576 PROCEEDINGS OF THE AMERICAN ACADEMY 



Low ; capsule very silky, 8" long, very broadly winged ; 

 calyx-tube 1-2' long; petals h-l' long; seed not 

 crested 25. (E. Fremontii. 



Capsule 1-3' long, with wings nearly as broad ; calyx-tube 

 2-5' long ; petals 1-2^' long ; seeds strongly crest- 

 ed 26. (E. Missouriensis. 



Glabrous ; leaves ciliate, entire ; calyx-tube 4-5' long ; 

 petals 1 -1 y long 27. (E. tnicrosceles. 



§ 2. TARAXIA. Stigma capitate ; calyx-tube filiform, persistent ; anthers 

 attached at the middle, oblong ; capsules sessile, linear to ovate, winged above in 

 (E. grac'diflora ; seeds in two rows. Mostly perennial and acaulescent ; flowers yel- 

 low, erect in the bud. 



Subpubescent; lvs. deeply pinnatifid ; calyx-tube 3-6" 



long ; petals 3" long 28. (E. breviflora. 



More densely pubescent; lvs. deeply pinnatifid; calyx- 

 tube 1 -2^ long ; petals 5 - 7" long .... 29. (E. Nuttalli. 

 Glabrous; leaves lanceolate, nearly entire; calyx-tube 



1 - 3' long 30. (E. heterantha. 



Subpubescent; leaves often ovate, ciliate; filaments nearly 



equal; calyx-tube 1 -4' long ... .31. (E. ovata. 



Annual, small, hirsute ; leaves linear, ciliate ; calyx-tube 



| - H' long ; capsule truncately winged above, 5" long . 32. (E. graciliflora. 



§ 3. MERIOLIX. Stigma discoid ; calyx-tube more broadly dilated above ; 

 anthers oblong-linear, attached at the middle; capsule mostly sessile, linear-cylin- 

 dric. Mostly perennial, somewhat woody, with axillary yellow flowers, erect in 

 the bud. 



Leaves numerous, linear to lanceolate, mostly entire ; ca- 

 lyx-tube 1-2' long, the tips free and linear; petals 

 4-12" long; capsule 8-10" long .... 33. <E. Hartwegi. 



Shrubby and diffuse; lvs. ovate to oblong, 1-3" long; 



fls. smaller; capsules ^ long 34. (E. Greggii. 



Leaves linear to oblong-lanceolate, entire; calyx-tube 4- 7" 

 long, the free tips short ; petals 4 - 5" long ; capsules 



4- 7" long, subpedicellate 35. (E. tubicula. 



Leaves linear to lanceolate, denticulate ; the free calyx-tips 



short ; capsules 9-15" long 36. (E. serrulata. 



§ 4. SPHiERO STIGMA. Stigma capitate; calyx-tube obconic or short- 

 funnelform ; anthers oblong, attached at the middle ; capsule linear, sessile, attenu- 

 ated above, curved and contorted. Annuals or biennials, with usually crowded 

 bracteate or leafy spikes. 



* Flowers white or ^rose-colored, in a nodding spike ; cap- 

 sule narrowly linear, terete, much contorted. 

 i Canescently puberulent ; leaves oblanceolate or oblong- 

 lanceolate, entire or nearly so ; capsule 8-12" long, very 

 slender, scarcely thicker at base 37. (E. alyssoides. 



