1921] 
PAYSON—MONOGRAPH OF THE GENUS LESQUERELLA 
2. Ovules E! *; each cell; coarse New Mex- 
ioan spocie. BS. Gs Boe eas ok we vt 
B. deg per ‘al. 
I. Pe dicels uniformly recurved; pods more or 
less pende 
1. Rays of pM united only at their 
as 
Rays of stellae united for about one- 
"half their le ngths 
II. ee straight, simply curved upwards 
id, not v nici recurved; 
ds emis 1 to 
1. Fruiting erp ae subcorymbose 
ree eee Cn v.e 9 9» Via» 
< E ndi clustered near the apex of 
* Styles ye or exceeding the 
y ‘Radical leaves narrowly ob- 
lanceolate .............- 
t cal leaves ovate 
** Styles much shorter than the pods. 
Petiole — Mein stout; 
berry to nland 
Lebredoe aa ipsa ees 
tt Petiole ‘Gales native to 
Newfoundland and Anti- 
2 Fruiting Infor M elu 
asa 
* Pods stipitate, 
M ETE. o Bet es 
** Pods sessile. 
TEUS Li dr ag nar- 
0. vules 2; stems many, 
Tk US E a ME osa 
Cvules d "us 2; 
stems 
|| Pediosls simply curved, 
sigmoid. 
. Styles usually 
equalling the pods 
n le a P PRA. 
pas 
II Pedioels sigmoid, on 
ually horizontal. 
Pp 
20. 
~ 
» 
E 
~ 
~ 
eerte od: 
ra 
ys un- 
branched.. 
Leaves en- 
tire; rays 
branched. 
n. ccn scale- 
united nearly 
or quite to 
their apices. 
12. 
29. 
16. 
143 
L. aurea 
L. purpurea 
L. pueblensis 
L. Engelmannii 
L. ovalifolia 
L. arctica 
. L. arctica 
var. Purshii 
L. Lindheimeri 
L. angustifolia 
L. Fendleri 
L. arctica 
L. argyraea 
L. pinetorum 
L. Schaffneri 
