Small trees or shrubs, sometimes scrambling or climbing. Stipules lateral. Leaves petiolate, alternate, simple, serrate or rarely entire, 3-7-veined from the base. Flowers in terminal or axillary panicles or in leaf-opposed or axillary umbel-like cymes. Sepals 5, stellately hairy, coloured inside like the petals. Petals 5, most often yellow, less often white and rarely purple (Grewia occidentalis), usually with a nectar-bearing claw or gland at the base. Stamens numerous. Ovary 2-4-locular. Fruit indehiscent, without bristles, a (1-)2-4-lobed drupe with (1-)2-4 pyrenes. Derivation of name: for Nehemiah Grew (1641-1712), British botanist and physiologist. Worldwide: 150 species in warm parts of the Old World. Caprivi: 13 taxa. Insects associated with this genus:
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| Species | Content | |
| avellana Hiern | Description, Image | |
| bicolor Juss. | Description, Image | |
| falcistipula K.Schum. | ||
| flava DC. | Description, Image | |
| flavescens Juss. var. flavescens | Description, Image | |
| monticola Sond. | Description, Image | |
| olukondae Schinz | Description, Image | |
| pachycalyx K. Schum. | Description, Image | |
| retinervis Burret | Description, Image | |
| schinzii K. Schum. | ||
| subspathulata N.E. Br. | ||
| tenax (Forssk.) Fiori | Description, Image | |
| villosa Willd. | Description, Image |