46 PROCEEDINGS OF THE AMERICAN ACADEMY. 



Verbesina Nelsonii. Stout, apparently herbaceous : stem striate- 

 angulate, puberulent under a lens, internodes entirely wingless or with a 

 broadish irregular deciduous corky wing near the summit : leaves green 

 and glabrous on both surfaces, oblong, acuminate, penuinerved, crenate- 

 serrate, 6 to 8 inches long, H to 2 inches broad, below the middle 

 slightly narrowed and somewhat crisped or undulate ; the base broadly 

 auriculate and amplexicaul, midrib prominent beneath, pale : heads 

 numerous, of medium size, 4 to 5 lines in diameter, in a very dense 

 terminal compound corymb ; bracts oblong, small, scarcely herbaceous : 

 pedicels tomeutulose : involucre campanulate ; scales about 10, subuni- 

 seriate, oblong, obtusish, 2 lines long ; ray-flowers 4 to 6 ; ligules very 

 small, yellow, 2 to 2^ lines long, nearly a line in breadth : chafE obovate, 

 mucronate, pubescent on the outer surface especially on the prominent 

 keel : achenes a line long, hispidulous, with conspicuous wing on each 

 edge, awns subequal. — Collected by E. W. Nelson, between Ayusinapa 

 and Petallan, altitude 5,000 to 7,000 feet, 14 December, 1894, no. 2118. 



Verbesina Smithii. Branching shrub : branches glabrous, wing- 

 less, covered with a pale grayish cortex roughened with numerous lenti- 

 cels : branchlets gray-tomentose : leaves alternate, lanceolate, attenuate at 

 both ends but obtusish and mucronulate at the apex, rather sliallowly ser- 

 rate-dentate except at the cuneate short-petioled base, bright green and 

 scabrous-puberulent above, white-tomentose beneath, 3 to 4 inches long, 

 10 to 14 lines broad : heads small, 2 lines high, 3 lines broad, not very 

 numerous in small terminal corymbs ; these 2 inches in diameter not 

 exceeding the surrounding leaves: bracts small, grayish-tomentose as 

 well as the pedicels : involucral scales about 3-seriate, elliptic-oblong, 

 obtuse, green, pubescent on the outer surface, ciliated, a line long : 

 disk-flowers 30 to 35 ; ray-flowers about 8 ; ligules yellow, H to 2 lines 

 long ; chaff obovate, obtusish, yellow toward the summit, puberulent on 

 the outer surface : achenes (immature) distinctly winged on each side ; 

 awns 2, slightly unequal. — Collected by L. C. Smith, at Jayacatlan, 

 Oaxaca, altitude 4,500 feet, 10 September, 1894, no. 132. 



Verbesina trilobata. Stems 5 to 10 feet in height, branched, 

 glabrous, lucid, wingless, covered with light colored cortex : leaves 

 opposite, decussate, rhombic in general outline, strongly 3-lobed, den- 

 ticulate, gradually narrowed to a subsessile base, scabrous-puberulent 

 above, grayish-tomentose beneath, subpalmately and rather obscurely 

 3-5-nerved from considerably above the base and reticulate-veined ; 

 terminal lobe elongated, ovate to oblong-lanceolate, acuminate ; the 

 lateral much shorter and rather blunt ; sinuses rounded : corymbs much 



