Dig deeper at SERNEC, a consortium of southeastern herbaria.
Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Lamiids: Gentianales
WEAKLEY'S FLORA (11/30/12):
Asclepias perennis
FAMILY
Apocynaceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Asclepias perennis
FAMILY
Asclepiadaceae
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (1968) 157-01-002:
Asclepias perennis
FAMILY
Asclepiadaceae
COMMON NAME:
Smoothseed Milkweed, Swampforest Milkweed, Swamp Milkweed
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USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_aspe_001_lvd
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John B. Nelson jbn_5745134374_99a0cca6bf
May
Flowers in 1-2" wide axillary umbels, hoods with prominent protruding horns, per Atlantic Coastal Plain Wildflowers.
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JK Marlow jkm190702_9698
July Greenville County SC
In cultivation
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JK Marlow jkm190702_9700
July Greenville County SC
In cultivation
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JK Marlow jkm190702_9701
July Greenville County SC
In cultivation
The 12-24" stems are conspicuously leafy, per Atlantic Coastal Plain Wildflowers.
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JK Marlow jkm190702_9702
July Greenville County SC
In cultivation
Leaves elliptic to lanceolate, 6-12cm long, 1-3cm wide, per Vascular Flora of the Carolinas.