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V. Lepipapitoa, Paniculatae dichotomae 
Inflorescence paniculate, dichotomously branched, the corre- 
sponding internodes of equal length. One species. 
55- VERNONIA MENTHAEFOLIA (Poepp.) Lessing, Linnaea 4: 
182 
Lupatorium menthaefolium Pépp. in Sprengel, Syst. Veg. 3: 
412. 1826. 
Vernonia Grisebachié Sch.-Bip. Jour. Bot. 1: 231. 1863. 
oody, erect, 1-2 m. high, minutely puberulent; leaves 
thin, bright-green, ovate-oblong, 5-10 cm. long, 1.5-3.5 cm. wide, 
a 
glabrous and paler green beneath; petioles 1-1.5 cm. long; bracteal 
leaves similar but smaller; inflorescence loose, pyramidal, 2-3 dm 
wide, dichotomously branched; heads 11-18-flowered, on pedun- 
cles 3-5 mm. long; involucre broadly pe eae closely imbri- 
cated, 4-5 mm. high; scales adnasasi puberulent, the outer apa 
ovate, obtuse or acute, the inner oblong-lan ese rounded 
cuspidate; achenes 3 mm. long, aay pubescent on the iow 
ribs; pappus flavescent or nearly white, 6 mm. long, the outer 
series short, indistinct. 
Type locality and distribution: Cuba. 
This, the single species of the subsection, is distinguished not 
only by the structure of its inflorescence, but also by its distribution. 
It is the only paniculate form in the West Indian region, with the 
single exception of V. zzsadarzs, and is doubtless phylogenetically 
distinct from all the remaining Paniculatae. The exception men- 
tioned is, as has been shown, of Mexican origin. Schultz’s V. 
Grisebachti was intended to include forms with larger heads and 
more numerous flowers, but from his description cannot be distin- 
guished from authentic specimens of V. menthaefolta. 
VI. Lepmapioa, Paniculatae umbelliformes 
Branches of the panicle mostly aggregated or separated only by 
shortened internodes; peduncles approximately uniform in length, 
the inflorescence consequently appearing subumbellate. The heads 
form regular rounded clusters which are in turn united into large 
pyramidal, hemispheric or depressed inflorescences. The subsec- 
tion is a very natural one; its nine component species are closely 
interrelated, and are all endemic to the mountain regions of Mexico. 
