Stinking Milkvetch

Jonesiella mearnsii Rydberg, sp. nov
A perennial; stem stout, 5 dm. high or more, erect, more or less sulcate, glabrous; leaves spreading, 7-15 cm. long, the rachis glabrous; stipules broadly deltoid, 5-10 mm. long, thin; leaflets 15-19, oval or elliptic, often retuse at the apex, glabrous, rather thick, 1-2 cm. long, 5-12 mm. wide; peduncles 7-15 cm. long, erect; racemes 4-7 cm. long, many-flowered; bracts lanceolate to deltoid, 5—7 mm. long, acuminate; pedicels 2 mm. long; flowers drooping; calyx sparingly pilose, the tube 5 mm. long, the teeth subulate, 3 mm. long; corolla white, the keel barely tipped with purple; banner about 18 mm. long, obovate; wings shorter, the blade oblanceolate, longer than the claw, with a large reflexed auricle; keel-petals still shorter, the blade semi-orbicular, with a very large basal auricle; pod (not mature) ellipsoid, nearly 3 cm. long and fully 1 cm. wide, glabrous.
Type collected at Fort Verde, Arizona, in May 1887, Edgar A. Mearns 163 (herb. N. Y. Bot. Card.).
Distribution: Arizona, Utah, and New Mexico.

Jonesiella praelonga (Sheldon) Rydberg
Astragalus procerus A. Gray Proc. Am. Acad. 13: 369. 1878. Not .4. procerus Boiss. & Haussk.
1872. Astragalus praelongus Sheldon, Minn. Bot. Stud. 1: 23. 1894. Astragalus Paltersoni procerus M. E. Jones, Proc. Calif. Acad. II. 5: 636. 1895. Astragalus Paltersoni praelongus M. E. Jones, Contr. W. Bot. 10: 65. 1902. Phacopsis praelonga Rydb. Bull. Torrey Club 32: 661. 1906. Rydbergiella praelonga Kedde 8: Sydow, Bot. Jahresb. 33': 534. 1906.
A perennial; stems 5-10 dm. high, striate, glabrous; leaves 1-15 cm. long, the raehis glabrous; stipules broadly deltoid, 4—5 mm. long; leaflets 13-17, oval or obovate, 1-3 cm. long, 5-18 mm. wide, glabrous on both sides, rounded to cuneate at the base, rounded or retuse at the apex; peduncles about 1 dm. long; racemes rather dense, 5-8 cm. long; bracts lanceolate, 2-3 mm. long, about equaling the pedicels; calyx puberulent with fine white hairs, the tube about 6 mm. long and 3 mm. broad, the teeth deltoid or lance-deltoid, 1.2-2 mm. long; corolla ochroleucous, 18-20 mm. long; banner obovate, moderately arcuate; wings slightly shorter, the blade oblanceolate, falcate, longer than the claw, with a large basal auricle; keel-petals shorter and broader, the blade lunate, almost semiorbicular, rounded at the apex; pod according to original description about 2.5 cm. long, short-stipitate, oval in outline, obtuse, glabrous; mature pod not seen.
Type locality: Near St. Thomas, Nevada, at the confluence of Muddy River with the Virgin. Distribution: Southern Nevada and southwestern Utah.

Jonesiella rothrockii (Sheldon) Rydberg
Astragalus Rothrockii Sheldon, Minn. Bot. Stud. 1: 174. 1894.
A perennial; stem 5 dm. high or more, striate, glabrous or nearly so, sometimes tinged with brown; leaves ascending, 1-1.5 dm. long, the raehis glabrous; stipules broadly deltoid, about 4 mm. long, reflexed; leaflets 13-21, oval to oblong, 1-2.5 cm. long, 5-8 mm. wide, glabrous, rather thick; peduncles about 1 dm. long, strict, striate or sulcate; racemes dense, manyflowered, 2-4 cm. long; bracts lanceolate, 3 mm. long; pedicels 2 mm. long; flowers drooping; calyx sparingly white-pilose, the tube 5 mm. long, 3 mm. broad, the teeth lance-subulate, 3 mm. long; corolla ochroleucous ; banner obovate, moderately arched, 18-20 mm. long; wings somewhat shorter, the blade oblanceolate, with a rather large auricle; keel-petals much shorter, the blade broadly lunate, almost semicircular, rounded and slightly purple-tipped at the apex; pod rounded-ovoid, about 2 cm. long, 1 cm. wide, 1.5 cm. thick, cross-reticulate, puberulent when young, the partial septum about 2 mm. broad; seeds brown, obliquely reniform, 3.5 mm. long.
Type locality: New Mexico.
Distribution: New Mexico and Arizona.

Jonesiella recedens (Greene) Rydberg, sp. nov
Rydbergiella praelonga Rydb. Fl. Rocky Mts. 501, in part. 1917. Astragalus recedens Greene, Mss.
A perennial, with a woody root; stems several, sometimes purple-tinged, striate, glabrous, 3-5 dm. high; leaves ascending, 7-12 cm. long, the rachis glabrous; stipules deltoid, 4 mm. long, reflexed; leaflets 15-19, broadly oval or obovate, more or less retuse at the apex or those of the upper leaves elliptic and rounded at the apex, 1-3 cm. long, 5-12 mm. wide, glabrous or nearly so; peduncles 10-15 cm. long, striate; racemes dense, 2-6 cm. long; bracts lanceolate, 2-3 mm. long; pedicels 2 mm. long; flowers many, drooping; calyx usually with scattered short black hairs, rarely glabrate, the tube 5 mm. long, the teeth subulate, 3 mm. long; corolla ochroleucous or white, about 2 cm. long, the keel purple-tipped; banner obovate, moderately arcuate; wings slightly shorter, the blade oblanceolate, longer than the claw, with a rather large auricle; keel-petals shorter, the blade broader, semi-orbicular; pod ellipsoid, acute at each end, cross-reticulate, puberulent when young, 2.5-3 cm. long, 8 mm. wide, 12 mm. thick, slightly sulcate on both sutures, the partial septum fully 2 mm. broad.
Type collected at Arboles, Colorado, June 1899, Baker 432 (herb. N. Y. Bot. Gard). Distribution: Colorado, New Mexico, and Utah.

Perennial, Herbs, Stems woody below, or from woody crown or caudex, Taproot present, Nodules present, Stems erect or ascending, Stems less than 1 m tall, Stems solid, Stems or young twigs glabrous or sparsely glabrate, Leaves alternate, Leaves petiolate, Stipules conspicuous, Stipules membranous or chartaceous, Stipules persistent, Stipules free, Leaves compound, Leaves odd pinnate, Leaf or leaflet margins entire, Leaflets opposite, Leaflets 10-many, Leaves hairy on one or both surfaces, Inflorescences racemes, Inflorescence axillary, Bracts very small, absent or caducous, Flowers zygomorphic, Calyx 5-lobed, Calyx glabrous, Petals separate, Corolla papilionaceous, Petals clawed, Petals ochroleucous, cream colored, Petals orange or yellow, B anner petal narrow or oblanceolate, Wing petals narrow, oblanceolate to oblong, Wing tips obtuse or rounded, Keel petals auriculate, spurred, or gibbous, Keel tips obtuse or rounded, not beaked, Stamens 9-10, Stamens diadelphous, 9 united, 1 free, Filaments glabrous, Style terete, Style persistent in fruit, Fruit a legume, Fruit stipitate, Fruit unilocular, Fruit freely dehiscent, Fruit oblong or ellipsoidal, Fruit or valves persistent on stem, Fruit fleshy, Fruit coriaceous or becoming woody, Fruit exserted from calyx, Fruit beaked, Fruit glabrous or glabrate, Fruit 11-many seeded, Seeds cordiform, mit-shaped, notched at one end, Seed surface smooth, Seeds olive, brown, or black.

Astragalus praelongus (stinking milkvetch) is a perennial plant in the legume family (Fabaceae) found in the Colorado Plateau and Canyonlands region of the southwestern United States.: 43  It's fleshy seedpods become woody with age.: 43  It grows in soils containing selenium.: 43 

A. praelongus var. ellisiae was named for Charlotte Cortlandt Ellis, who collected the holotype specimen in the Sandia Mountains of New Mexico near where she lived.