(172) 
Leaves 3 mum. wide, revolute, lanate beneath. 71. V. Bolleana. 
Leaves 5-20 mm. wide, flat, glabrous or nearly so. 
72. V. crintta. 
** Heads smail or medium, o.4-1.2 cm. broad, few- to many-flowered 
t Scales rounded to short-acuminate at the apex 
{ Leaves of a linear type. 
Leaves scabrous above 
ome or all of the leaves revolute and narrowly linear. 
5. V. angustifolia. 
Leaves not revolute, linear-lanceolate to narrowly oblong. 
6. V. ries 
na. 
Scales arachnoid-ciliate. 
glabrous or sure! so. 67. Vi tex 
Scales 
Leaves glabrous or nearly so 
cales strongly eee or tomentose on the back. LINDHEIMERI- 
ANAE. 
Leaves revolute, densely white-woolly beneath. 
73. V. Lindheimert. 
Leaves flat, not white-woolly bene 
Involucre campanulate ; scales ne ciliate. 
74. ‘V. guadalupensis. 
scales densely arachnoid-ciliate. 
75. V. 
Involucre hemispheric ; 
. Reverchoniz. 
Scales glabrous or ciliate. 
eads 8~13-fiowered. 
Leaves narrowly linear, 1-2 mm. wide. 78. V. Letlermannt. 
wide or more. 
97. V. concinna, 
Leaves 5 mm, 
87. V. gigantea. 
alee 6-7 mm. high. 
volucre | mm. high. 
iddle. 
Heads rs -29-flowered. 
Involucre ate loosely and irregularly imbricated, 5 mm. high. 
eaves mostly basal, broadest above the mi 
8. V. Blodgettiz. 
Leaves scattered, broadest at or eres the middle. 
V. insularis, 
Involucre closely and regularly ee 
. V. marginata. 
s entire ; scales acumi 77 
Leaves serrate or dentate ; scales obtuse or acute. 
Involucre 8 mm. broad. 76. V. tenuifolia. 
80. -V. fasciculata. 
Involucre 5 mm. broad. 
tI Leaves lanceolate to ovate. 
Leaves glabrous, thinly pubescent or scabrous beneath 
-13-flowered 87. V. gigantea, 
Heads 18-29-flowered. 
Pappus purple. 
Involucre 4-5 mm. high. 
Involucre 6-8 mm. high, 
86. V. altissima, 
