Wand Riverhemp

Daubentonia virgata (Cav.) Rydberg
Aeschynomene virgata Cav. Ic. 3: 47. 1794.
Coronilla virgata Willd. Sp. PI. 3: 1 148. 1800.
Sesbania virgata Poir. in Lam. Encvc. 7: 129. 1S06.
Agati virgata Desv. Jour, de Bot. Desv. II. 1: 120. 1813.
Coursetia virgata DC. Ann. Sci. Nat. 4: 92. 1824.
Sesbania tetragona Pamp. Nuovo Giorn. Bot. Ital. II. 14: 604. 1907.
Herbaceous; stem simple, glabrous, about 6 dm. high; stipules setaceous, caducous; leaflets 2S-3S, oblong, rounded at each end, mucronate, 3-4 cm. long, 6-S mm. wide, minutely sericeous when young, soon glabrous; racemes 10-14-flowered, 3-6 cm. long, glabrous, the pedicels in flower about 4 mm., in fruit 6-8 mm. long; calyx 4 mm. long, angulate-dentate ; corolla yellow; banner orbicular, deeply emarginate, 13 mm. broad; keel strongly arcuate; pod 4—7 cm. long, 5-8 mm. broad, stipitate, beaked, indehiscent, 4-angled, 4-6-seeded, obscurely subtorulose, the angles scarcely callous, the stipe 5-8 mm. long; seeds 6-7 mm. long, grayish-red.
Type Locality: Described from cultivated specimens, raised from Mexican (?) seeds. Distribution: Mexico.

Perennial, Shrubs, Stems woody below, or from woody crown or caudex, Taproot present, Nodules present, Stems erect or ascending, Stems less than 1 m tall, Stems 1-2 m tall, Stems solid, Stems or young twigs glabrous or sparsely glabr ate, Leaves alternate, Leaves petiolate, Stipules inconspicuous, absent, or caducous, Stipules setiform, subulate or acicular, Stipules deciduous, Stipules free, Leaves compound, Leaves even pinnate, Leaf or leaflet margins entire, Leaflets opposite, Stipels present at base of leaflets, Leaflets 10-many, Leaves glabrous or nearly so, Inflorescences racemes, Inflorescence axillary, Bracts conspicuously present, Bracteoles present, Flowers zygomorphic, Calyx 5-lobed, Calyx glabrous, Petals separate, Corolla papilionaceous, Petals clawed, Petals orange or yellow, Petals bicolored or with red, purple or yellow streaks or spots, Banner petal suborbicular, broadly rounded, Wing petals narrow, oblanceolate to oblong, Wing petals auriculate, Wing tips obtuse or rounded, Keel petals auriculate, spurred, or gibbous, Keel abruptly curved, or spirally coiled, Keel tips obtuse or rounded, not beaked, Stamens 9-10, Stamens diadelphous, 9 united, 1 free, Filaments glabrous, Style terete, Fruit a legume, Fruit stipitate, Fruit unilocular, Fruit tardily or weakly dehiscent, Fruit indehiscent, Fruit elongate, straight, Fruit oblong or ellipsoidal, Fruits quadrangulate, Fruit or valves persistent on stem, Fruit coriaceous or becoming woody, Fruit exserted from calyx, Fruit compressed between seeds, Fruit beaked, Fruit glabrous or glabrate, Fruit 3-10 seeded, Seeds ovoid to rounded in outline, Seed surface smooth, Seeds olive, brown, or black.