You may also want to check Trees, Shrubs, and Woody Vines of North Carolina
Read a taxonomic advisory regarding Isotrema from Alan Weakley and the Southern Appalachian Botanical Society.
Spermatophytes (seed plants): Angiosperms (flowering plants): Magnoliids: Piperales
WEAKLEY'S FLORA (5/21/15):
Isotrema macrophyllum
FAMILY
Aristolochiaceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Aristolochia macrophylla
FAMILY
Aristolochiaceae
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (1968) 062-01-001:
Aristolochia macrophylla
FAMILY
Aristolochiaceae
SYNONYMOUS WITH
Britton & Brown Illus Flora of Northeast US & adjacent Canada (Gleason, 1952)
Aristolochia durior
SYNONYMOUS WITH (ORTHOGRAPHIC VARIANT)
Tennessee Flora Committee (2015)
Isotrema macrophylla
COMMON NAME:
Dutchman's Pipe, Pipevine
Click or hover over the thumbnails to see larger pictures.
JK Marlow jkm170415_664
April Sevier County TN
Great Smoky Mountains National Park
Caterpillars of the pipevine swallowtail butterfly feed only on this family, per Wildflowers & Plant Communities of the Southern Appalachian Mountains and Piedmont.
Will Stuart wil_8771481827_6571c1aeb1
May Madison County NC
Pipe "face" is about 1" wide with 3 equal lobes and a purple-brown mouth, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.
JK Marlow jkm100626_121
June Avery County NC
The Roan Highlands
Flower is a fleshy tubular S-curved calyx terminating in 3 spreading lobes, per Wildflowers of the Southern Mountains.
JK Marlow jkm060805_221
August Haywood County NC
Blue Ridge Parkway
Leaves are heart-shaped, 4-10" wide, smooth to slightly hairy beneath, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.
JK Marlow jkm111008_732
October Jackson County NC
Balsam Mountain Preserve
Fruit a 2-4" ribbed capsule with many flat triangular seeds, per Woody Plants of the Blue Ridge.
JK Marlow jkm0311c_01
November Sevier County TN
Great Smoky Mountains National Park
High-climbing, twining vine most common in rich coves and moist slopes, per Woody Plants of the Blue Ridge.
JK Marlow jkm0311c_03
November Sevier County TN
Great Smoky Mountains National Park
The species name "macrophylla" means "large leaf", per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.