Comprehensive Description
provided by North American Flora
Homalobus tenellus (Pursh) Britton; Britt. & Brown, 111. Fl. 2: 305. 1897.
Astragalus tenellus Pursh, Fl. Am. Sept. 2: 473. 1814. ■Ervum mullijlorum Pursh, Fl. Am. Sept. 2: 739. 1814. Homalobus multifiorus T. & G. Fl. N. Am. 1: 351. 1838.
Homalobus nigrescens Nutt.; T. & G. Fl. N. Am. 1: 351, in part, as rynonym. 1838. Astragalus nigrescens A. Gray, Am Jour. Sci. II. 33: 410. 1862. Astragalus multifiorus A. Gray, Proc. Am. Acad. 6: 226. 1864. Tragacantha tenella Kuntze, Rev. Gen. 942. 1891.
A perennial, with a cespitose caudex, closely resembling the preceding; stems 3-5 dm. high, sparingly strigose; stipules ovate to lanceolate, connate; leaves 5-10 cm. long; leaflets 13-21, linear or oblong, obtuse, 1-2 cm. long, 1-3 mm. wide, glabrous on both sides, or with scattered hairs beneath; racemes 4-8 cm. long, short-peduncled, many-flowered; flowers as in the preceding, but the corolla usually smaller, rarely more than 6 mm. long; pod glabrous, stipitate, the stipe 3-4 mm. long, the body 8-10 mm. long, 3 mm. wide, reticulate; seeds 3 mm. long, 1.5 mm. wide.
Tyte locality: Banks of the Missouri. Montana. Distribution: Manitoba to Yukon, Nevada, and Colorado.
- bibliographic citation
- Per Axel Rydberg. 1919. (ROSALES); FABACEAE; PSORALEAE. North American flora. vol 24(1). New York Botanical Garden, New York, NY
Comprehensive Description
provided by North American Flora
Homalobus dispar Nutt.; T. & G. Fl. N. Am. 1: 350. 1838
. Orobus dispar Nutt. Gen. 2: 95. 1818.
Phaca nigrescens Hook. Fl. Bor. Am. 1: 143. 1831. • Physondra dispar Raf. Atl. Jour. 145. 1832.
Homalobus nigrescens Nutt.; T. & G. Fl. N. Am. 1: 351, in part, as synonym. 1838.
A perennial, with a cespitose rootstock or caudex; stems 2-5 dm. high, sparingly strigose or glabrate, striate; stipules ovate or deltoid, connate, the upper green, the lower scarious, soon blackening; leaves 4—6 cm. long, blackening in drying; leaflets 11—21, linear-oblong to oval, 8-15 mm. long, 2-6 mm. wide, obtuse or acute, glabrous above, with scattered hairs beneath; racemes many-flowered, lax, 4-8 cm. long, very short-peduncled; bracts subulate, 2 mm. long; calyx sparingly strigose, the tube 2 mm. long, the teeth lanceolate, 1 mm. long; corolla ochroleucous, the keel purple-tipped; banner 6-7 mm. long, obovate, retuse; wings 5-6 mm. long, the blade broadly obliquely oblanceolate, with a rounded basal auricle; keel-petals slightly shorter, with a rounded inflexed tip and a rounded basal auricle, the blade somewhat longer than the claw; pod short-stipitate, ellipsoid, acute at each end, about 1 cm. long and 4 mm. wide, glabrous, reticulate, the stipe shorter than the calyx; seeds black, oblong-reniform, 3 mm. long, 1.5 mm. broad.
Type locality: Hills near Fort Mandan. North Dakota.
Distribution: Saskatchewan and Alberta to Wyoming, Colorado, and western Nebraska.
- bibliographic citation
- Per Axel Rydberg. 1919. (ROSALES); FABACEAE; PSORALEAE. North American flora. vol 24(1). New York Botanical Garden, New York, NY
Comprehensive Description
provided by North American Flora
Homalobus standleyi Rydb. Bull. Torrey Club 50: 182. 1923
Astragalus tenellus dementis F. Macbr. Contr. Gray Herb. 65: 35, in part. 1922.
A perennial, with a cespitose caudex; stems 2-3 dm. high, sparingly strigose; stipules deltoid, about 2 mm. long, connate; leaves 3-5 cm. long; leaflets 9-15, elliptic or oblong, 5-10 mm. long, 2-3 mm. wide, glabrous above, strigose beneath; racemes lax, including the short peduncle 4-7 cm. long; bracts lance-subulate, 1-2 mm. long; calyx strigose, the tube 2 mm. long, the teeth subulate, fully 1 mm. long; corolla white or tinged with purple, the keel purpletipped; banner 6 mm. long, obovate, slightly retuse; wings 5 mm. long; keel-petals 5 mm. long, with a rounded apex; pod about 1 cm. long, 3 mm. broad, strigose, elliptic-oblong, acute at each end, short-stipitate, the stipe shorter than the calyx-tube.
Type locality' : Ponchuelo Creek, New Mexico. Distribution: Known only from the type locality.
- bibliographic citation
- Per Axel Rydberg. 1919. (ROSALES); FABACEAE; PSORALEAE. North American flora. vol 24(1). New York Botanical Garden, New York, NY
Comprehensive Description
provided by North American Flora
Homalobus strigulosus Rydb. Bull. Torrey Club 34: 420. 1907
Astragalus tenellus f. strigulosus F. Macbr. Contr. Gray Herb. 65: 34. 1922.
A perennial, with a cespitose caudex; stem erect or ascending, branched, 1-3 dm. high, strigulose; stipules ovate, short, blackening; leaves 3-4 cm. long; leaflets 11-17, linear, acute, 8-12 mm. long, 1-2 mm. wide, thick, glabrous above, strigose beneath; racemes lax, including the short peduncle 2-4 cm. long, 4— 7-flowered; bracts subulate, minute; calyx strigulose, the tube 1.5-2 mm. long, the teeth subulate, less than 1 mm. long; corolla ochroleucous, similar to that of the preceding; banner 6 mm. long; wings about 5 mm. long and keel-petals fully 5 mm. long; pod strigulose, shining, stipitate, the stipe about 3 mm. long, the body 1-10 mm. long, 3 mm. wide.
Type locality: East Humboldt Mountains, Nevada. Distribution: Utah and eastern Nevada.
- bibliographic citation
- Per Axel Rydberg. 1919. (ROSALES); FABACEAE; PSORALEAE. North American flora. vol 24(1). New York Botanical Garden, New York, NY
Comprehensive Description
provided by North American Flora
Homalobus clementis Rydb. Bull. Torrey Club 31: 563. 1904
Astragalus tenellus Clementis F. Macbr. Contr. Gray Herb. 65: 35. 1922.
A perennial, with a cespitose caudex or rootstock; stems ascending or erect, 2-3 dm. high,
sparingly strigose or glabrate; stipules broadly triangular, acuminate, connate, about 3 mm.
long; leaves 5-8 cm. long; leaflets 11-21, oblong or lanceolate, acute, 7-12 mm. long, glabrous
above, sparingly strigose beneath; racemes 8-12-flowered, including the petiole 7-10 cm. long;
bracts lanceolate, 2 mm. long; calyx strigose with black hairs, the tube 2.5-3 mm. long, the
teeth about 1.5 mm. long; corolla purplish; banner 7-8 mm. long, obovate; wings 6-7 mm. long,
the blade obliquely oblanceolate; wing-petals 5—6 mm. long, with a rounded tip; pod oblong,
sessile, about 1 cm. long and 4 mm. wide, black-hairy, the upper suture almost straight; seeds
black, obliquely reniform, 2.5 mm. long, nearly 2 mm. broad.
Type locality: Sangre de Cristo, Colorado. Distribution: Colorado.
- bibliographic citation
- Per Axel Rydberg. 1919. (ROSALES); FABACEAE; PSORALEAE. North American flora. vol 24(1). New York Botanical Garden, New York, NY