A Checklist of the Vascular Plants of Washington State
Hosted by the University of Washington Herbarium, Burke Museum
Hosted by the University of Washington Herbarium, Burke Museum
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Apocynaceae » Asclepias cryptoceras
Asclepias cryptoceras S. Watson[HC, HC2]
Humboldt milkweed, pallid milkweed
Publication: Botany Fortieth Parallel 283, pl. 28, f. 1-4. 1871.
Origin: Native
Herbarium search: CPNWH
Last updated 6/3/2020 by David Giblin.
Synonyms & Misapplied Names:
Asclepias cryptoceras S. Watson ssp. davisii (Woodson) Woodson[KZ99]
Asclepias cryptoceras S. Watson var. davisii (Woodson) W.H. Baker
Asclepias davisii Woodson
