62. POLEMONIACB^. — 53. CONVOLXTTLACE^. 289 
Order LII. POLEMONIACE^. 
Cal. inferior, 5-parted, persistent. Cor. hypogynous, regular, 
5-lobed. Stam. 5, unequal, on the tube of the corolla. Ovary 
3-celled. Stigmas 3-fid. Caps. 3-celled, 3-valved ; valves 
separating at the axis. — No stipules. 
1. PoLEMONiUM. Cal. 5-fid. Cor. rotate, with a short tube 
and 5-lobed limb ; throat nearly closed by the dilated bases 
of the filaments. 
1. Polemo'nium Linn. Jacob's Ladder. 
1. P. cceriUeum (L.) ; st. angular, 1. glabrous pinnate, leaflets 
ovate-lanceolate pointed, panicle downy glandular. — E. B. 14. 
— St. 1 — 2 feet high, simple, hollow. L. alternate, leaflets 
many. Ft. many, somewhat drooping, bright blue or white. — 
Bushy hilly places, rare. P. VII. E. S. 
Order LIII. CONVOLVULACE^. 
Cal. inferior, of 5 persistent imbricate often unequal sepals. 
Cor. hypogynous, regular, deciduous. Stam. 4 — 5, from near 
the base of the corolla. Ovary of 2 — 4 cells, few-seeded, sur- 
rounded by an angular hypogynous disk. Style 1, rarely 2. 
Caps, with the valves separating from the edges of the dissepi- 
ments or bursting transversely. — No stipules. 
* With leaves and leaflike cotyledons. jEstivation plaited. 
1. Convolvulus. Cor. bellshaped, with 5 prominent plaits 
and 5 shallow lobes. Style simple ; stigmas 2. Caps. 
2 — 4-celled ; cells 2-seeded. 
** Without leaves or cotyledons. ^Estivation imbricate. 
2. CuscuTA. Cal. 4— 5-cleft. Cor. roundish-urceolate or 
bellshaped, 4 — 5-parted, with as many scales alternating 
with the segments at the base withia,. Stam. 4" — 5. Styles 
2, rarely 1 . Caps, bursting transversely, 2-celled, 4-seeded. 
1. Convol'vulus Linn. Bindweed. 
* Bracts mimite, distant from the flower. 
1. C. arven'sis (L.) ; 1. ovate- or strapshaped-hastate, pe- 
duncles mostly 1-flowered.— ^. B. 312.— St. many, angular, 
T 
