266 105. LEGUMINOSAE 



serve also as a substitute for coftce ; several species arc used as orna 



mental plants Lupinus L. 



Leaflets 2 — 4. Stipules usually free. Wings free 185 



185. Leaflets 2 or 4, very rarely 3. Lateral calyx-lobes much shorter than the 



others. Fruit jointed, bristly or spiny, indehiscent. Herbs or under- 

 shrubs. — Species 3. Tropical and South Africa. Used as fodder. 



Zornia Gmel. 

 Leaflets 3. Fruit not jointed, dehiscing by two valves 186 



186. Fruit covered with glandular tubercles or hairs. Seeds without an 



outgrowth at the hilum. Corolla yellow ; keel cur\ed inwards. 

 Shrubs. — Species 7. North and Central Africa. . Adenocarpus DC. 



Fruit not glandular, but usually hair}^ 187 



1S7. Seeds with an outgrowth at the hilum Shrubs. — Species 15. North 

 Africa. Some are poisonous or are used as ornamental or medicinal 

 plants. (Including Sarothamnus Wimm., ShaHocytisus Webb, and 

 Teline Medik.) Cytisus L. 



Seeds without an outgrowth at the hilum. Herbs or undershrubs, rarely 

 shrubs. Corolla yellow. (See 173.) Argyrolobium Eckl. & Zeyh. 



188. (182.) Calyx sheath-like, split on one side after flowering. Corolla 



yellow ; keel and wings adnate below to the staminal tube ; 

 keel acuminate, curved inwards ; wings obovate. Stigma oblique. 

 Fruit linear. Seeds without an outgrowth at the hilum. Shrubs or 

 trees. Leaves unifoliolate, without stipules. — Species i (5. junceiim 

 L., Spanish broom). North Africa. Yields fibres and medicaments 



and is used as an ornamental plant Spartium L. 



Calyx not sheath-like. Keel obtuse or free from the staminal tube. . 189 



189. Seeds with an outgrowth at the hilum. Fruit linear or oblong, flat. 



Petals free from the staminal tube. Shrubs. (See 187.) Cytisus L. 

 Seeds without an outgrowth at the hilum 190 



190. Keel distinctly curved inwards ; wings and keel free from the staminal 



tube ; standard suborbicular. Fruit linear or oblong, flat, covered 

 w^ith glandular tubercles or hairs. Shrubs. Leaves trifoliolate, with 

 small stipules. Flowers in racemes, yellow. (See 186.) 



Adenocarpus DC. 

 Keel straight or nearly so, blunt, gibbous at each side ; wings and keel 

 usually adnate to the staminal tube ; the former oblong ; standard 

 ovate. Fruit usually inflated. Shrubs or undershrubs. — Species 40. 

 North Africa. Some species yield fibres, dyes, and medicaments, or 

 serve as ornamental plants. (Including Retama J3oiss.) Genista L. 



191. (181.) Calyx deeply divided. Ovary more or less distinctly stalked. 



Leaflets minutely toothed. Stipules adnate to the leaf-stalk. (See 



129.) Ononis L. 



Calyx shortly toothed. Filaments not broadened above. Ovary sessile 

 or nearlv so. Leaflets entire 192 



