162 Contributions from the Gray Herbarium 
é. fig dace squarrose 
Involucre Lactate: . slightly strigillose 
WilGlate ac Gpen ee ee 121. V. bracteata. 
e. iodine an  ibaiacies densely hispidu- 
(ee a as Se eek cee 122. V. quinqueremis. 
a. Leaves ovate or eal te oblong, f. 
f. Leaves green beneat 
g. Se see hs conspicuous spreading herbaceous tips; 
e only apparently none........ 114. V. arenaria. 
g- Phyllaries eeah. inco Sia er pene scarcely her- 
aceous tips; squamellae 6-10, normal, h. 
h. Heads numerous; lower leaves up a 8.5 em. broad. 
117. V. pilicaulis. 
h. Heads 1-5; lower sition 1.5-3 cm. wide 
i. Leaves strongly enulose, tuberotlatehiepa and 
strigillose; oainnon .3-3.2 dm. long. .123. V. oblongifolia. 
i. Leaves not venulose, merely strigillose; peduncles 
BB-TE5 ein: WON. Oe ee Be he 125. V. Gardner. 
f. Leaves pale or canescent ated 
j. Phyllaries very bluntly nel at tip, k. 
i; bevoiete 7-10 atin. high |) i hes Sal ee V. robusta. 
k. Involucre 1.2-1.4 em. Sauk 
j. Phyllaries acute or acutish, J. 
lL. — oblong to lanceolate, acute, entire, 
UI ask aie the a kane ee wees te 118. V. hypoleuca. 
l. Lites oval = ovate, crenate, serrulate, or 
suben m. 
m. Leaves el to oval, orig! crenate-serrate. .126. V. robusta. 
m. Leaves ovate or oval, not strongly crenate, n. 
Leaves oval-oblong; heads few (1-2)....... 115. V. ool 
n. Leaves ovate; heads numerous 116. 
114. V. arenarta Baker. Freely branched, about 1 m. high, 
the stem and branches leafy, densely hispid-pilose and hispidulous- 
pilosulous with somewhat tuberculate-based mostly spreading 
hairs, and more or less glandular. Leaves mostly alternate, ovate 
to ovate-oblong or the upper oblong, sessile by a rounded scarcely 
clasping base, acutish at the mucronulate apex, crenate-serrate, 
3-nerved and strongly reticulate beneath, above dark greet, 
tuberculate-hispidulous with subappressed hairs, beneath paler 
green, equally but subsparsely hispidulous-pilosulous with loosely 
spreading tuberculate-based hairs, the larger 6-7 cm. long, 2.7- 
3.3 cm. wide, the upper much smaller. Heads corymbose-panicled 
at apices of branches, about 3 em. wide, on peduncles 1. 5-5.5 cm. 
oR ee he ae eee ho 
phyllaries ovate to oblong-ovate, with Gem pale indurated glabrous 
or more or less tuberculate-hispid-pilose base and loosely ascending 
or spreading hispid-pilose and gland-dotted 3-nerved herbaceous 
acute apex, that of the inner phyllaries much longer than the in- 
