The flowering plants of Africa: An analytical key to the genera of African phanerogramsThonner, Franz
Science
The flowering plants of Africa: An analytical key to the genera of African phanerograms
Thonner, Franz
Angiosperms -- Africa; Plants -- Africa
144. Leaflets toothed. Stipules leaf-like. Flowers solitary. Corolla
white or blue. Fruit ovate to oblong, turgid, 2-valved.--Species 2.
North Africa and Abyssinia; one species also cultivated in Angola. They
yield edible seeds (chick-peas) and are used medicinally. =Cicer= L.
Leaflets entire. Flowers in umbels or heads, rarely solitary, but then
corolla yellow. 145
145. Leaflets numerous. Leaf-stalk long. Flowers very small, in heads
or umbels. Keel nearly straight. Fruit jointed.--Species 6. North
Africa and high mountains of Central Africa. Some are used as fodder.
“Birds-foot.” (Including _Arthrolobium_ Desv.) =Ornithopus= L.
Leaflets 3-5, the lower usually stipule-like. Leaf-stalk short or
wanting. 146
146. Corolla yellow; standard suborbicular, with a long claw. Fruit
jointed. Undershrubs with long silky hairs. Stipules small. Flowers
solitary or 2-3 together in the axils of the leaves.--Species 1.
North-west Africa (Algeria). (_Ludovicia_ Coss.) =Hammatolobium= Fenzl
Corolla white or red; standard oblong or ovate, short-clawed; wings
coherent towards the apex, longitudinally folded or transversely
gibbous; keel gibbous on each side. Fruit continuous, terete, 2-valved.
Stipules very small or wanting.--Species 6. North Africa. (Including
_Bonjeania_ Reichb.) =Dorycnium= Vill.
147. (126.) Anthers of two kinds, five shorter and attached by the
back, the others longer and attached by the base, or the alternate ones
rudimentary. 148
Anthers all alike. 205
148. Leaves digitate, unifoliolate, simple, or wanting. [Tribe
GENISTEAE.] 149
Leaves pinnate, but sometimes with three leaflets. 195
149. Uppermost stamen free or nearly so. 150
Uppermost stamen united with the others into a tube or sheath. 158
150. Stem herbaceous or woody at the base only. Leaves stipulate. 151
Stem woody throughout. Leaves usually exstipulate. 154
151. Keel with a straight beak. Anthers bearded. Stigma lateral. Fruit
linear. Leaves simple, sessile. Flowers in axillary racemes.--Species
2. Southern West Africa. (Under _Indigofera_ L.) =Rhynchotropis= Harms
Keel with a spirally twisted beak or without a beak. Anthers not
bearded. Stigma terminal. Leaves unifoliolate or digitate. 152
152. Keel spirally beaked. Fruit oblong. Flowers opposite the leaves,
solitary or 2-3 together. Bracteoles 2.--Species 2. South Africa to
Amboland. =Bolusia= Benth.
Keel curved inwards, not beaked. Flowers in axillary or terminal
inflorescences. Bracteoles none. 153
153. Keel somewhat pointed. Ovules several. Fruit linear. Leaves
digitate. Corolla reddish.--Species 1. East Africa. =Parochetus= Hamilt.
Keel blunt. Ovule 1. Fruit ovate. Gland-dotted plants.--Species 60.
Some are used as ornamental or medicinal plants. =Psoralea= L.
154. Keel with a lateral gibbosity or spur. Anthers distinctly unequal.
Leaves simple. 155
Keel without a lateral appendage. Anthers nearly equal. 156
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