ONAGRACEAE (EVENING-PRIMROSE FAMILY) 159 



A. Petals 3-lobed, their claws long; alternate stamens rudimentary; capsule 8-angled; 



pedicel 4-6 mm. long. E. C. pulchella 



AA. Petals entire, their claws short, wide; all stamens pollen-bearing; capsule 4- 



angled; pedicel 1-3 mm. long. C. E. C. rhomboidea 



GODETIA (FAREWELL-TO-SPRING) 



Annual; stems erect. Flowers showy, in racemes or spikes. Calyx 

 tube obconic or shortly funnelform, deciduous. Petals 4. Stamns 8, 

 4 shorter. Capsule 4-celled, 4-sided, somewhat coriaceous, loculicidal. 

 (Honor of M. Godet, a Swiss botanist.) 



A. Flowers in a narrow compact spike, erect in the bud; capsule ovate to oblong; 



seeds in i or 2 rows; leaves close together. 



B. Tips of the calyx lobes not at all free in the bud; sides of the capsule not 2-ribbed; 



seeds in 2 rows in each cell. W. G. purpurea 



BB. Tips of the calyx lobes slightly free in the bud; capsule 2-ribbed at least on the 



alternate sides; seeds in one row in each cell. 



C. Flowers in a short simple spike. W. G. lepida 



CC. Flowers in many short lateral spikelets. W. G. albescens 



AA. Flowers in a loose spike or a raceme, nodding in the bud; capsule linear; seeds 



in i row; leaves distant. 

 D. Capsule sessile; calyx tips mostly free. 

 E. Petals 6-12 mm. long. 

 F. Ovary and capsule villous; capsule 2-ribbed at the alternate sides. W. E. 



G. quadrivulnera 

 FF. Ovary and capsule puberulent; capsule nearly flat at the sides. U. 



G. tenella 



EE. Petals 18-30 mm. long. W. C. G. viminea 



DD. Capsules with pedicels; calyx tips mostly not free. 

 G. Petals 6-12 mm. long; pedicel of capsule 1-4 mm. long. W. E. 



G. epilobioides 



GG. Petals 12-30 mm. long; pedicel of capsule 4-15 mm. long. 

 H. Plant minutely puberulent; stem somewhat branched above. 

 I. Anthers sparingly hairy, large, the terminal part sterile and often hooked. W. 



G. caurina 

 IE. Anthers glabrous, small, fertile to the tips. W. C. E. 



G. amoena (HERALD-OF-SUMMER) 

 HH. Plant hispid with short spreading hairs; stem simple. W. G. hispidula 



ONAGRA (EVENING PRIMROSE) 



Annual or biennial; stems 3-15 dm. high, coarse. Leaves alternate. 

 Flowers yellow, changing to pink in age, nocturnal, erect before opening. 

 Calyx tube more or less prolonged above the ovary, deciduous; calyx 

 segments 4, reflexed. Petals 4, equal, sessile, obcordate to obovate. 

 Stamens 8, equal; anthers versatile. Stigma deeply 4-cleft. Seeds in 

 2 or rarely more rows, prismatic-angled. (Said to be from Gk. onagros = 

 the wild ass, whose ears the leaves resemble.) 



A. Petals 1-2 cm. long; calyx lobes shorter than the calyx tube. W. E. O. strigosa 

 AA. Petals 2.5-4 cm. long. 



B. Calyx lobes nearly glabrous, shorter than the calyx tube; annual, erect. E. 



O. macbrideae 



