(170) 
+ West — species. FRUTICOSAE. 
Leaves ovate or broadly oblong. 
Involucre sateen ee leaves coriaceous, aoa 
V. fruticosa. ~ 
a V. leptoctada. 
Involucre cylindric ; leaves flat. 24. V. Sagraeana 
— narrowly oblong to oblong-linea: 
rincipal scales obtuse to as ad mucronate. 
Leaves scabrellate above, obtuse or rounded at the - ase. 
25. V. inaeguiserrata, 
Leaves — ones above, narrowed from shove the middle to a 
truncate 26. V. Sprengeliana, 
Principal scales ae acute or acuminate. 
Leaves thin, pilose beneath ; scales densely age aia 
27. nal 
Leaves thick, nearly glabrous beneath ; scales acachnoid-eiliate. 
. V. Valenzuelana. 
tt Mexican dates eee 
Inner scales obtuse or rounded at th 
nner scales constricted below a “dilated tip 2-3 mm. 
35+ y ae 
Inner scales narrowed to a tip 1 mm. wide. 36. V. Seemanniana. 
Inner scales sharply acuminate. 37. V. vernicosa. 
II. SCORPIOIDEAE REDUCTAE 
Leaves 5~9 cm. long, a al on both sides. 38. V. depidota. 
Leaves 3.5 cm. long or less. 
Leaves broadest a or near the middle, not conspicuously attenuate at 
bas 
— nae 5 mm. long. 39. V. complicata. 
lades 1-2 cm. long 40. V. arctata, 
Leaves oer A t much oe ‘the middle, long-attenuate at base. 
Leaves broadly obcordate. 41. V. obcordata. 
Leaves spatulate. 42. V. bahamensis. 
III. SCORPIOIDEAE AGGREGATAE 
Leaves glabrou: 
ales in about 1oseries ; involucre 8 mm. high. 43. Vi duxtfola. 
Scales in about 6 series ; eel nas 5mm. high. 44. V. montana. 
satis baaetiees at least ath. 
es glabrous abov 45. V. yunquensis, 
ape softly ree on both sides, 46. V. Thomae. 
IV. ScoRPIOIDEAE APHYLLAE 
* West Indian species. HAVANENSES. 
Lower naa with peduncles equaling or longer than the involucre; leaves 
remotely toothed. 47. V. havanensis. 
Lower aoe sessile ; leaves sharply serrate. 48. V. pallescens, 
