onagracejE. 81 



2. C. autumna'lis. Growing under water. ]VIa,y be dis- 

 tinguished from C. verna by its leaves being retuse ancL all 

 linear from a broader base, and its flo-wers without bracts. 



Okder XXXVII. ONAGRA'CE.ffi. (Evening-Pkimbose 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 calyi. Style 1. Stigmas 2 or 4 or capitate. 

 (See Part I., sections Id 4. 7, for description of u typical 

 plant.) 



Synopsis of tUc Genera. 



1. Circse'a. Petals 2, dbcordate. Stamens 2. Stigma capitate. Fruit 



b«7'-Ze7ce,l-2-seeded, toeaet with hoolccd bristles. Delicate low plants 

 with opposite leaves and very small white flowers in racemes. 



2. KpIIo'lbinin. Petals 4. Stamens S. Calyx-tube hardly prolonscd 



beyond the ovary. Fruit a linear pod, many-seeded, the seeds pro- 

 vided with tufts of downy hairs. 



3. (Eiiothe'ra. Petals 4. , Stamens 8. Stigma" 4-lobed or discoid. 



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

 longed. Pods cylindrical or club-shaped. Seeds without tv/1^s. 



1. Gau'ra. Pe8aZs4, clawed and unequal. Stamens 8. Stigma 4-lobed, - 

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

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

 Flowers rose-coloured or white, turning scarlet. 



5. lutlwig'ta. Petals 4, or none. Stamens 4. Calyx-tube not pro- 

 longed. Stigma capitate. v 



1. CIKCjE'A, Tourn. Ehchantek's Nightshade. 



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

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

 Fruit roundish, bristly-hairy, 2-celled. — Rich 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'BIirM, L: Willow-hekb. 



1. E. angUStifO'lium, L. {E. spica'tum. Lam.) (Great 

 Willow-hekb:) Stem 8-6 feet high, simple. Leaves lance- 

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



