[Vol. 8 
142 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
SECTION 3. EULESQUERELLA Wats. 
§ 3. EuLESQUERELLA Wats. in Engler & Prantl. Nat. Pflanzen- 
fam. III. Abt. 2: 1888. 1891. 
Lesquerella proper. Wats. Proc. Am. pre 23: 251. 1888; 
Wats. in Gray, Syn. Fl. N. Am. 1°: 117. 
Annuals or perennials, frequently ie oe rosettes ; 
terminal bud developing or inhibited; stems usually unbranched ; 
radical leaves pinnatifid or entire; P— usually entire; 
filaments rarely dilated at the base; pods glabrous or stellate, 
typically inflated, never flattened conspieuously at right angles 
to the septum, sessile or stipitate; ovules usually few, funiculi 
attached to the septum for one-half their lengths more or less; 
seeds rarely winged. Species 5-52. 
KEv TO THE SPECIES 
A. Cauline leaves auriculate 
De sonspicuouely | hirsute at the base; petals 5-7 
2. mrt ror eT TRES ó. [^ mk m 
b. State 4 scarcely hirsute; petals iae 1 em. long.. 6. grandiflora 
B. Cauline leaves narrowed at the bas 
a. Pods gla n" 
ants an 
Pedicels various but not uniformly re- 
curved, with pods pendent. 
1. Pods sessil 
* Ovules 5 or more in each cell; 
stems rather sto 
+ Fruiting somit —— 7. L. densiflora 
tt Fruiting inflorescence lax. 26b. L. gracilis 
var. sessilis 
* Ovules 2 in spr cell; stems slender. 24. L. angustifolia 
2. Pods definitely stipitate. 
Pe p e iai or simply curved, 
Li Pod: okai or r with- 
t a shoulder e base.. 26. L. gracilis 
tt Pods T maea ea dh a 
shoulder at the base....... 26a. L. gracilis 
var. repanda 
"- Poo "eo aid sigmoid, usually 
1 Radical — lyrately pinna- 
tifid, wi umerous acute 
pue Pere over 1 mm 
e bI wratardwoweses 25. L. Lindheimeri 
tT — leaves entire or with 
p s; stipe less than 1 
bu E doar aaa Stew LT. 27. L. Gordonii 
II. Pedicels atilornity recurved; pods more or 
less penden 
1. Files +6 in each cell; Texas species. 
* Flowers yellow................. 18. L. recurvata 
xk 
Flows whi E PEL reus 19. L. pallida 
