636 PART III. THE CLASSIFICATION OF PLANTS. 



by transverse septa into several chambers. The fruit is usually a legume or a 

 lomentum (Fig. 342 A), rarely one-seeded and indehiscent : the seed frequently 

 contains scanty endosperm. The flowers are solitary and axillary, or in 

 racemes. The leaves are only rarely entire, usually palmately or pinnately 

 compound, with often large stipules (Fig. 28 C), which are sometimes spines 

 (Kobinia). 



Tribe 1. Sophorece. Stamens all free : leaves usually compound pinnate : 

 trees or shrubs. Species of Sophora, Cladrastis, and Virgilia, are cultivated. 



Tribe 2. Podalyriece. Stamens all free : leaves usually simple or ternate 

 shrubs or herbs. Species of Baptisia and Thermopsis are cultivated as herbace- 

 ous plants in gardens. 



Tribe 3. Genistecs. Stamens usually monadelphous : leaves simple or com- 

 pound ternate. 



In Ulex, the Whin, Gorse or Furze, Genista the Green-weed, Cytisus (Saroth- 

 amnus) the Broom, andLupinus, the stamens are monadelphous; in Genista the 

 leaves are simple ; in Cytisus the leaves are ternate ; in Ulex the leaves are 

 ternate in seedlings, but in mature plants they are scaly or spinous ; inLupinus 

 the leaves are palmately compound. Cytuus Laburnum is a well-known flower- 

 ing tree. 



Tribe 4. Trifoliea. The posterior stamen is usually free; leives ternate, 

 and leaflets with serrate margins. 



In Medicago (Medick). Melilotus, and Trifolium, the stamens are diadelphous : 

 in Ononis, the Eest-harrow, they are monadelphous. Trifolium is the Clover : 

 the stamens are partially adnate to the corolla ; the withered corolla persists 

 and encloses the small legume : flowers in capitulaj T. pratense, the Eed 

 Clover, T. repens, the White Clover, and T. liybridum, the Alsike Clover, which 

 are common in meadows, and T. incarnatum, from the East, are cultivated. 

 Medicago has usually a spirally-wound legume, and a deciduous corolla ; M. 

 falcata and lupulina are common ; M. saliva, Lucerne, is cultivated. Melilotug 

 (Melilot) has a globular legume ; M. alba and altissima are common on the 

 banks of streams. Trigonella is the Fenugreek. 



Tribe 5. Lotece. Stamens diadelphous, the posterior stamen being free : 

 leaves pinnate ; leaflets sessile, entire. 



Lotu* corniculatus, the Bird's-foot Trefoil, with a beaked carina and nearly 

 straight legume, is common in meadows. In Anthyllis, the Kidney-Vetch, the 

 stamens are monadelphous at first, the posterior stamen becoming more or less 

 separate: Anthyllis Vulneraria, Ladies' Fingers or Wouudwort, is common in 

 dry pastures. 



Tribe 6. Galegece. Stamens diadelphous : leaves multijugate imparipinnate ; 

 leaflets stalked. 



Indigofera tinctoria, in the East Indies, produces Indigo. Glycyrrhiza is the 

 Liquorice. Colutea, the Bladder Senna, has an inflated fruit : C. arborescens 

 and various species of Caragana are cultivated as ornamental plants. Robinia 

 Pseu'lacacia, the false Acacia, is a native of North America, but it has become 

 naturalized. Amorpha fruticosa is a common shrub from North America. 

 Astragalus has a legume with a spurious longitudinal dissepiment : very many 

 species of it occur, especially in the East. 



Tribe 7. Hedyare<e. Leaves imparipinnate ; stamens diadelphous : fruit a 



