Spermatophytes (seed plants): Angiosperms (flowering plants): Magnoliids: Piperales
		
	
	
	
	
						
	
	
	
	
	
	
	
	
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
	
	
		 
		
	
Isotrema macrophyllum 	
	
	
	
	
	 
	 
	FAMILY
	Aristolochiaceae
	
	
	
		 
		 
		
		Go to FSUS key
	
	
Dig deeper at SERNEC, a consortium of southeastern herbaria.
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.
Learn more about Isotrema from the Vascular Plants of North Carolina.
SYNONYMOUS WITH
	
	
	
	
	PLANTS NATIONAL DATABASE:
	
			
	
	
	
    
	
	Aristolochia macrophylla 
	
	
		
		
		
	 
	 
	FAMILY
	Aristolochiaceae
	
SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Isotrema macrophyllum
SYNONYMOUS WITH (ORTHOGRAPHIC VARIANT) Tennessee Flora Committee (2015)
Isotrema macrophylla
SYNONYMOUS WITH Flora of North America north of Mexico, vol. 3 (1997)
Aristolochia macrophylla
SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 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 Manual of the Southeastern Flora (Small, 1933, 1938)
Aristolochia macrophylla
COMMON NAME:
Dutchman's Pipe, Pipevine
To see larger pictures, click or hover over the thumbnails.
JK Marlow jkm230525_3425
May 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 (Horn, Cathcart, Hemmerly, & Duhl, 2005).
JK Marlow jkm230525_3431
May Haywood County NC
Blue Ridge Parkway
Peduncle 2-5cm long with a deciduous, perfoliate bract near the base, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
JK Marlow jkm230525_3435
May Haywood County NC
Blue Ridge Parkway
Caterpillars of the pipevine swallowtail butterfly feed only on this family, per Wildflowers & Plant Communities of the Southern Appalachian Mountains and Piedmont (Spira, 2011).
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 (Horn, Cathcart, Hemmerly, & Duhl, 2005).
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 (Smith, 1998).
JK Marlow jkm190719_0006
July Transylvania County NC
Pisgah National Forest: Pisgah Ranger District
Plant nearly glabrous; leaves abruptly pointed (short acuminate), per Weakley's Flora (2018).
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 (Lance).
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 (Lance).
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 (Horn, Cathcart, Hemmerly, & Duhl, 2005).
	
	
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
	
	
		 
		
	
Isotrema macrophyllum 	
	
	
	
	
	 
	 
	FAMILY
	Aristolochiaceae
	
SYNONYMOUS WITH
	
	
	PLANTS NATIONAL DATABASE:
	
			
	
	
	
    
	
	
	Aristolochia macrophylla 
	
	
	
	
	 
	 
	FAMILY
	Aristolochiaceae
	
	SYNONYMOUS WITH
	
 
	Floristic Synthesis of North America. BONAP (Kartesz, 2021)
	
	
	Isotrema macrophyllum
	
	SYNONYMOUS WITH (ORTHOGRAPHIC VARIANT)
	
 
	Tennessee Flora Committee (2015)
	
	
	Isotrema macrophylla
	
	SYNONYMOUS WITH
	
	Flora of North America north of Mexico, vol. 3
	
	Aristolochia macrophylla
	
 
SYNONYMOUS WITH
	
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 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
	
 
Manual of the Southeastern Flora (Small, 1933, 1938)
	
  
	Aristolochia macrophylla
	
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