ONAGEACE^. 81 



2. C. autumna'lis. Growing under water. May be dis- 

 tinguished from C. verna by its leaves being retuae and all 

 linear from a broader base, and its flowers without bracts. 



Order XXXVII. ONAGRA'CE^. (Evbning-Primrose P.) 



Herbs with perfect and symmetrical flowers, the parts of 

 the latter in twos or fours. Calyx-tube adherent to the 

 ovary, and usually prolonged above it. Petals and stamens 

 inserted on the calyx. Style 1. Stigmas 2 or 4 or capitate. 

 (See Part I., sections dd 1 7, for description of a typical 

 plant.) 



Synopsis of tlie Genera. 



1. Clrcse'a. Petals 2, obcoi'date. Stamens 2. Stigma capitate. Fruit 



bur-like, 1-2-seeded, beset with iiooked bristles. Delicate lovi' plants 

 with opposite leaves and very small white flowers in racemes. 



2. Epilo'1>iiini. Petals 4, Stamens 8. Calyx-tube hardly prolonj^ed 



beyohd the ovary. Frnit a linear pod, many-seeded, the seeds pro- 

 vided with tvfts of downy hairs.. 



3. (Euotlie'ra. Petals 4. Stamens 8. Stigma 4-lobed or discoid. 



Flowers yellow (wliite in one species). Calyx-tube much pro- 

 longed. Pods cylindrical or club-shaped. Seeds without tufts. 



4. Gan'ra. Peiaisi, clawed and unequal. StamensS. Stigma 4-lobed, 



with a cup-like border. Calyx-tube much prolonged. Fruit hard 

 and nut-like, ribbed, indehiscent or riearly so, few-seeded. 

 Flowers rose-coloured or white, turning scarlet. 



5. Lii4l'%vig'in. Petals 4, or none. Stamens 4. Calyx-tube not pro- 



longed. Stigma capitate. 



1. eiKCE'A, Tourn. Enohabter's Nightshade. 



1. C. Lutetia'na, L. stem 1-2 feet high. Leaves oppo- 

 site, ovate, slightly toothed. No braHs under the pedicels. 

 Fruit roundish, bristly-hairy, 2-celled. — Bich woods. 



2. C. alpi'na, L. Stem low and delicate (3-8 inches). 



Leaves cordate, coarsely toothed. Minute bracts under the 



pedicels. Fruit club-shaped, soft-hairy , 1-celled. — Deep low 



woods. 



2. EPILO'BHIM, L. Wh-low-herb. 



1. E. angustifo'lium, L. (B. spica'tum, Lam.) (Great 

 Willow-herb.} Stem 3-6 feet high, simple. Leaves lance- 

 olate, scattered. Flowers purple, very showy, in a terminal 



