134 Contributions from the Gray Herbarium 
s. Leaves 6.5-10 mm. wide; achene rather 
RNAI SN oe cpa ei wip bom eee 96. V. oligodonta. 
z peg Z 7-3.1 em. wide; achene densely 
RA eagle whisk ois 4 6 ye 105. V. Hilairei. 
ti: Giakies Sonia 
Leaves shortly eee or rounded-cuneate at : 
ase; Bolivia and Chile salina Goilty heres cone 92. V. pazensis. 
t. Leaves acuminate vr base; Brazil, u 
u. Stem densely strigillose; ; “signa "dsaslione. 
105. V. Hilairet. 
u. Stem not donecly strigillose; leaves lepi- 
dote above 
v. Phyllaries <ntonas and _hispid-ciliate; 
eke anay 5.2 mm. lo ong, er is 
lous; awns 1.2 mm. lon ng....100. V. nudibasilaris. 
v. Phyllaries geese hispidulou isk- : 
co po 4mm. long, pi ine awns 
0.6 m AM iiss Gag ccna awe 
h. Leaves lanceolate to ovate or ovate-oval, less than four 
times as long as wide, w. 
w. Leaves green and sparsely pubescent beneath, z. 
x. Leaves sessile, cordate and amplexicaul at base. 
111. V. breviflosculosa. 
xz. Leaves narrowed at base not clasping 
y. Stems decumbent ph sear 2 not ; 
distinctly Ghar 8 Oe SR ee 95. V. fusiforms. 
y. Stems erect, Saely decumbent; phyllaries his- 
He id- sere ose-ciliate and more or less hispid- 
2. len strongly venose and venulose be- 
neat 
ae cy kas 86. V. Lehmannii. 
ce. Licved Spine or lance-oblong, entire. : 
V. trucillensis. 
oe. sate don lance-ovate to ovate or oblong- 
ceolate, almost always toothed, 
dd. Leaves ee (7.5-11 em. long, 2.5-4 
ide), lanceolate or lance- 
“ 
ovate ¥ 
dd. Leaves smaller (3.3-6.5 em. long, 
oe em ieee ovate, merely V. Pflanaii 
te, scarcely vein neath 4 
w. Leaves distinctly wale and oauatie rtuer densely 
pubescent beneath, ee 
ee. Siete sessile, eordeta: and amplexicaul at base. 
111. V. breviflosculosa. 

