ZallS)o 
2. Leaves glandular-punctate, all sessile and 
similar in size; heads sessile in small glomerules; 
ray-flowers 6 to 20, more than the disc-flowers; 
receptacle fimbrillate. iiss ienseesesidec sees oO Praminitolia 
1. Inflorescence of axillary clusters or a terminal 
panicle. 
3. Inflorescence of axillary clusters. (Also, basal 
leaves small and soon deciduous, not forming 
rosettes; achenes hairy). 
4, Stem terete, glaucous when fresh; primary 
leaves lanceolate to narrowly oblong, sessile... S. caesia 
4. Stem angled, not glaucous; leaves ovate, 
contracted to a winged petiole. Expected 
(S. flexicaulis). 
3. Inflorescence a terminal panicle. 
5. Branches of panicle not recurved, panicle 
not nodding at summit; heads spirally arranged 
on the branches, not strongly l1-sided. 
6. Cauline leaves gradually decreasing in 
size upward; basal rosettes wanting. 
Expected (S. puberula, S. speciosa). 
6. Cauline leaves sharply decreasing in 
size upward; basal rosettes present, of 
large leaves. 
7. Tips of phyllaries strongly recurving. 
Expected (S. squarrosa). 
7. Tips of phyllaries appressed-ascending 
or slightly spreading. 
8. Leaves pilose or bristly on one 
or both surfaces. 
9. Rays silvery white; outer phyllaries 
with green tips and contrasting 
whitish bases and margins........... S. bicolor 
9. Rays yellow; outer phyllaries with 
LESS CONETASE...sccesessecccssseceee Se hispida 
