PL ex . cor . 
29. VINCiE. 101. Vinca. 
343 
Woods and coppices ; perennial ; May. 
Stem upright ; leaves rough ; flowers blue ; follicles 
shining. 
Fam. XIII. 30. CONVOLVULACEiE. De Candolle. 
Convolvuli , Jussieu. 
Calyx 5-1 obed, persisting; corolla 1 -petal, hypogynous, 
deciduous, limb 5-lobed ; lobes regular ; stamens 5, in- 
serted at the base of the corolla and alternate with the 
lobes; ovary simple, 2 or 4-celled, rarely 1-celled or 2 
or 4-parted, few-seeded, girt at the base with an an- 
nular gland; ovules definite; style 1, simple or divided; 
stigma obtuse or acute ; capsule 2 or 4-celled, mostly 
valvular, rarely valveless or opening transversely ; edge of 
the valves opposite to the dissepiments : seeds bony, affixed 
at the base of the inner angles of the dissepiments; pe- 
risperm mucilaginous ; corculum curved ; cotyledons cor- 
rugated ; radicle below.— Stem herbaceous, rarely shrubby, 
mostly twining, milky, bald or simply pubescent; leaves 
alternate, mostly undivided, rarely 0; stipules 0; inflo- 
rescence axillary or terminal : peduncles 1 or many-flowered ; 
Iractece usually 2 to each flower. 
Corolla bellshape ; calyx 5-parted ; 
Iractece 2, leaflike, embracing the calyx. Calystegia. 102. 
Corolla bellshape ; calyx 5-parted ; 
Iractece 0, or very small, distant .... Convolvulus. 103. 
Corolla bellshape, tube naked ; 
leafless, parasitic Cassytha. 105. 
Corolla funnelshape, tube 4 or 5-scaled ; 
plant leafless, parasitic Cuscuta. 104. 
A. Convolvuli. Ovary 1 ; capsule mostly valvate ; cotyle- 
dons wrinkled ; plant leafy. 
I. 102. CALYSTEGIA. R. Brown. Bindweed. 
Calyx 5-parted, inclosed in a 2-leaved bractea; corolla 
bellshape, 5-plaited, 5- angled ; stamens 5, nearly equal, 
shorter than the limb ; ovary half 2-celled, 4-seeded ; style 
undivided ; stigmata 2, blunt, round or globular ; capsule 
1-celled. — Herb milky, bald, twining or prostrate; peduncles 
solitary, 1 -flowered. 
