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

Date: July 1, 2010. Location: Williams prairie (map)

BONAP, FNA, ITIS, USDA, VPI

Scientific Name: Asclepias incarnata

Common Name: Swamp milkweed

Origin: Native; perennial

Notes: found in wet prairies, marshes, and swamps, three to five feet tall, requires full sun and wet or saturated soil.

Additional references: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12.

Field Marks for Identification:

Flowers: July; petals light pink to dark magenta, crown (5 hoods & horns) often lighter in color than corolla, central column white, multiple inflorescences (umbels) terminate the topmost branches; fruit a follicle, upright and smooth.

Leaves: opposite, lance shaped, up to 6inches long, about 4 times longer than wide, margins continuous.

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

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