VASCULAR PLANTS. 107 



7. Clarkia, Pursh. 



Calyx-tube prolonged above the ovary, ob- 

 conical, deciduous, the lobes reflexed. Petals 

 4, unguiculate. Stamens 8, alternate ones de- 

 pauperate; anthers basifixed. Capsule linear. 

 Seeds co , smooth. . 



8. Eucharidium, Fisch. & Mey. 



Calyx-tube linear-elongated above the ovary; 

 its lobes reflexed, deciduous. Petals 4, ungui- 

 culate. Stamens 4, alternate with the petals; an- 

 thers basifixed. Seeds go , smooth. 



. flowers red. 



9. Boisduvalia, Spach. 



Calyx- tube prolonged beyond the ovary, fun- 

 nel-form, deciduous; the lobes erect. Petals 4, 

 sessile, 2-lobed. Stamens 8, those opposite 

 the petals shorter; anthers basifixed. Capsule 

 4-locular. Seeds oo, smooth. 



. flowers purple. 



Family lxxiii. Lythrariae. 



Calyx-tube not adnate to the ovary. Sta- 

 mens inserted with the petals, and of definite 

 number; anthers introrse. Ovary free, with 

 central placenta?, compound of carpidia; ovules 

 x ; style 1. 



1. Ly thrum, L- 



Calyx tubular, 8 — 12-costate; limb 8 — 12-den- 



