192 ONAGRACE.E. (EVENING-PRIMROSE FAMILY.) 



late and only sinuate-toothed ; calyx-tips free, the tube slender (2 -4' long); 

 petals 6- 12" long; capsule ovate, - 1' long, strongly winged, net-veined. 

 Ivy. to Miss, and Tex., west to the Pacific. 



Var. (?) parvifldra, Watson. Flowers very small (1 -2' long), fertilized 

 in the bud and rarely fully opening ; fruit abundant, forming at length a 

 densely crowded hemispherical or cylindrical mass nearly 2' in diameter and 

 often 2-3' high. Plains of Kau. and Neb. 



-< i- Low caulescent perennials ; flowers axillary, yellow. 



13. CE. Missouriensis, Sims. Stems decumbent; pubescence short 

 and silky, closely appressed, sometimes dense or wholly wanting ; leaves thick, 

 oval to linear, mostly narrowly lanceolate (2-. r / long), acuminate, entire or 

 repand-dentieulate ; calyx-tube 2-5' long ; petals broad, I - 2|' long ; capsules 

 orbicular, very broadly winged (1 -3' long). Mo. and Kau. to Tex. 



14. CE. Fremontii, Watson. Hoary with appressed silky pubescence; 

 leaves linear, pointed, entire ; calyx-tube 1-2' long; petals i-1' long; cap- 

 sule hoary, oblong, narrowed at base, 9" long. Central Kan. 



2. Stigma discoid ; calyx-tube more broadly dilated above; anthers oblong- 

 linear; capsule mostly sessile, linear-cylindric ; perennial, somewhat woody, 

 with axillary yellow flowers. 



15. CE. Hartwdgi, Benth., var. Iavandulsef61ia, Watson. Stems 



numerous from a woody base, 3-6' high; leaves numerous, hoary-puberulent, 

 mostly linear, ^-1'long; calyx-tube 12' long ; capsule 8-10" long. Cen- 

 tral Kan. to Col. and N. Mex. 



16. CE. serrulata, Nutt. Slender (3-15' high), simple or branched, 

 canescent or glabrous; leaves linear to lanceolate (1-3' long), irregularly and 

 sharply denticulate ; calyr-tube broadly funnel form (2-4" long], strongly nerved ; 

 petals broadly obovate (3-4" long), crenulate; capsule 9-15" long. Wise, 

 and Minn, to Mo., Tex., and N. Mex. 



5. GAUKA, L. 



Calyx-tube much prolonged beyond the ovary, deciduous ; the lobes 4 (rarely 

 3), reflexed. Petals clawed, unequal or turned to the upper side. Stamens 

 mostly 8, often turned down, as is also the long style. A small scale-like ap- 

 pendage before the base of each filament. Stigma 4-lobed, surrounded by a 

 ring or cup-like border. Fruit hard and nut-like, 3-4-ribbed or angled, inde- 

 hiscent or nearly so, usually becoming 1-celled and 1 - 4-seeded. Seeds naked. 



Leaves alternate, sessile. Flowers rose-color or white, changing to reddish 

 in fading, in spikes or racemes , in our species quite small (so that the name, 

 from yavpos, superb, does not seem appropriate). 



* Fruit sessile or nearly so. 



1. G. bi6nnis, L. Soft-hairy or downy (3-8 high) ; leaves oblong-lanceo- 

 late, denticulate ; spikes wand-like ; fruit oval or oblong, acute at both ends, 2 - 3" 

 long, ribbed, downy. Dry banks, N. Y. to Minn., and southward. Aug. 



2. G. parvifldra, Dougl. Soft-villous and puberulent, 2-5 high ; leaves 

 ovate-lanceolate, repand-dentieulate, soft-pubescent ; spikes dense ; fruit ob/ong- 

 clavate, narrowed to both ends, 4-nerved, obtusely angled above, 3-4" long. 



Mo. to La. and westward. 



