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Amsonia
Family: Apocynaceae
Amsonia image
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  • Gleason & Cronquist
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JANAS 27(2)
PLANTS: Perennial herbs with milky juice. STEMS: several, erect or ascending from a woody rootstock. LEAVES: alternate, hairy or glabrous, ovate to linear, gradually to abruptly narrowing apically. INFLORESCENCE: a terminal, compound cyme. FLOWERS: calyx green, the lobes equal, accuminate; corolla white, blue, or pinkish, salverform, the lobes spreading to reflexed; stamens included in the corolla tube, the anthers not connivent; ovules numerous. FRUIT: terete or constricted between the seeds. SEEDS: several, naked, corky, cylindrical or elliptic. NOTES: 14 spp. in U.S. and n Mex.; 1 sp. in Japan. (for Dr. C. Amson). McLaughlin, S. P. 1982. Ann. Missouri Bot. Gard. 69:336-350. REFERENCES: McLaughlin, Steven, P. 1994. Apocynaceae. J. Ariz. - Nev. Acad. Sci. Volume 27, 164-168.
Vascular plants of NE US and adjacent Canada
Cal deeply 5-parted; cor salverform, villous in the throat, its lobes lanceolate; anthers separate; ovaries 2, without nectaries; ovules many; follicles elongate, linear, cylindric or somewhat moniliform; seeds naked; erect perennial herbs with alternate or irregularly scattered lvs and terminal cymes of small but handsome blue fls. 25, N. Amer. and Japan.

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

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Species within checklist: Kansas
Amsonia amsonia
Image of Amsonia amsonia
Amsonia glaberrima
Image of Amsonia glaberrima
Amsonia illustris
Image of Amsonia illustris
Amsonia salicifolia
Image of Amsonia salicifolia
Amsonia tabernaemontana
Image of Amsonia tabernaemontana
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