1	"Inflorescences axillary"	2
1	"Inflorescences leaf-opposed, terminal, or extra-axillary"	13
2	"Older branches round or flattened; stigmatic lobes wide; each cell of the ovary with 3-8 ovules"	3
2	"Older branches 4-angled; stigmatic lobes subulate; each cell of the ovary with 14 or more ovules"	12
3	"Ovaries-1-celled; style lateral; fruits sumple"	4
3	"Ovaries 2-celles; style centric; fruits lobed or unlobed by abortion"	6
4	"Young branches elongated, somewhat flattened, with few or no lenticels; leaf bases more or less symmetric; ovaries with 3 ovules; styles with 3 stigmatic lobes; fruits covered with a thick grey felt composed of densely packed hairs"	"Grewia mollis"
4	"Flowering branches round in cross-section, with numerous lenticels; leaf bases often asymmectric; ovaries with 4-8 ovules each; styles with 4-8 stigmatic lobes; fruits glabrous or sparsely hairy"	5
5	"Leaf blades widest at or below the middle, the pper surface glabrous, the lower surface glabrous or with a few scattered hairs, leaf margins crenate-serrate, leaf tip acuminate; fruits glabrous or with a few scattered hairs"	"Grewia trichocarpa"
5	"Leaf blades widest at or above the middle, pubescent to tomentose on both srufaces, margins irregularly crenate-serrate, tip obtuse to acute; fruits sparsely hairy"	"Grewia velutina"
6	"Sepals 13-15 mm long"	7
6	"Sepals less than 13 mm long"	8
7	"Inflorescences solitary in each axil; petals yellow"	"Grewia arborea"
7	"Inflorescences 1-2 in each axil; petals white"	"Grewia pannosisepala"
8	"Flowers small, sepals 4.5-6 mm long, petals 2.5-3.5 mm long"	"Grewia densa"
8	"Flowers larger"	9
9	"Young branches with brownish or yellowish hairs"	10
9	"Young branches glabrous or with whitish hairs"	11
10	"Leaf blades oblong or elliptic-oblong, strongly asymmetric at the base, sometimes with reflexed margins"	"Grewia plagiophylla"
10	"Leaf blades elliptic to ovate or obovate, not strongly asymmetric at the base, margins not reflexed"	"Grewia balensis"
11	"Leaf margins crenate; inflorescences 1-3 together; fruits glabrous or with long scattered hairs when young"	"Grewia bicolor"
11	"Leaf margins serrate; inflorescences solitary; fruits with scattered stellate hairs"	"Grewia gillettii"
12	"Petals 1-13 mm long; ovaries 2-celles; fruits 10-17 mm in diameter, coveered with wart-like protruberances"	"Grewia forbesii"
12	"Petals 3-5.5 mm long; ovaries 1-celled; fruits 5-8 mm in diameter, without protrubrances"	"Grewia holstii"
13	"Petals white and lilac; stigmatic lobes wide; fruits distinctly 2-4-lobed"	14
13	"Petals yellow or, when young, pink; stigmatic lobes subulate or laciniate; fruits not or shallowly lobed"	21
14	"Inflorescences 5-20 flowers"	"Grewia obovata"
14	"Inflorescences with 1-3 flowers"	15
15	"Upper surfaces of leaves pale green or white; petals lilac, their outersurfaces hairy over the midveins"	"Grewia lilacina"
15	"Upper surfaces of leaves green; petals white to pale lilac, completely glabrous"	16
16	"Inflorescences always 1-flowered"	17
16	"Inflorescences almost always with 3 or more flowers"	20
17	"Pedicels with a whorl of 3 persistent bracts at the base; petals white to pale lilac, glabrous"	"Grewia kakothamnos"
17	"Pedicels with rapidly deciduous bracts; petals white"	18
18	"Leaf blades broadly ovate to orbicular, with crenate margins; inflorescences 2-5 cm long; ovaries glabrous"	"Grewia tenax"
18	"Leaf blades obovate to elliptic, with entire to serrate margins; inflorscences 1-2.5 cm long; ovaries hairy"	19
19	"Leaf blades obovate, up to 2.5 cm long, bases cuneat to rounded, margins crenate-serrate; sepals 10-12 mm long"	"Grewia erythraea"
19	"Leaf blades elliptic, up to 8 cm long, bases cordate, margins entire; sepals 15-22 mm long"	"Grewia ogadenensis"
20	"Leaf blades with emarginate tips"	"Grewia truncata"
20	"Leaf blades with obtuse to acute tips"	"Grewia tembensis"
21	"Plants creeping, with prostrate stems rooting at the nodes; inflorescences 1-flowered"	"Grewia cerasifera"
21	"Plants erect or spreading, stems neither prostrate nor rooting at the nodes; inflorescences mostly 2-3-flowered"	22
22	"Leaf blades with scattered stellate hairs on the lower surface; stigmatic lobes subulate; flowers bisexual"	"Grewia schweinfurthii"
22	"Leaf blades tomentose on the lower surface; stigmatic lobes laciniate; flowers unisexual"	23
23	"Sepals with tufts of hairs at their tips; fruits not lobed, 7-9 mm in diameter"	"Grewia penicillata"
23	"Sepals without tufts of hair at their tips; fruits shallowly lobed, 10-15 mm in diameter"	"Grewia villosa"