DICOTYLEDONES : POLYPETALJ] : CALYCIFLOR^. 637 



lomentum, with transverse septa, dividing into segments. Cotyledons leafy, 

 epigaeal. 



Hippocrepis, the Horse-shoe Vetch, and Coronilla are common in meadows ; 

 Onobrychis sativa, the Sainfoin, is cultivated. Arachis hypogcea, the Earth- 

 Almond or Ground-Nut of tropical America, ripens its fruits in the earth. 

 Desmodium gyrans, the Telegraph-plant, has motile leaflets. 



Tribe 8. Viciea. Stamens diadelphous : legume unilocular; cotyledons 

 hypogean; leaves paripinnate and usually cirrhose (see Fig. 28 C). 



Vicia sativa, the Vetch, and V. Faba, the Bean, are cultivated : other species 

 occur wild. Pisum sativum and arvense, the Pea, are cultivated. Lens esculenta, 

 the Lentil, belongs to Southern Europe. Various species of Lathyrus (incl. 

 Orobus) occur wild in woods : L. odoratus and others are cultivated. 



Tribe 9. Phaseolece, Stamens diadelphous : legume unilocular ; cotyledons 

 usually epigean, but not leafy : leaves usually imparipinnate, frequently ternate. 

 Mostly climbing plants with twining stems. 



Phaseolus vulgaris, the French Bean, and P. multiflorus, the Scarlet Eunner, 

 are cultivated. Wistaria (Glycine) chinensis is an ornamental climber. Phy- 

 sostigma is the Calabar 



FI&. 437. Flower of an 



Fro. 436. Flower of a Cassia j Acacia (mag.): k calyx; c 



fcculyx; c corolla ; a stamens; a' corolla; st stamens, with 



the central shorter ones ; / ovary. (an) anthers ; n stigma. 



Tribe 10. r>albergie<z. Stamens mono- or dia-delphous : legume indehi scent ; 

 cotyledons fleshy. 



Pterocarpus. Dipteryx odorata, the Tonka Bean of South America, contains 

 coumarin in the seed. 



Sub-order 2. C^ESALPINIEJE. Flower dorsiventral, but not papilionaceous 

 (Fig. 327 B and Fig. 436) ; petals imbricate so that the posterior petal is 

 overlapped by those anterior to it ; stamens ten or fewer, free, more rarely 

 connate : the legume is frequently divided by transverse septa, and is in- 

 dehiscent : flowers in panicles or racemes : seeds often albuminous. 



Gleditschia triacanthos and other species are culivated for ornament. Cercis 

 Siliquastrum, the Judas tree, has rounded leaves. The wood of Ccesalpinia 

 braziliensis is known as Pernambuco or Brazil wood. Hsematoxylcn, Cassia, 

 Bauhinia, Tamarindus, and Ceratonia (C. Siliqua, the Carob-tree) are other 

 well-known genera. 



Sub-order 3. MIMOSE^E. Flowers regular; petals with valvate aestivation 



