[Vor. 3 
88 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
ШТ EE а in- 
cised-s ae 
tt Western | species. 
II diea of stem- 
leaves broad ...... 
2. pisi пу of lower leaves entire 
r near 
* Rays usually orange-red 
or saffron-eolored ...... 
** Rays lemon-yellow. 
tems closely ces- 
РОВ о неа 
tt yea x closely ces- 
pi 
| Upper leaves con- 
spicuously dilated 
ted into a broa 
amplexieaul base ... 
Y. Basal leaves NE. -ovate to Beggen 
often shallowly cordate and 
leaves more or less persistently wie. 
tomentulose, rarely glabro 
I. Pla the mountain of 
Arizona and Ne Mexico; 
achenes glabrous ............... 
к 
- 
. Plants of the low country and 
prairie throughout central United 
1 achenes usually hispid- 
д. Basal Ge oblanceolate (except in S. 
пада var. firmifolius), gradually 
n at the base, glabrous or 
Sub 
€ m! subglaueous ............ 
II. Plants not at all glaucous. 
LA —— rather densely and per- 
ently tomentose аб the 
Tun dS usually numerous. 
bo 
. Stems but slightly — 
at the base; heads compar 
tively few 
* Head 5 to 9 mm. high; 
stems not flexuous. 
{ Eastern species ...... 
tt igre species ....... 
** Heads 10 to 13 mm. high; 
stems т flexuous ..... 
Сл 
° 
су 
i 
60. 
e 
к 
су 
» 
съ 
= 
су 
5 
68. 
S. Crawfordii 
S. quaerens 
S. platylobus 
S. crocatus 
8. aquariensis 
S. dimorphophyllus 
S. Farriae 
S. Hartianus 
S. plattensis 
S. Willingii 
8. Smallii 
8. pauperculus 
S. flavovirens 
S. multnomensis 
