GROUP V. ANGIOSPERM-rE | DICOTYLEDOXES. 



559 



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

 species occur wild. Plsum sativum and aroense, the Pea, are cultivated. 

 Lens esculenta, the Lentil, belongs to Southern Europe. Various species of 

 Lathyrus (inch Orobus) occur wild in woods : L. odoratua and others are 

 cultivated. 



Tribe 7. Phaseolece. Stamens diadelphous: legume unilocular: coty- 

 ledons usually epigean, but not leafy : leaves usually imparipinnate, fre- 

 quently ternate. Mostly climbing plants with twining stems. 



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

 Runner, are cultivated. Wistaria (Glycine) chinensis is an ornamental 

 climber. Physostigma is the Calabar Bean. 



Sub-order 2. CJESALPINIE.S:. Flower dorsiventral, but not papilionaceous 

 (Fig. 272 B and Fig. 870) ; 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 cultivated for ornament. 

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



FIG. 370. Flower of a Cassia: 

 fc calyx ; c corolla ; o stamens ; ' 

 the central shorter ones ; /ovary. 



FIG. 371. Flower of an 

 Acacia (mag.) : fc calyx ; c 

 corolla; tt stamens, with 

 (an) anthers; n stigma. 



CcesaJpinia braziliensis is known as Pernambuco or Brazil wood. Hsema- 

 toxylon, Cassia, Bauhinia, Tamarindus, and Ceratonia (C. Siliqua, the 

 Carob-tree) are other well-known genera. 



Sub-order 3. MIMOSEJE. Flowers regular ; petals with valvate aestiva- 

 tion: stamens ten, rarely fewer, frequently very numerous, free (Fig. 371), 

 usually much longer than the perianth : legume sometimes divided by 

 transverse septa : seed rarely albuminous : flowers usually grouped in 

 spikes or capitula. 



Mimosa pudica, the Sensitive Plant, has irritable leaves (see Part III). 

 Species of Acacia are mimerous in Africa, Asia, and Australia. In the 

 Australian species the leaves are represented by flattened petioles (phyl- 

 lodes, p. 32) which are extended in the median plane. 



Cohort V. Saxifragales. Flowers generally monoclinous 

 and actinomorphic ; hypogynous, perigynous or epigynous ; eu- 



