Engler, H.G.A., natürlichen Pflanzenfamilien (1887-1915)
Nat. Pflanzenfam.
vol. 4(3b):
(1895)
[Nolanaceae, Solanaceae, Scrophulariaceae, Lentibulariaceae, Orobanchaceae, Gesneriaceae, Columelliaceae, Bignoniaceae, Pedaliaceae, Martyniaceae, Globulariaceae, Acanthaceae, Myoporaceae, Phrymaceae, Plantaginaceae]
p. 66 f. 29
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Penstemon glaber Pursh
name cited:
Penstemon glaber Pursh
name recognized:
Penstemon glaber Pursh
family:
Scrophulariaceaesubfamily: Antirrhinoideae
tribe: Cheloneae
epithet:
glaber, glabra, glabrum
Illustration contributed by:
link to this page:
http://www.plantillustrations.org/illustration.php?id_illustration=384140
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synonyms: