June, 1923] GLEASON — BOLIVIAN SPECIES OF VERNONIA 309 
prenanthoides; the largest in the two sheets at hand are 11 by 4 cm. Corollas 
are not present, but were noted by the collector as blue or white in color. 
49. V. auriculata Griseb., Goett. Abhandl. 24: 163. 1879. 
Tarija, Lorentz 874 (isotype). 
50. V. laurifolia DC., Prodr. 5: 30. 1836. 
Cargadira, Williams 1531; Yungas, Bang 617 , Rusby 1617; Mapiri, 
Bang 1534. 
51. V. canaminina n. sp. 
Herb 6-9 dm. high, with purple flowers; stems strongly angled, glabrous, 
branching only in the inflorescence; leaves linear-oblong, the upper about 
6 cm. long by 8 mm. wide, sharply but remotely dentate, closely sessile, 
scabrellate above, closely and finely tomentulose beneath; inflorescence 
large, loose and open; heads numerous, sessile or peduncled, about 26- 
flowered; involucre 8 mm. high, broadly obconic to subhemispheric, the 
few scales loosely and irregularly imbricate, glabrous, green or brownish 
below, purple at the tip, with a green or scarious margin, the outer ovate- 
lanceolate, acute or subacute, the inner narrowly oblong, obtuse or rounded; 
corolla 8 mm. long, the linear lobes glabrous, 2.5 mm. long; achenes 4 mm. 
long, prominently ribbed, pubescent; pappus pale straw-colored, the 
numerous bristles 7 mm. long, the paleae linear, erect, 0.6 mm. long. 
Canamina, alt. 4,500 ft., White 732 (type, in the herbarium of the New 
York Botanical Garden). 
Differing from V. fulta, with which it appears related, in its narrower 
and sessile leaves, its erect habit, tomentulose leaves, broader and more 
open inflorescence, smaller heads, shorter involucre, narrower and blunter 
involucral scales, and shorter pappus. The type specimen bears only two 
leaves, so that the shape and dimensions of the lower ones are unknown. 
52. V. fulta Griseb., Goett. Abhandl. 24: 164. 1879. 
V. senecionaefolia Britton, Bull. Torrey Bot. Club 18: 331. 1891. 
V. trixioides Rusby, Mem. Torrey Bot. Club 6: 54. 1896. 
Mapiri, Williams 782, Bang 1484 (type of V. trixioides) , Buchtien 1523; 
Guanai Rio, Williams 1393; Machichoirisa, Williams 1607; Canamina, 
Rusby 312; Yungas, Rusby 1730 (type of V. senecionaefolia ); Suri, White 
226; Bopi River, Rusby 399; without definite locality, Kuntze, Mulford 
Biological Exploration 2148. 
In addition to the preceding, V. mollis HBK. was reported from Bolivia 
by Schultz-Bipontinus, who also published the nomina nuda V. centauroides 
and V. quindecimflora. No material has been seen which could be referred 
to V. brachylepis Griseb. or to V. centauropsidea Hieron. 
New York Botanical Garden 
22 
