158 xlvti. § papilionaceje (baker). [Arachis. 



indehiscent, subtorulose, but not articulated, continuous within. Seeds 

 1—3, irregularly ovoid. — Low, often prostrate herbs. 



A small genus, the other species confined to Brazil. 



1. A. hypogaea, Linn. ; DC. Prod. ii. 474. Stems 1-2 ft. long, 

 herbaceous, difluse, the branches clothed especially above with spreading 

 hairs. Stipules an inch deep, the lower half adnate, the points lanceo- 

 late. Petioles 1-1J in. long, silky. Leaflets in two pairs without a 

 terminal one, obovate, 1-1 J in. long by more than half as broad. 

 Flowers axillary, solitary, on long slender pedicels, only the lower ones 

 fertile. Pod an inch long by half as thick. 



Cultivated throughout otrr bounds as an article of food, as it is everywhere in the 

 Tropics. It is probably a native of Brazil, to which the six other species of the, genus 

 belong exclusively. (See De Candolle's " Geographies Botanique." Vol. ii. 964). It is 

 eaten roasted, boiled or converted into an oil. 



42. ZORNIA, Gmel. ; Benth. et Hook. f. Gen. Plant, i. 518. 



Calyx membranous, the two upper teeth subconnate, the lowest lan- 

 ceolate oblong, the two lateral ones much shorter. Standard sub- 

 orbicular, unguiculate j wings obliquely obovate or oblong ; keel 

 incurved, subrostrate. Stamens all connate in a closed tube ; anthers 

 alternately longer and shorter, attached near the base and versatile. 

 Ovary sessile, multiovulate ; style filiform ; stigma small, terminal. 

 Pod compressed, the upper suture nearly straight, the lower deeply 

 sinuated, the articulations indehiscent, smooth or echinate. — Herbs, 

 with equally pinnate, often punctate leaves. 



A small genus, one polymorphous species everywhere in the Tropics, the rest mainly 

 American, one also Cape and Angolan. 



Leaflets two 1. Z. diphylla. 



Leaflets four 2. Z. tetraphylla^ 



1. Z. diphylla, Pers. Syn. ii. 318. Stems a foot or more long, 

 slender, herbaceous, glabrous, diffusely branched from the base. Sti- 

 pules lanceolate. Petioles \— § in. long, the leaflets in a single pair at 

 the apex, lanceolate, 1-1 \ in. long, |-f in. broad, the edge slightly 

 ciliated, the surface glabrous. Flowers in lax axillary stalked racemes 

 2—3 in. long, 6—8 hidden each by a pair of persistent bracts, which 

 are ovate, rigid} \-% in. long, slightly bristle-ciliated. Calyx 

 1J— 2 lines long, scarious. Corolla J— f in. long, purplish. Pod some- 

 times exceeding the bracts, articulations 2-4, the bristles \-\ line 

 long.— Schum. et Thonn. PI. Guin. 358. Benth. Fl. Nigr. 301. Z. glo- 

 chidiata, Reich, in Sieb. PI. Seneg. 40. DC. Prod. ii. 316. A. Eich. 

 Fl. Abvss. i. 201. 2. gracilis, DC. Prod. I.e. Z. angustifolia, Guill. et 

 Perr. Fl. Seneg. 203. 'Klotzsch in Peters' Mossamb. Bot. 43. 



Upper Guinea. Senegam bia, Perrottet! Sieber! Heudeht I &c. Sierra Leone, 

 Afzeliu8 1 Guinea proper, Barter I Vogel! Don! 

 Stacked by the Foulahs for horse provender. 



