Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Lamiids: Gentianales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Asclepias longifolia
FAMILY
Apocynaceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Longleaf Milkweed at Vascular Plants of North Carolina.
See diagrams of milkweed flower structure at Wayne's Word.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Asclepias longifolia
FAMILY
Asclepiadaceae
SYNONYMOUS WITH Taxonomy of Asclepias hirtella & A. longifolia (Apocynaceae) (Turner, 2009)
Asclepias longifolia var. longifolia
SYNONYMOUS WITH A new combination in Asclepias. Phytologia (Farmer & Bell, 1985)
Asclepias longifolia ssp. longifolia
SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 157-01-018:
Asclepias longifolia FAMILY Asclepiadaceae
(?) Manual of the Southeastern Flora (Small, 1933, 1938)
Acerates floridana
COMMON NAME:
Longleaf Milkweed, Savanna Milkweed
To see larger pictures, click or hover over the thumbnails.
)
USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_acfl4_001_lvd
Acerates floridana
)
JK Marlow jkm0505q_07
May Williamsburg County SC
Leaves numerous, linear, glabrous (to sparsely pubescent along veins beneath), per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
)
JK Marlow jkm0505r_31
May Williamsburg County SC
Umbels 3+ (rarely solitary), per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
)
John B. Nelson jbn_7169194147_1f4ba7138b
July Berkeley-Charleston Counties SC
Francis Marion National Forest
)
Richard and Teresa Ware rtw_a_longifolia_3
July
)
Richard and Teresa Ware rtw_a_longifolia_3b
July
Corolla lobes have rose tips; corona horns absent, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
)
Richard and Teresa Ware rtw_a_longifolia_5
July
A. longifolia and A. hirtella are closely related, sometimes treated as varieties or subspecies, per Weakley's Flora (2022).
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Asclepias longifolia
FAMILY
Apocynaceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Asclepias longifolia
FAMILY
Asclepiadaceae
SYNONYMOUS WITH
Taxonomy of Asclepias hirtella & A. longifolia (Apocynaceae) (Turner, 2009)
Asclepias longifolia var. longifolia
SYNONYMOUS WITH
A new combination in Asclepias. Phytologia (Farmer & Bell, 1985)
Asclepias longifolia ssp. longifolia
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 157-01-018:
Asclepias longifolia
FAMILY
Asclepiadaceae
(?)
Manual of the Southeastern Flora (Small, 1933, 1938)
Acerates floridana
1950
Forb
Perennial
Habitat: Wet pine savannas, per Weakley's Flora
Native to the Carolinas & Georgia
Common (rare in NC)
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
DOES THE PLANT HAVE "MILKY SAP"?
Has milky sap (latex)
LEAVES:
Simple
Opposite or subopposite
FLOWER:
Spring/Summer
Greenish-white w rose tips
Radially symmetrical
5-merous
5-lobed corolla
Superior ovary
Bisexual
Flowers in 3-4 umbels from upper leaf axils
FRUIT:
Summer
Follicle
TO LEARN MORE about this plant, look it up in a good book!
- Guide to the Wildflowers of SC, 2nd ed. (McMillan, Porcher, Rayner, & White; 2022) p374
- Wildflowers of the Atlantic Southeast (Cotterman, Waitt, & Weakley, 2019) p362
- Wildflowers of the Carolina Lowcountry (Porcher, 1995) p179
- Field Guide to the Wildflowers of Georgia (Chafin, 2016) p049
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