514: PROCEEDINGS OP THE AMERICAN ACADEMY 



the two genera mentioned. In Boisduvalia we have also the calyx- 

 lobes never reflexed, and the capsule few-seeded. The supposed affinity, 

 however, of Godetia to JEpilobium, on account of the analogy of the 

 crest upon the seed of the one to the coma in the other, as held by 

 Spach and admitted by Lindley, can scarcely be sustained. 



A few new species are added, and some that had been reduced are 

 restored ; but the total number is little larger than that given by Torrey 

 & Gray. 



Synopsis of Species. 



§ 1. EUCENOTHERA. Stigma-lobes linear, elongated (very short in (E. lini- 

 folia) ; calyx-tube linear, slightly dilated at the throat; petals never lilac or purple; 

 filaments nearly equal ; anthers linear, attached at the middle. 



* Annual or biennial, caulescent ; flowers erect before open- 

 ing, yellow, the calyx tips free ; capsules sessile, coria- • 

 ceous, straight or nearly so ; seeds in two rows in each 

 cell. 

 ■ j Flowers in a leafy spike ; capsules oblong, slightly attenu- 

 ate above ; seed with more or less margined angles, 

 nearly smooth. 



Rather stout, erect, 1-5° high, usually simple ; calyx-tube 



]-2.J'long; capsule | - 1' long 1. (E. biennis. 



Thick and woody at base, 5- 10° high ; calyx-tube 3-5' 



long; capsule 1 -2' long 2. (E. Jamesii. 



1 1 Flowers in a leafy spike ; capsule linear ; seeds not mar- 

 gined, minutely tuberculate. 



Spike rather loose and few-flowered ; calyx sparingly vil- 

 lous ; petals roundish 3. (E. heterophijlla. 



Spike elongated, dense; calyx silky-canescent ; petals 



rhombic-ovate 4. <E. rhombipetala. 



t t t Flowers axillary ; capsules linear. 



Pubescence dense, short, appressed; leaves J — 1' long; 



capsule J— 1' long, silky; seeds smooth; fls. small . 5. (E. humifusa. 



Pubescence longer and more spreading on the calyx and 

 ovary; lvs. J-2J' long; capsule 1-2' long; seeds ob- 

 scurely pitted ; fls. large 6. (E. Drummondii. 



More or less strigose-pubescent, calyx and ovary subvil- 



lous; capsule 1 - l£' long; seeds strongly pitted . . 7. (E. sinuata. 



* * Annual or perennial, caulescent ; flowers nodding in the 

 bud, white turning rose-color ; capsules sessile, mostly 

 linear ; seeds in a single row. 



Annual or biennial ; calyx-tips not free, throat naked ; 



seeds oval, not angled, finely pitted .... 8. (E. pinnatifida. 



Annual ; calyx very villous ; the tips not free, throat 

 naked ; seeds smooth, lance-linear .... 9. (E. trichocalyx. 



