Fayaz, F. (2011) Encyclopedia of Tropical Plants Firefly Books, New Zealand
Shrubs, rarely perennial herbs; succulent, glabrous or pubescent; stems erect, usually branched. Leaves crowded in rosettes at the end of branches. Inflorescence cymes, terminal; flowers pedicellate, erect or spreading. Sepals basally connate; petals spreading or erect, cream or bright yellow. Fruit erect; calyx and corolla not circumscissile in fruit. Seeds ellipsoid, ribbed. Worldwide: 35 species in Atlanic Islands, Southern Morocco, East Africa and Southern Arabia. Zimbabwe: 1 cultivated taxon. |
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| Species | Content |
| arboreum (L.) Webb & Berthel. |