76 FAM. 94. 



axillary racemes; calyx somewhat 2-lipped; vexillutn very 

 broad, reflexed; stamens diadelphous, - Apios, Ground-nut 



A. Apios (tuberosa). Roots tuberous; leaflets 5-7, rarely 3, ovate to lanceo- 

 late; racemes often in pairs, shorter than the leaves; corolla chocolate-brown. 

 Low ground. Summer and Fall. 



30. Leaflets 3, stipellate; — twining or prostrate herbs; stipules persis- 



tent; flowers scattered in racemes at the end of the axillary pe- 

 duncles; calyx 5-toothed, the upper two more or less united; 

 stamens diadelphous, style bearded, pods straight or falcate, 



Phaseolus, Bean-vine, Kidney-bean 



P. sinuatus. Trailing; smooth; racemes 6-8 times as long as the leaves; cor- 

 olla pale-purple. Dry pine-land. Summer. 



P. polystachus (perennis). Climbing; pubescent; racemes twice as long as the 

 leaves; corolla purple. Margins of fields. Summer. 



Allied with this genus are: 



Mucuna utilus, Velvet-bean, a twining vine; and Glycine hispida, Soy-bean, 

 an erect branching annual or a vine. Both in cultivation. 



31. Vines with prostrate or twining stems and stipulate 3-foliate leaves; — 



flowers few, in cluster-like racemes at the end of axillary peduncles; 

 calyx slightly 2-lipped, 4 toothed; vexillum auricled at the base; 

 stamens diadelphous, included in the curved keel with the style 

 bent upward; style hairy, appendaged below the stigma, 



Vigna, China Bean, Cow-pea 



V. repens (luteola). Foliage and pods pubescent, peduncles longer than the 

 leaves, corolla yellow. Thickets along the coast. Summer and Fall. 



V. Sinensis. Foliage and pods smooth or nearly so, peduncles usually shorter 

 than the leaves, corolla yellowish tinged with purple. In thickets and cul- 

 tivated. Summer and Fall. 

 31. Vines with prostrate or twining stems and even-pinnate (mostly 4) 

 leaflets; — flowers 5-7 in an axillary spike, calyx 2-lipped; vexillum 

 orange with a red spot, the rest of the corolla yellow; stamens 

 monadelphous; style not hairy. Cultivated, Arachis hypogea, Peanut, Goober 



94 Geraniaceae, Geranium Family. 



Herbaceous or shrubby plants, mostly with pubescent 

 or glandular foliage; the leaves alternate or opposite, lobed 

 or divided, stipulate; flowers on axillary peduncles, regular, 

 5-parted; stamens distinct with versatile anthers, styles 

 united; ovary superior, prolonged into a beak formed by 

 the styles; fruit a capsule (regma), each of the 5 lobes sep- 

 arating elastically from an axis and curling back on the 

 style. 



Sepals 5; petals 5, alternating with 5 glands; stamens 10, rarely 5, 



Geranium, Crane's Bill 

 G. Carolinianum. Stems low, forking; leaves reniform in outline, 5-7 parted, 

 segments 3-lobed, lobes entire or incised; peduncles short, making the flower- 

 clusters dense; sepals awned, petals pink or whitish; fruit hairy, seeds ob- 

 scurely reticulated. Dry soil. Spring and Summer. 

 The Geraniums of the garden belong to Pelargonium, Stork's Bill, with no 



