POLYPETALOUS EXOGEXOUS PLANTS. 155 



aud erect on stout petioles. Sepals G, the outer ones 

 rounded; j^etals numerous, thick iind flesliy, truncate. In 

 still water; flowers through the summer. In Devil's Eiver, 

 West Texas. — Bigcloiu. 



10. SIDESADDLE-FLOWEE FAMILY. Order, Sar- 



RACENIACE^. 



Leaves radical, nrn-shaped or trumpet-shaped. Floiu- 

 ers large, on scapes. SejJals 5, colored, persistent ; below the 

 calyx are three bractlets. 



Petals 5, incurved, deciduous. Stamens numerous, sit- 

 uated on the receptacle. Styles 5. Stigmas united, form- 

 ing a five-angled peltate-persistent membrane covering the 

 ovary and stamens. Capsule 5-celled, seeds many. Leaves 

 holding water, with a wing on the front side and a hood at 

 top. 



TJiis order contains nine genera. 



11. POPPY FAMILY. Order, Papaverace^. 



Herls with alternate, exstipulate, leaves, and generally a 

 milky or colored juice. Floiuers solitary, on long pedun- 

 cles, never blue, hypogynous. Sejmls 2, rarely 3, caducous, 

 and petals 4, rarely 6, all imbricated. Stamens indefinite, 

 but some multiple of 4. ^?i?f/^er5 2-celled, innate. Ovary 

 compound. Style short or none. Stigmas 2 or more, stel- 

 late upon the flat apex of ovary. Fricit either pod -shaped 

 with tAvo parietal placentae, or capsular with several. Seeds 

 indefinite, minute. 



ARGEMONE. Mexican Poppy. 



Sepals 2-3, horned or hooded. Petals 4-8. Stigmas 

 4-7, free, radiate. Capsule oblong-obovate, hispid, opening 



