ONAGRACE^. (EVENING-PRIMROSE FAMILY.; 105 



Var. lavandulsefolia, Watsou. Taller, i»ul)C'S(ent throughout : leaves 

 mostly linear and shorter: calyx-segiiieuts less attenuated ahove. — (A\ /u- 

 vandulcefolia, Terr. & (Jray. From Kansas and Colorado to Mexico. 



14. CE. serrulata, Nutt. Leaves linear to lanceolate, denticulate: t/ie 

 free cal/jx-tips short: capsules 9 to 15 lines long. — From New Mexico and 

 Texas northward to British America. 



§ 4. Stigma capitate : calijx-tube obconic or short funnelfurm : flowers in croudtd 

 bracteate or leaf// spikes: anthers oblong: capsule linear^ sessde, attenuated 

 aboi'e, curved and contorted. 



15. CE. Strigulosa, Torr. & Gray, var. pubens, Watson. Pubescewe 

 hirsute and spreading, sometimes nearly smooth : petals 1 to 2 lines long, vel- 

 low, usually turning red : capsule verg narroir/g linear, often short-j»edi(elle<l — 

 Includes (E". (/e?i^a/«, Torr. «& Gray. From the Wasatch wf.-<tu;inl through 

 the Pacific States. 



16. CE. andina, Nutt. Dwarf, 1 to 3 inches high, canescentlg pubendent: 

 flowers a line long, yellow : capsule fusiform, 3 to 6 lines long. — From E. 

 Oregon to Montana, Wyoming, Nevada, and Utah. 



§ 5. As in § 4, but capsules linear to clavate, pedicelled and obtuse : caulescent: 

 flowers in loose, naked racemes : seeds oblong-lanceolate. 



17. CE. seapoidea, Nutt. Pubemlent or nearlg glabrous: leaves low on 

 the stem, usually lyrately-pinnatifid : calgx-tips not free : capsule 4 to 12 liws 

 long. — From W. Wyoming and S. Idaho to S. Utah and Colorado. 



18. CE. brevipes, Gr. Like the last, but stouter: villous, not |)ul)eru- 

 lent : calgx-ttps free, thick: capsule I to 3 inches long. 



Var. parviflora, Watson. Of a much more branching habit : the leaves 

 more distinctly pinnate : inflorescence more slender : flowers pale yellow, the 

 2 to 3 lines long. — Am. Nat. ix. 271. S. W. Colorado and S. Utah. 



5. CLARK I A, Pursh. 



Petals purple or violet. Anthers oblong or linear. Stigma with 4 broad 

 lobes. Capsule linear, attenuate above, somewhat 4-angled. Seeds angled 

 or margined. — Annuals, with erect brittle stems : leaves on short slender 

 petioles, the uppermost sessile : flowers showy, nodding in the bud, in terminal 

 racemes. 



1. C. pulchella, Pursh. Leaves linear-lanceolate to linear : petals Z-lolted, 

 attenuate to a long claw ichich has a spreading tooth on each side: perfect sta- 

 mens with a linear scale on each side at base ; alternate stamens rudimentarif 

 andflliform: capsule S-angled. — Bitter Root Valley, W. Montana, to Idaho. 

 Oregon, and Washington. 



2. C. rhomboidea, Dougl. Leaves oblong-lanceolate to oblonn-ovate : pet- 

 als entire, rhomboidcd , with a short broad claw which is often broadly toothed : 

 anthers all perfect ; filaments with hairy scales at the base : capsxde A-iingbd. — 

 From the Wasatch to California and Washington. 



6. STENOSIPHON, Sp:uh 



Tube of the calyx filiform or almost capillary, much prolonged beyond the 

 ovary, recurved or declined after flowering. Petals unguiculate, unc<iual. 



