60 NORTH AMERICAN FLORA [VoLUME 33 
TYPE LOCALITY: Peru?. : } i 
DISTRIBUTION: Veracruz to Costa Rica; southward into South America. 
5. Vernonia remotiflora Rich. Act. Soc. Hist. Nat. Paris 
ISS Alo 
Conyza uniflora Mill. Gard. Dict. ed. 8. Conyza no. 13. 1768. Not Vernonia uniflora Schultz-Bip. 
1847. 
Vernonia sessiliflora Willd.; Less. Linnaea 4: 309. 1829. 
Vernonia tricholepis DC. Prodr. 5: 54. 1836. 
Cacalia uniflora Kuntze, Rev. Gen. 969. 1891. 
Cacalia remotifiora Kuntze, Rev. Gen. 970. 1891. 
Stems herbaceous, branching above, 3-6 dm. high, puberulent; leaf-blades obovate- 
lanceolate, 3 cm. long, 1 cm. wide, varying to narrowly linear-oblong and broadly ovate, 
acuminate, subentire, attenuate to a sessile base, thinly papillose-pilose above, more abund- 
antly pilose or even sericeous and resinous-dotted beneath; cymes 10-20 cm. long, straight, 
erect or ascending; upper and bracteal leaves resembling the lower but smaller, 5-20 mm. 
long; heads 13-18-flowered, 1-2 cm. apart; involucre campanulate, 7-8 mm. high; scales 
straight and erect, narrowly lanceolate, sharply subulate-tipped, resinous, sparsely pilose or 
glabrate; achenes densely pilose, 2 mm. long; pappus white, the bristles 5 mm. long, the scales 
oblong, 0.8 mm. long. 
TYPE LOCALITY: Cayenne. 
DISTRIBUTION: South America; apparently introduced into St. Thomas. 
6. Vernonia acilepis Benth.; Oerst. Vidensk. Meddel. 
1852268. “W852: 
Cacalia acilepis Kuntze, Rev. Gen. 969. 1891. 
Stems herbaceous, erect, 3-5 dm. high, thinly pubescent; leaf-blades thin, broadly elliptic 
or rhombic, 4-6 cm. long, 1.5—2.5 cm. wide, short-acuminate, entire, narrowed at the base 
into short margined petioles, papillose-pubescent above, becoming scabrellate with the per- 
sistent hair-bases, strigose-pilose and not resinous beneath; inflorescence of 3-5 loosely spreading 
cymes bearing each 4-8 heads; bracteal leaves oblong to oblanceolate, 2-3 cm. long, resembling 
the cauline but smaller; heads about 15-flowered, 2-3 cm. apart; involucre narrowly cam- 
panulate, 8-10 mm. high; scales all erect, lanceolate, subulate-tipped, scarious at the margin, 
arachnoid below, thinly villous and not resinous above; achenes densely pilose, 2 mm. long; 
pappus nearly white, 5 mm. long. 
TYPE LOCALITY: Masaya volcano, alt. about 2000 meters, Costa Rica. 
DISTRIBUTION: Costa Rica. 
7. Vernonia hirsutivena Gleason, Bull. N. Y. Bot. Gard. 
alison 906: 
Stems herbaceous, appressed-pubescent; leaf-blades thin, ovate-lanceolate, 7-9 cm. 
long, 3-4 cm. wide, or the upper smaller, acute or short-acuminate, entire, obtuse to rounded 
at the base, papillose-pubescent or becoming scabrellate above, resinous-dotted and softly 
papillose-strigose to sericeous beneath, especially on the veins; petioles 3 mm. long; inflores- 
cence small, of a few sparingly branched cymes from the upper axils; bracteal leaves small 
and frequently none; heads 21-flowered; involucre nearly hemispheric, 6-7 mm. high; scales 
loosely imbricate, erect or somewhat spreading, the outer narrow, subulate, densely hirsute, 
the inner narrowly oblong, acuminate, pubescent or subtomentose at the tip; achenes hirsute; 
pappus white, the bristles 6 mm. long, flattened and twisted, the scales broad and conspicuous, 
1 mm. long. 
TYPE LOCALITY: Yot Tzonot, Yucatan. 
DISTRIBUTION: Yucatan. 
8. Vernonia ctenophora Gleason, Bull. Torrey Club 
46: 243. 1919. 
Stems herbaceous, at least 4 dm. high, thinly pubescent and resinous-dotted; leaves 
sessile or with short petioles, the blades thin, ovate-lanceolate, acuminate, entire, obtuse or 
