Blake — A Revision of the Genus Viguiera 41 
h. Leaves not Mac git 
Le 
Leaves lepidote above, mie ae. 
illose beneath. . 108. anchusaefolia. 
9: a merely strigillose and not h 
Vv 
e. 
gg tc 4-seriate, 6-8.5 mm. be stem 
glabrous below. ...119. V. amphichlora. 
heeulase: 5-seriate, ‘9-10 mm. gs: stem 
ee -agal 
e. Phyllaries squarrose 
i. Involucre oelst arty 6-6.5 mm. high. 
- atacamensis 
ce fag ios 4~5-seriate, generally higher, 4. 
. Leaves I-nerved; Arge 
nensis. 
j. Leaves 3-nerved (sometimes ‘appare ntly a 
aceshia through revolution of the m 
&. Head usually ve sino an numerous; leaves pale 
ath; Mexi .128.  V. linearis. 
k. Heads ioe (4-12); ayes green beneath; 
South America 
papa 4-seriate; pogo slightly 
ose and — apex. 
aa bractea 
Involucre 5-seriate; civllaies pvc 
hispidulous at apex. 
ag V. quinqueremis. 
c. Leaves lanceolate or broader, 
m. Leaves densely and eanescently 3 strigillose, tomen- 
ose, OF pu ous , 
n, Leaves densely Shacecenk-aahenikian beneath; 
Gasteeiaie ge. 4. V.mima. 
n. Leaves densely canescent-strigillose — 
gentina and Paraguay..137. V.tuberosa 
n. Leaves pilose-tomentose beneath, 0. 
0. 
0. ep son pilose or tomen 
permanently piloce-tomentose be- 
naeth: involucre 10-12 mm. high. 
. mollis. 
Leaves lena pr green beneath; involucre 
7- 
m. mores sop densely and canescently pubescent 
t 
p. Leaves Saeilky soe SN 
qg. Involucre 4~7-se 
‘. Phyllares strony Talaested to above the 
e, 
8. Phyilaries ane soonest herbaceous apex. 
Heads few (3-6); 
V. imbricata. 
Heads numerous; Mexico. 
128. YV. linearis. 
