, glabrous, 
strongly ribbed, reticulated and provided with protuberances, 
widely spreading; style long and slender, withering. Sept.— 
Oct. Mountains of western Oaxaca (f). 
T. lanatum Lec. in Bull. Soc. Roy. Bot. Belg. 16: 226. 
1877. 
Rather tall and leafy, hispid: leaves 2 to 3 times pinnate, very 
short petioled or sessile; leaflets variable in size and form, often 
orbicular or obovate, cordate or rounded at base, firm, glandular- 
hispid beneath, short-stalked, tridentate at summit, often with 
