Amsonia tomentosa var. stenophylla Kearney & Peebles

Amsonia arenaria Standley, Proc. Biol. Soc
Wash. 26: 117. 1913,
Am-sonia filiformis A.'Nelson, Am.' Jour. Bot. 18: 433. 1931.
Stems 2-4 dm. tall, tomentose; leaves alternate to subverticillate, narrowly oblonglanceolate to subfiliform, 4^6 cm. long, 1-5 mm. broad, tomentulose, sessile; inflorescence somewhat condensed, barely surpassing the foliage, bearing several to numerous, rather small, pale-lead-blue flowers; pedicels 0.5-3 mm. long; calyx-lobes linearsubulate, 4-8 mm. long, tomentulose; corolla glabrous externally, the tube 8-11 mm. long, about 1.5 mm. in diameter at the base, somewhat inflated at the insertion of the stamens, sharply constricted at the orifice, the lobes 5-9 mm^ long, spreading; follicles relatively stout, conspicuously articulatemoniliform, 5-8 cm. long, nearly glabrous or inconspicuously puberulent.
Type locality: Between Strauss and Anapra, Dona Ana County, New Mexico. Distribution: Kxtreme western Texas to southeastern Arizona; Chihuahua.

Amsonia eastwoodiana Rydb. Bull. Torrey
Club 40: 465. 1913.
Wholly glabrous, the stems 3-5 dm. tall; leaves alternate, subsucculent to firmly membranaceous, oblong-lanceolate, or the upper linear-lanceolate, 3-5 cm. long, 3-10 mm. broad, acuminate, sessile or subsessile; inflorescence compact, barely surpassing the foliage, bearing several to rather numerous pale-lead-blue flowers; pedicels 4r-6 mm. long; calyx-lobes linearlanceolate, acuminate, 2-3.5 mm. long; corolla-tube 9-17 mm. long, about 1.5 mm. in diameter at the base, somewhat inflated over the stamens, sharply constricted at the orifice, the lobes 5-7 mm. long, spreading; follicles relatively stout, conspicuously articulate-moniliform, 5-8 cm. long, glabrous.
Type i.ocality: Moab, [Grand County,] Utah. Distribution: Southern Utah and northern Arizona.