514 ONAGRACEJE. Eulobus. 



men are not in a good state for examination, and we do not observe the 

 smaller stamens. 



t t Capsules linear, on short pedicels : seeds numerous : flowers axillary. 



3. G. cfes'nnn: clothed throughout with a minute soft spreading pubescence ; 

 stem ascending, much branched from the base ; leaves linear-spatulate, 

 short ; flowers (minute) axillary throughout the branches ; segments of the 

 calyx about the length of the petals ; longer stamens one-third shorter than 

 the petals; the 4 alternate ones ver^- short, with minute sterile anthers; 

 capsules twice the length of the leaves, linear, obtuse, attenuate into a short 

 pedicel. — (Enothera (Trichomeria) ceesia, Nutt. ! mss. 



Oregon, on dry open plains near Wallawallah, Nuttall ! — Stems about a 

 foot high, producing flowers from near the base to the summit : pubescence 

 soft and dense. Leaves of the branches 3 lines long. Capsules 6-8 lines 

 long, slightly torulose, tapering to the base. Seeds linear-oblong, very 

 small. 



4. G. racemosum: glabrous, branching from the base; the branches 

 mostly simple, ascending ; leaves short, linear, rather obtuse ; flowers (very 

 minute) axillary throughout the branches ; segments of the calyx about the 

 length of the petals, slightly exceeding the longer stamens ; shorter stamens 

 with minute sterile anthers"; capsules'longer than the leaves, linear, rather 

 obtuse, straight or slightly curved, tapering at the base into a very short 

 pedicel. — (Enothera (Trichomeria) racemosa, Nutt. ! mss. 



Elevated plains of the Rocky Mountains near Black-Foot River, Nuttall! 

 July .—Stems 4-8 inches high. Capsules half an inch long, very slender, 

 minutely torulose. — Resembles the preceding. 



/ 5. G. Nuttallii: glabrous, stem erect, branching; leaves linear, rather 

 acute; flowers (minute) axillary, but mostly towards the extremity of the 

 branches ; segments of the calyx as long as "the petals and style, rather ex- 

 ceeding the longer stamens ; the alternate stamens very short, with minute 

 sterile anthers; "capsules shorter than the leaves, linear, slender, 2-grooved, 

 rather acute at each end, slightly pedicellate, at length often curved. — 

 CEnothera (Trichomeria) micrantha, Nutt. ! mss., not Gayophytum micran- 

 thura. Hook. Sf Am. 



Rocky Mountains, Nuttall! Douglas .'—Stem 6-12 inches high, branching 

 above. Leaves 1-2 inches long. Capsules 8-10 lines in length, minutely 

 torulose, slender, subsessile, very many-seeded. 



5. EULOBUS. Nntt. mss. 



Tube of the calyx scarcely produced beyond the ovary ; limb 4-parted, 

 reflexed ; the very short campanulate base invested with a thickened disk. 

 Petals 4, rhombic-obovate. Stamens 8, inserted into the margin of the disk, 

 shorter than the petals, the alternate ones much shorter : filaments filiform : 

 anthers oblona;, fixed below the middle, at length versatile; those of the 

 shorter stamens roundish and much smaller, fixed by the middle. Ovary 

 linear-filiform, 4-celled : style somewhat exceeding the longer stamens : stig- 

 ma rather large, capitate. Capsule linear, very long and narrow, 4-sided, 

 nearly sessile, straight, refracted, imperfectly 4-celled ; the dissepiments very 

 thin and narrow, adherent to the valves. Seeds very numerous, obovate- 

 oblong, naked, erect. — A rather large virgately branched annual herb, with 



