202 polemoniace;e — convolvulaceje. 
and 5-lobed limb, throat nearly closed by the dilated bases of 
the filaments. 
1. Polemonium Linn. 
1. P. cceridcum (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 nu- 
merous. Fl. numerous, somewhat drooping, bright blue or white. 
— Bushy hilly places, rare. P. VII. Blue Jacob's Ladder. 
Order LIV. CONVOLVULACE^. 
Cal. inferior, 5-parted, persistent, imbricated, often unequal. 
Cor. hypogynous, regular, plaited, deciduous. Stam. 5, from 
near the base of the corolla. Ovary of 2 — 4 cells, few-seeded, 
surrounded by an annular hypogynous disk. Style 1, rarely 2. 
Caps, with the valves separating from the edges of the dissepi- 
ments or bursting transversely. 
* With leaves and cotyledons. 
1. Convolvulus. Cor. bellshaped, with 5 prominent plaits 
and 5 shallow lobes. Style simple, stigmas 2. Caps. 2 — 4- 
celled, cells 2-secded. 
** Without leaves or cotyledons. 
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 within. Stam. 4 — 5. Styles 
2, rarely 1. Caps, bursting transversely, 2-celled, 4-seeded. 
1. Convolvulus Linn. 
1. C. arvensis (L.) ; 1. arrowshapcd with acute lobes, peduncles 
mostly 1 -flowered, bracts minute distant from the flower. — E. B. 
312. — St. numerous, angular, twining or prostrate, leafy, branch- 
ed. Peduncles sometimes 2-flowered. Cor. beautifully variegated 
with pink and white. Roots descending remarkably deep. Plant 
glabrous or (/3. hirtus Koch) st. and 1. downy. — Fields and 
hedges. P. VI. — VIII. Small Bindweed. 
2. C. Sepittm (L.) ; 1. arrowshaped with truncate lobes, pe- 
duncles 1 -flowered square, bracts larye cordate close to the flower. 
— E. B. 313. — St. twining, many feet long, with large rather 
distant leaves. Fl. solitary, axillary, large, white. Bracts quite 
inclosing the calyx. Fr. imperfectly 2-celled through the short- 
ness of the dissepiment. — Hedges and thickets. P. VII. VIII. 
Great Bindweed. 
3. C. Soldanella (L.) ; 1. reniform slightly angular fleshy, pe- 
duncles 1 -flowered with 4 membranous angles, bracts ovate close 
to the flower. — E. B. 314. — St. short, procumbent. Fl. large, 
