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Moore, T., Ayres, W.P., Gardeners’ magazine of botany, horticulture, floriculture, and natural science (1850-1851)
Gard. Mag. Bot.

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name cited:
Penstemon azureus Benth.
name recognized:
Penstemon azureus Benth.

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drawing: S. Holden

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family: Scrophulariaceae
subfamily: Antirrhinoideae
tribe: Cheloneae

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epithet cited: azureus,-a,-um

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epithet recognized: heterophyllus,-a,-um

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Illustration contributed by:

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link to this page:
https://www.plantillustrations.org/illustration.php?id_illustration=445283

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