- the
Wayback Machine Eckenwalder, J.E. (2001). "Key to
species and main crosses". In D.I. ****mann; J.G. Isebrands; J.E.
Eckenwalder; J.
Richardson (eds...
- Mississippi, USA" (PDF).
Palaeontologia Electronica. 22 (2). doi:10.26879/906.
Eckenwalder,
James E. (14
November 2009).
Conifers of the World.
Timber Press. p...
- and
evolution of
vascular plants, New York: W. H.
Freeman and
Company Eckenwalder, J.E. (1980), "Foliar
Heteromorphism in
Populus (Salicaceae), a Source...
-
James Emory Eckenwalder (born 1949 in Neuilly-sur-Seine) is a
Canadian botanist. His
scientific work
deals with the taxonomy, hybridization, and evolution...
- (Supplement 2): 5–6.
Edinburgh University Press. ISBN 0-7486-1409-5
Eckenwalder, J. E. (2009).
Conifers of the World: The
Complete Reference. Timber...
-
States Department of
Agriculture (USDA) – via
Southern Research Station.
Eckenwalder, J.E. (1977). "North
American cottonwoods (Populus, Salicaceae) of sections...
-
original on
September 23, 2021.
Retrieved January 22, 2022.
James E
Eckenwalder.
Conifers of the World, The
Complete Reference. p. 586.
Timber Press...
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synonymous with
Equisetidae Gorozhankin 1904.
Christenhusz et al 2011.
Eckenwalder 2008.
Gernandt et al 2011.
Brown 1826.
Tomlinson 2012.
Brongniart 1828–1837...
-
suggest gnetophytes are the
sister to the Pinaceae. See text for details.
Eckenwalder,
James Emory (3
September 2008). "Conifer". Encyclopædia Britannica....
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species subsumed into
Eckenwalder's Z.
pumila subsp. pumila, and Z. pygmaea,
consisting of the
former species placed by
Eckenwalder in Z.
pumila subsp....
