©The World Botanical Associates Web Page
Prepared by Richard W. Spjut
May 2004, Apr 2011

Amsonia eastwoodiana

Utah—Great Basin Desert. Garfield Co., 1520 m. Blackbrush (Coleogyne) on red loam.

Low perennial from a subterranean woody rhizome, without milky juice; leaves mostly alternate; flowers bluish white with yellow throat, turning dark bluish-black. Locally common. Separate samples of root-rhizome (rt-rh) and aerial parts (st-lf-fl-ft). Coll.: Richard Spjut & Susan Spjut 16303, 16-May-08.



Amsonia hirtella
Maricopa Co., AZ
Spjut 3311,
23 April 1973

Amsonia hirtella
Maricopa Co., Tortilla Creek, AZ
27 May 1965, Barr 65-228

Amsonia tomentosa
E San Bernardino Co., CA
Spjut 15256, May 2003

Amsonia tomentosa
E San Bernardino Co.,, CA
Spjut 15255,
May 2003

Amsonia tomentosa
E San Bernardino Co., CA
May 1978

Amsonia tabernaemontana

Furmanowa M and L. Rapczewska.  1977. Amsonia tabernaemontana Walter (Apocynaceae) in tissue culture—growth and alkaloid production. Acta. Pol. Pharm. 34(2): 215–219.

Morin H.,  J. Lemen and H. Pourrat.  1955.  Pharmacodynamic study of tabersonine, an alkaloid extracted from the seeds of Amsonia tabernaemontana Walt. (Apocyanaceae).
Ann. Pharm. Fr. 13(2): 123–126. In French.

Panas J. M., A.  M. Morfaux, L. Olivier and J. Le Men. 1972.  Alkaloids of leaves of Amsonia tabernoemontana Walt., Apocynaceae.  Ann. Pharm. Fr. 30(4):273-276. In French.

Zabolotnaia E. S.,  A. S. Belikov, S. P. Ivashchenko and M. M.  Molodozhnikov.  1964.  Alkaloids of Amsonia tabernaemontana Walt. Med. Prom. SSSR. 18: 28–29. In Russian..

Zsadon B., L. Decsei, K. Otta, M. Szilasi and P. Kaposi. 1974.  Isolation of aspidosperma alkaloids and rutin from Amsonia tabernaemontana Walt. Acta Pharm. Hung. Jun suppl 1: 74–79. In Hungarian.