ONAORACEifi. 61 



Annual: stems round: leavea mostly alternate: petals obcordate 13, 13, 14 



1. E. spicatuin, Lam. Simple stem often 5 or 6 ft. high: flowers spicate. 



2. E. latifolium, Linn. Shorter, less erect, often branching: style glabrous. 



3. E. obcordatum, Gr. Petals obcordate, spreading, rose-color. Alpine. 



4. E. luteum, Pursh. Oregon to Alaska, 



5. E. Watsoni, Barbey. Hoary -pubescent, branching: petals narrow, obcordate. 



6. E. coloratum, Muhl. Erect, branched, puberulent: leaves mostly opposite. 



7. E. alpinum, L. Creeping, 2 to 6 inches high: flower-buds ovoid: anthers globose. 



8. E. origanifolium, Lane, Taller: large petals obcordate, purple to white. 



9. E. Franciscaniun, Barb. Stems 2 to 4 ridged: petals purple, emarginate. 



10. E. brevistylum, Barb. Similar: petals smaller, obcordate, pinkish. S.N. Mta. 



11. E. glaberimum, Barb. Glaucous: leaves connected at base: petals notched. 



12. E. paniculatum, Nutt. Often tall, very slender: leaves slender, often fascicled. 

 1.3. E. jocundura, Gr. Similar: panicles crowded: petals larger, 6 lines long, deep 



purple. 



1 4, E. zninutuin, LindL Leas than a ft, high: petals minute. 



5. GAYOPHYTUM, A. Jussieu. 



1. G. ramosissimum, T. & G. Diffuse, 6 to 18 inches high: capsule .3-5-8eeded. 



2. G. racemosum, T. & G. Less branched, more flowers, capsule 8 to 10 lines long. 



3. G. pumiliun, Watson. Smaller: capsule 6 lines long, the many seeds oblique. 



4. G. diffusum, T. & Q. Flowers 1^ to 3 lines broad, usually pink: capsules on 

 pedicels. 



6. ETTLOBUS, NuttalL 

 1. £. Califomicus, Nutt. Stout, 1 to 3 ft. high: petals 4 or 5 lines broad, yellow, 



7. CENOTHERA, Linnasns. 



§ Calyx-tube much prolonged beyond the ovary: st%gma4obes slender. 



Tall: flowers yellow, erect in bud: seeds in 2 rows in each cell 1 



Stems white: flowers white or purplish, 1^ or 2 inches broad: buds nodding 2, 3, 4 



Stemlesa: calyx-tube 2 to 4 inches long: capsule wing-angled 5 



§ 2. Calyx-tube jm/orrrL, stem-like above the ovary: stigma capitate: fiowera yellow, sessile 

 on the top of a rootatock in the axils of radical leaver. 



Nearly glabrous: leaves lanceolate to ovate: perennial 6, 7 



Canescently villous: leaves linear: capsule 4-winged: annual 8 



§ 3. Calyx-tube obconie or sliort-funnefjorm: stigma capitate: capsules narrow, sessile or 



nearly so, often contorted. 



Flowers axillary, yellow: capsule sharply 4-angled, usually contorted 9, 10, 11 



Flowers axillary, small, yellow: capsule obtusely angled, curved 12, 13 



