280 



THE FLORA. 



2. POLEMO'NIUM. Polemony. 



1 P. coeru'leum. Blue P. Greek Valerian. Stem erect, l-2f. high. Lvs. pinnate, 

 with 11-17 leaflets. Capsule 12-20-seeded. Sometimes wild, t 



i P. rep'tans. Creeping P. Stem weak, diffuse. Leaves pinnate, with 7-11 lea&eljs. 

 Capsule 4-6-seeded. Woods, common. Light blue. 



Order XCIII. CONYOLYULACEiE. Bindweeds. 



Serbs twining or trailing, with alternate leaves ; flowers showy: 



calyx with 5 much imbricated sepals, persistent: 



corolla regular, 5-iobed or entire, pjaited and twisted in the bud: 



stamens 5, and style single ; ovary free, oecommg in 



fruit a pod which is 2-4-celled and 2-6-seeded ; 



embryo large and leafy, with thin mucilaginous albumen. 



The suborder, Ousoutine^, consists of small orange-colored, leafless 

 plants, living on other plants (parasites), 

 with small flowers, and no cotyledons 

 (OusoiJTA, the Dodder). 



Analysis of the Genera. 



§ Ovaries 2, distinct, with 2 distinct styles f 



§ Ovary 1, open, when ripe by 2-4 valves 2 



2 Ovary 2-celIed, 2-valved, 4-seeded.. . .3 



2 Ovary 3-celled, 3-valved, 6-seeded b 



2 Ovary 4-celled, 4-valved, 4-seeded. . . .a 



3 Styles 2, distinct e 



3 Styles united into 1 4 



4 Calyx enveloped in 2 large bracts . . . .d 



4 Calyx naked c 



<i Stamens exserted. Cor. small (scarce V broad). 

 a Stamens included. Corolla large (2^ broad). + 



b Beautiful twining vines. Cor. bell-funnel. 

 c Stamens included. Stigma capitate. 

 e Stamens included. Stigmas 2, linear, 

 e Stamens exserted. Corolla tube slender, t 



d Stigmas 2, obtuse. Corolla bell-form, f 

 e Peduncles longer than the leaves. Soft-downy. 



f Caii,snles 2, each 1-sceded. Plant very small 



Fig. 610. Entire-leaved Cypress-vine 

 {Quamoclit coccin&a.) 



t Cypress Vine. Quam^oclit. 1 



Siveet Potato. Bata'tas. 2 



t Morning-glory. Phar''bitis. 3 



False Bindweed. IpoMiE''A. 4 



Bindweed. CoNVOL^vcLrs. £ 



Good-niglit. Calyntc'tion. 



Eutland Beauty. Calyste''gia. 6 



^iylisma. Stylis'ma. 

 , prostrate. S. Dichon'dra. 



