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 Thyrsanthella difformis from Alan Weakley and the Southern Appalachian Botanical Society.

Read more about Climbing Dogbane at Vascular Plants of North Carolina.

Thyrsanthella difformis is sometimes mistaken at a glance for Gelsemium (both woody vines with opposite lanceolate leaves), but in the field the milky sap of Thyrsanthella provides an immediate identifying characteristic, per Weakley's Flora (2022)

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Trachelospermum difforme   FAMILY Apocynaceae

SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)

Thyrsanthella difformis

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 156-02-001:

Trachelospermum difforme   FAMILY Apocynaceae

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)

Trachelospermum difforme

COMMON NAME:
Climbing Dogbane

         To see larger pictures, click or hover over the thumbnails.

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913    pnd_trdi_001_lvd

        

USDA-NRCS PLANTS Database / USDA Wetland flora: Field office illustrated guide    pnd_trdi_005_lvd

        

Richard and Teresa Ware    rtw_t_difforme

July        

The petals form a tube with spreading lobes, straw-yellow to greenish-yellow, per Wildflowers of the Sandhills Region (Sorrie, 2011).

JK Marlow    jkm181119_5930

November    McCormick County    SC

Parks Mill

Fruit long slender follicles usually borne in pairs [Note paired peduncles], per Woody Plants of the Southeastern US: A Winter Guide (Lance, 2004).

JK Marlow    jkm181119_5933

November    McCormick County    SC

Parks Mill

The fruit is a slender pod 10-20cm long that twists as it dries, per Wildflowers of the Sandhills Region (Sorrie, 2011).

JK Marlow    jkm181119_5936

November    McCormick County    SC

Parks Mill

The seeds have silky hairs like a parachute, per Wildflowers of the Sandhills Region (Sorrie, 2011).

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Thyrsanthella difformis   FAMILY Apocynaceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Trachelospermum difforme   FAMILY Apocynaceae

SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Thyrsanthella difformis

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 156-02-001:
Trachelospermum difforme   FAMILY Apocynaceae

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Trachelospermum difforme