140 KEY AND FLORA 



1. P. sativum L. COMMON PEA. Annual. Smooth and covered 

 with a bloom. Leaflets usually 2 pairs; tendrils branching; stipules 

 large, ovate, rather heart-shaped at the base. Peduncle several-flowered. 

 Flowers white, bluish, reddish, or variegated. Pods large ; seeds glob- 

 ular or somewhat flattened and wrinkled. There are many varieties, 

 differing greatly in size, of the plant and of the fruit. Cultivated from 

 Europe (V). 



XXIV. PHASEOLUS L. 



Twining herbs. Leaves pinnate, of 3 leaflets. Flowers in 

 axillary racemes. Calyx 5-toothed or 5-cleft, the two upper 

 teeth often more united than the others. Keel of the corolla 

 coiled in a spiral, together with the included stamens and 

 style. Stamens diadelphous (9 and 1). Style bearded length- 

 wise on the upper side ; stigma oblique or on the side of the 

 style. Pod linear, 2-valved, several-many-seeded, tipped with 

 the remains of the style. 



1. P. perennis Walt. WILD BEAN. Perennial, climbing high. 

 Flowers small, purple. Pods curved, drooping, 4-6-seeded. Thickets. 



2. P. vulgaris L. COMMON or KIDNEY BEAN. Twiners (or some 

 varieties low and branching). Racemes of white or purplish flowers 

 shorter than the leaves. Pods straight or nearly so. Seeds not much 

 flattened. Cultivated, probably from tropical America. 



3. P. multiflorus Willd. SPANISH BEAN, SCARLET RUNNER. Stems 

 twining high. Flowers large and showy, white, scarlet, or variegated ; 

 racemes longer than the leaves. The scarlet variety is the most com- 

 monly cultivated, for ornament. From tropical America. 



48. GERANIA.CEJE. GERANIUM FAMILY 



Herbs or small shrubs. Leaves simple, usually with glan- 

 dular hairs which secrete an aromatic oil. Flowers bisexual, 

 axillary and solitary or clustered, actinomorphic or nearly so, 

 hypogynous, their parts in fives. Stamens 5 or 10, monadel- 

 phous at the base. Carpels 5, each 2-ovuled, splitting away 

 with their long styles when ripe from a central axis and thus 



scattering the seeds. 



I. GERANIUM L. 



Herbs, rarely shrubs. Leaves with stipules, opposite or 

 alternate, usually cut or lobed. Flowers actinomorphic on 



