[Vol. 8 
144 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
tt Madin leaves abruptly nar- 
* di at base; pods kaem 
b. Pods Te a aac 
Pedicels u 
ee a annu 
II. Plants ramm h pjeska T more than 
*$»4445,. Cee vases ewe 
1. Basal leaves linear or oblanceolate. 
ed tenen stout; fruiting racemes not 
I es <5 5 hs ao oda s sake 
v" ri slender; fruiting racemes 
usually secun Nov s ons 
Basal leaves oval or suborbicular. . 
B. Pedic Seon, straight or uniformly curved 
up 
I. Plants annual. 
ods globose; stems erect; terminal 
ud not inhibited. 
"d e sigmoid; stems usually 
e Pedisels straight; stems pie 
2. Pods compressed at the stems 
ore rosette plants........... 
ib NE perenn 
Radical Leaves linear or narrowly ob- 
* Fruiting inflorescence raised con- 
spicuously above the leaves. 
n well-developed plants, 
pods clustered at apex of 
stem 
0 Radi cal — thick, 
usually involu 
Ra eaves rae 
n» Stems more slen- 
eet n t n 
= 
| Stems with one or 
I Il 
tt In well-developed plan 
fruiting inflorescence xd 
is] 
un 
gated. 
0. Pods sessile........... 
Pods stipitate......... 
inflorescence scarcely 
raised cab the cra leaves. 
1 Pubescen TM rer er 
tt Sr terangi osely nd. 
2. Radicalleaves so tt soma spatulate, 
or suborbicula 
" "Pods distinctly stipitate when ma- 
ure, oblong 
** Pods sessile. 
1 Rays of thestellaeunbranched 
i ys of the stellae conspicu- 
ously forked. 
Pods By pet aigon elon- 
mature at 
east twice as long as 
wide. 
à *-6$ 06 Ves OBER Ad eee 
30. L. pruinosa 
20. L. aurea 
21. L. argentea 
22. L. arenosa 
23. L. macrocarpa 
28. L. Palmeri 
85. L. globosa 
ól. L. Cusickit 
38. L. intermedia 
89. L. — 
39a. L. arizon 
var. aadi 
40. L. alpina 
42. L. Garrettii 
41. L. condensata 
41a. L. condensata 
var. laevis 
46. L. latifolia 
13. L. Berlandieri 
