266 THE FLORA. 
2. POLEMO'NIUM. Polemony. 
1 P.ceru’leum, Blue P. Greek Valerian. Stem erect, 1-2f. high. Lvs. pinnate, 
with 11-17 leatlets. Capsule 12-20-seeded. Sometimes wild. f 
2 P.rep’tans, Creeping P. Stem weak, diffuse. Leaves pinnate, with 7-11 leaflets, 
Capsnie 4-6-seeded. Woods, common. Light blue. 
Oroex XCIIL. CONVOLVULACE.Z. Bindweeas. 
Herbs :wining or trailing, with alternate seaves ; Mowers showy: 
eaiye with 6 much imbricated separs, nersistent: 
corolla reguiar, 5-iobed or entire, piaitec. snc twisted in the bud: 
stamens 5, and style singie ; ovary free, pecoming in 
fruit a pod which is 2-4-celled and 2-6-seeded ; 
embryo large and leafy, with thin mucilaginous albumen. 
The suborder, Cusourinz, consists of small orange-colored, leafless 
plants, living on other plants (parasites), 
with small flowers, and no cotyledons 
(Cusouta, the Dodder). 
Analysis of the Genera. 
§ Ovaries 2, distinct, with 2 distinet styles....f 
§ Ovary 1, open. when ripe by 2-4 valves....2 
2 Ovary 2-celled, 2-valved, 4-seeded....8 
2 Ovary 8-celled, 8-valved, 6-seeded....b 
2 Ovary 4-celled, 4-valved, 4-seeded....a 
8 Styles 2, distinct....¢ 
8 Styles united into 1....4 
4 Calyx enveloped in 2 large bracts....d 
4 Calyx naked....¢ 
Fig. 610 Entire-leaved Cypress-vine 
(Quamoclit coccineu.) 
a Stamens exserted. Cor. small (scarce 1’ broad). + Cypress Vine. Quam’ocuir. 1 
a Stamens included. Corolla large (2’ broad). t+ Sweet Potato. Bata’ras. 2 
b Beautiful twining vines. Cor. bell-fuanel. + Morning-glory, Puar’sitis. 3 
¢ Stamens included. Stigma capitate. False Bindweed. Irpumm’a. 4 
c Stamens included, Stigmas 2, linear. Bindweed, Convou’voos, & 
e Stamens exserted, Corolla tube slender. + Good-night. CALYNYO’TION. 
d Stigmas 2, obtuse. Corolla bell-form. + Rutland Beauty. Carystn’au, 6 
e Peduncles longer than the leaves. Soft-downy. Stylisma, STYLIS'’MA, 
f Capsules 2, each 1-seeded. Plant very snuall, prostrate. §. Drcnon’pra. 
