Pinus ponderosa Douglas ex C.Lawson
Torrey, J., Reports of explorations and surveys, to ascertain the most practicable and economical route for a railroad from the Mississippi River to the Pacific Ocean in 1853-6 (1856)
Pacif. Railr. Rep.
vol. 6 (1857)
p. 36 f. 12
name cited:
Pinus ponderosa Douglas ex C.Lawson
name recognized:
Pinus ponderosa Douglas ex C.Lawson
family: Pinaceae
epithet: ponderosus,-a,-um
Illustration contributed by:
Marine Biological Laboratory (MBL) and Woods Hole Oceanographic Institution (WHOI)
link to this page:
https://www.plantillustrations.org/illustration.php?id_illustration=382796
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Pinus ponderosa Douglas ex C.Lawson (Pinaceae) J. Torrey, Pacif. Railr. Rep., vol. 6 (3. Botanical report): p. 36, fig. 12 (1857)