758 Convolvulaceae. 
- Tubiflorae. 
Herbs or sometimes shrubs or trees, the plants of some families 
parasitic. Leaves with dilated blades, or scale-like. Flowers mainly 
perfect, variously disposed. Calyx of partially united sepals. Corolla 
gamopetalous, regular or irregular. Androecium of as many stamens 
as there are corolla-lobes, or fewer, sometimes partially represented 
by staminodia, sometimes partially obsolete. Gynoecium of 2 distinct 
or several united carpels. Fruit a capsule, berry, drupe, or a group 
of nuts, or utricle-like. 
91. Convolvulaceae. 
Flowers regular. Calyx free, persistent, of 5 distinct much 
imbricated sepals, rarely united in a 5-toothed or 5-lobed calyx. 
Corolla campanulate or funnel-shaped or rarely rotate or with a 
cylindrical-tube, the limb usually spreading, 5-angled or 5-lobed, 
folded in the bud or very rarely imbricate. Stamens 5, inserted 
in the tube, alternate with the lobes or angles of the corolla, often 
of unequal length; anthers versatile or almost erect, with 2 parallel 
cells opening by longitudinal slits. Ovary free, 2, 3 or 4-celled, 
rarely divided into 2 or 4 distinct carpels, with 1 or 2 erect or 
ascending ovules in each cell or carpel or 1-celled with 2 or 4 
ovules; style single or more or less divided into 2 entire or 2-fid 
branches or styles. Fruit either a capsule opening in 2, 3 or 4 or 
twice as many valves, leaving the dissepiments attached to the axis, 
or opening transversely, or bursting irregularly, or succulent and 
indehiscent. Seeds with a small quantity of mucilaginous albumen 
or without any; cotyledons usually very much folded, rarely straight 
or imperceptible. — Herbs, often twining or rarely shrubs, woody 
twiners or even trees, or (in Cuscuta) leafless twining parasites. 
Leaves alternate. Inflorescence various, usually axillary and more 
or less cymose or peduncles 1-flowered. Bracts and bracteoles 
usually small or deciduous, rarely large and persistent. [lowers 
often large and showy, rarely very small. 
A considerable Order, widely spread over almost every part of the 
globe, but most abundant in warm countries. 
A. Non-parasitie plants with developed green leaves. 
I. Pollen grains smooth. 
a) Tribe L: Dicranostyleae. — Flowers small, 
axillary, solitary or in few- to many-flowered 
axillary dichasia. Sepals free, sometimes 
accrescent. Corolla funnel-shaped so cam- 
panulate; aestivation contorto-plicate. Ovary 
