Dicotyledons with Gamopetalous Flowers — Asclepiadacece. 
7 i 
POLLEN rarely granular ; usually coherent in each cell of the anther into a waxy mass ( pollinium ); the pollen- 
masses of contiguous cells of adjacent anthers usually united by short stalks to a common gland applied upon the 
stigma ; the pollen-masses are pendulous, horizontal, or erect in different sections of the Order. 
Fruit usually follicular, with comose seeds. 
USES, &c.—The juice is usually milky and acrid, sometimes poisonous. Several species are employed 
medicinally in their respective countries. Asclepias, Periploca grcecci , the fleshy-leaved waxen-flowered Indian and 
Australian Hoy as of our plant-houses, Stephanotus floribunda of Madagascar, Ceropegias , and the remarkable 
succulent and leafless Carrion-flowers ( Stapelia ) of the Cape of Good Hope, are in cultivation. 
Natural Order 
CONVOLVULACEzE. Tab. 59. 
Diagnosis. —Usually twining herbs with alternate leaves, or slender twin¬ 
ing leafless parasites. Sepals 5, distinct. Corolla hypogynous, regular, 
twisted-plaited in bud. Stamens epipetalous, as many as corolla-lobes and 
alternate with them. Ovary 2-4-celled ; ovules 1 or 2 in each cell. 
Distribution. —A numerous Natural Order, most abundant in Tropical and Subtropical regions 
of both Hemispheres, though with several species widely spread through the cooler zones. 
Number of British Genera, 2; Species, 5. 
