Cryptostegia grandiflora Roxb. ex R.Br.
| Family: | PERIPLOCACEAE |
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| Sub-Family: | Not available | ||||
| English Name: | Palay Rubbervine | ||||
| Synonym: | Cryptostegia grandiflora var. tulearensis Costantin & Gallaud | ||||
| Common Name: | Purple allamandra, Rubbervine | ||||
| Flowering & Fruiting Period: | Throughout the year | ||||
| Distribution: | Native of Madagascar, widely planted in the tropics | ||||
| Habitat: | Cultivated | ||||
| Uses: | The plant can be pruned and grown as a hedge. Latex obtained from the stems can be used to make rubber. It is equal in quality to the latex obtained from the rubber tree, Hevea sp. | ||||
| Key Characteristics: | Evergreen suberect or climbing shrubs. Leaves opposite, exstipulate, subcoriaceous, elliptic, obtuse at apex, subacute at base. Flowers whitish, tinged with light purple, showy, in few-flowered, terminal, dichotomous cymes. Calyx divided nearly to base, ovate, acute at apex, margins recurved, glabrous within near base, otherwise puberulent. Corolla, subcampanulate at throat; lobes obliquely-oblong, acute; anthers sagittate, adnate to the stigma, connective produced into acute processes. Ovary glabrous, ovules many; style short, stout, glabrous, the apex dome-shaped. Follicles divaricate, woody, 3-angled, glabrous; seeds ovate, glabrous. | ||||