498 ONAGRACEiE. CEnothera. 



July. — Stems 10-15 inches, or sometimes 2 feet high; the whole plant com- 

 monly more or less canescently puberulent, at least when young. Leaves 

 sometimes narrowly linear, sometimes linear-oblong, tapering at the base 

 and slightly petioled. Flowers at least twice the size of those of OE. pu- 

 mila ; the fruit corymbose at the summit of the stem or branches, not in an 

 elongated spike like that species. 



18. CE. chrysantha (Michx.) : biennial? pubescent; stem ascending; 

 leaves lanceolate, rather obtuse, attenuate at the base, entire or obscurely 

 denticulate, the radical ones obovate-spatulate ; flowers (small) in a rather 

 crowded spike ; tube of the calyx as long as the ovary and longer than 

 the segments; petals (orange-yellow) broadly obovate, emarginate, longer 

 than the stamens ; capsules (nearly glabrous) clavate-oblong, distinctly pedi- 

 celled; the alternate angles very narrowly winged. — Michx. ! jl. 1. p. 225; 

 DC. I. c. OE. riparia, Lehm.! 'in HooTc.fl. Bor.-Am. 1. p. 212, not oi Nutt. 

 Kneiffia clirysantha, Si^ach ! I. c. 



Canada! from Hudson's Bay, Michaux .' Michigan! &c. Near Niagara 

 Falls, Mr. John Carey! June-July. — Stem a foot or more high, slender, 

 purplish and glabrous towards the summit. Flowers usually rather smaller 

 than in (E. pumila, more crowded in a terminal somewhat pedunculate 

 spike; the capsules less clavate, &c. — The lower capsules of CE. pumila are 

 not unfrequently pedicellate ; but in this species they are uniformly so, and 

 the lower pedicels are often as long as the capsules themselves. Michaux 

 describes the capsules as sessile ; but Mr. Spach remarks that they are pedi- 

 cellate in the plant of his own herbarium. (E. pusilla, Michx. may also 

 belong to this species, but Michaux's specimens want the flowers. 



19. CE. 2}umila [hinn.): biennial, minutely pubescent ; stem ascending; 

 leaves lanceolate, mostly obtuse, entire, acute or attenuate at the base, the 

 radical ones obovate-spatulate; flowers (small) in a loose elongated leafy 

 spike, the apex nodding before expansion ; tube of the calyx shorter than the 

 ovary and about the length of the segments ; petals (pale yellow) obcordate, 

 scarcely longer than the calyx-segments and stamens ; capsules (glabrous) 

 oblong-clavate, almost sessile ; the alternate angles narrowly winged. — Linn. ! 

 spec. (cd. 2) I. p. 493; Bot. mag. t. 335; Pursh! Jl. 1. p. 262; Seringe! 

 in DC. jyrodr. 3. p. 51 ; Hook.ji. Bor.-Am. 1. p. 212. Kneifl[aa pumila, 

 Spach! Onagr.p. 48. 



13.? jJusilla: smaller and more pubescent; cajisules a little shorter. — (E. 

 pusilla, Michx. ! Jl. 1. p. 225. (in fruit only.) 



Dry fields, Canada (Hudson's Bay!) and Northern States! to the moun- 

 tains of South Carolina! June-July. — Stem commonly simple, 6-12 inches 

 high, minutely puberulent, as also the calyx, capsules, and sometimes the 

 young leaves ; the latter slightly petioled. In fruit the leafy loose spike is 

 often 6-8 inches in length, the flowers sometimes commencing near the base 

 of the stem. 



20. CE. Spachiana : annual, minutely pubescent ; stem simple or branch- 

 ing from the base ; leaves lanceolate or linear, obtuse, entire, attenuate at the 

 base; flowers (rather small) axillary; tube of the calyx shorter than the seg- 

 ments ; petals nearly entire, much longer than the calyx-segments and sta- 

 mens ; capsules (canescently pubescent) obovate-clavate, the alternate angles 

 carinate or slightly winged towards the summit, tapering to a slender base, 

 nearly sessile. 



Texas, Drummond! — In Sir Wm. Hooker's herbarium this plant is la- 

 belled "Blemnoderma Drummondii, Spach''' ; but we know not where it is 

 described, and there is no genus of that name in Mr. Spach's Monagraphia 

 Onagrearum. It resembles Q3. pumila, and is about the same size, although 

 the flowers (apparently yellow) are larger, and the fruit resembles that of CE. 



