Populus angustifolia E.James

, Account Exped. Pittsburgh [ed. Philadelphia] 1: 497 (1822).
IPNI Life Sciences Identifier (LSID)
Account of an expedition from Pittsburgh to the Rocky Mountains, performed in the years 1819 and '20, by order of the Hon. J. C. Calhoun, sec'y of warunder the command of Major Stephen H. Long. From the notes of Major Long, Mr. T. Say ...Philadelphia
1: 497
Date of Publication
dt. 1823; issued 31 Dec 1822
Family as entered in IPNI

Type Information

Rocky Mountains
Distribution Of Types
United States of America (Northern America)


James provided a validating diagnosis: The long leaved cotton-wood ... is found intermixed with the common cotton-wood, resembling in size and general aspect. Its leaves are long and narrow, its trunk smoother, and its branches more slender and flexile than those of Populus anuglata. Some of its fruits was fortunately still remaining ...


Basionym of
Populus balsamifera var. angustifolia (E.James) S.Watson, Botany [Fortieth Parallel] 327 (1871).
Nomenclatural link
Populus fortissima A.Nelson & J.F.Macbr., Bot. Gaz. 56: 473 (1913).