Classification Hierarchy
Kingdom Plantae
Subkingdom Tracheophyta
Superdivision Spermatophyta
Division Magnoliophyta
Class Magnoliopsida
Subclass Asteridae
Order Gentianales
Family Apocynaceae
Genus Asclepias
Species Asclepias purpurascens
Purple milkweed

Date: June 29, 2011. Location: Rochester cemetery(map)

BONAP, FNA, ITIS, USDA, VPI

Scientific Name: Asclepias purpurascens named after the Greek god of healing - Asclepius. purpurascens=purple-ish

Common Name: Purple milkweed

Origin: Native

Notes: rare to infrequent in Iowa - dry to damp woods, thickets and openings also disturbed areas and sandy prairies along the edges of woodlands.

Additional references: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21.

Field Marks for Identification:

Flowers: corolla and hoods red or purple, pedicels and peduncles densely tomentulose; inflorescence, 1 terminal or 2 or more umbels axial in the upper part of the plant; fruit, follicles erect, at tips of deflexed pedicel, canescent-tomentosem lance-ovoid, 10 to 15 cm long.

Leaves: opposite decussate, simple, elliptical or ovate-oblong contracted at base to a short petiole. margins entire. Sometimes the margins are wavy and fold up from the mid vein.

Glossaries of botanical terms: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10.

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