Classification of Plants 



2qi 



Limnantheum. — Floating plants with leaves on very- 

 long petioles, shield-shaped or heart-shaped. Flowers yellow, 

 springing from near the upper end of the petiole. 



Order Apocyne^. 



Calyx deeply 5-lobed. Corolla salver-shaped. Petals twisted 

 in the bud. Anthers 5, alternating with and upon the petals, 

 with short filaments. Disc usually present. Carpels 2, separate 

 or united. Fruit a capsule, berry, or drupe. Shrubs with 

 opposite leaves and usually poisonous, milky juice. 



The Oleander and Periwinkle belong to this genus. 



Carpels united into a 2-celled berry or drupe — 



Carissa. — Milky shrubs with forked spreading branches, 

 opposite rigid leaves, and forked or twice-forked spines in the 

 axils. Berry delicious. From Knysna district to Natal. 



Carpels separate ; style single — 



Not spiny or fleshy — 



Strophanthus. — Glands at the base of the calyx. 

 Corolla funnel-shaped. Petals with 

 very long points. Throat furnished 

 with a 2 -parted scale between the 

 petals. Stamens closely surrounding 

 the stigma, taper-pointed and often 

 bearded. Follicles with long hairy 

 seeds. 



Climbing or erect shrubs with opposite 

 or whorled leaves. . Eastern. 



Fig. 253. — Stropha7itJius capensis, 

 and a corolla laid open showing 

 scales at the throat. 



Spiny shrubs with succulent 

 stems — 



Pachypodium. — Shrubs armed 

 with twin spines in the place of 

 stipules. Fruit of lanceolate follicles, many-seeded; seeds 

 hairy at one end. 



Small shrubs with large tuberous roots. Flowers white or red, toward 

 the end of the branches. Two or three species found in he Karroo. 



