The Milkweed Family in the Columbia River Gorge of Oregon and Washington

Apocynaceae

formerly the Asclepiadaceae

Mexican Whorled Milkweed, Narrowleaf Milkweed, Narrow-leaf Milkweed: Asclepias fascicularis (Synonyms: Asclepias fascicularis, Asclepias mexicana) -

Greek Milkweed, Showy Milkweed: Asclepias speciosa (Synonym: Asclepias giffordii) -