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.
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_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
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