February 29, 1912 7 



1. Style hooked, bent, or articulated, the terminal portion often 



deciduous: leaflets coniuionly cleft, with narrow divis- 

 ions [Cilmtae) 2 

 Style neither hooked, bent, nor articulated, usually wholly 

 persistent; leaflets mostly toothed to lobed, hardly cleft 

 ( Trijlorae) 6 



2. Basal leaves long and loosely clustered; leaflets mostly 



20 mm. or more in length 3 



Basal leaves short and densely clustered; leaflets mostly 

 15 mm. or less in length 5 



3. Cal\ X bractlets cleft into narrow divisions E. ciliata ornata 

 Calyx bractlets entire, rarely toothed 4 



4. Leaflets well separated, rarely touching E. dissecia 

 Leaflets more crowded, more or less overlapping 



E. ciliata^ E. flavula, E. australis 



5. Bractlets shorter than the calyx lobes; petals conspicuously 



red-purple tipped E. campanulata 



Bractlets more conspicuous; petals mostly yellow 



E. brevi folia 



6. Basal leaves long and loosely arranged; leaflets mostly over 



20 mm. long 7 



Basal leaves short and condensed; leaflets mostly under 



15 mm. long 11 



7. Leaflets not deeply lobed; petals often red-purple tipped or 



margined 8 



Leaflets rather deeply lobed; petals yellow with little or no 



red 9 



8. Leaflets broadly cuneate, the lateral lobes toothed and more 



spreading E. trifiora 



Leaflets evidently narrow, the lateral lobes simple and 



nearly parallel E. affims 



9. Leaflets sparsely appressed pilose, not prominenth' ciliate- 



cuspidate lo 



Leaflets noticeably villous-pilose, minutely glandular dot- 

 ted, the teeth prominently ciliate-cuspidate E. tridentata 



10. Calyx bractlets, calyx lobes and petals nearly equal in 



length [Hartmajt joo) 



Calyx bractlets surpassing the nearly equal petals and calyx 



lobes E. arizonica 



11. Leaflets broadly cuneate, lobed, the lobes toothed 12 

 Leaflets more narrowly cuneate, toothed but not lobed 13 



12. Leaflets with lobes and teeth very broad; densely soft vil- 



lous-canescent; plumes about 30 mm. long E. canescens 



