Native & Naturalized Plants of the Carolinas & Georgia


2077

Herbaceous vine
Perennial
Dioecious

Native to the Carolinas & Georgia
Documented growing wild in GA NC SC

Common

Look for it in moist forests, per Weakley's Flora

map
To see a detailed map, click here

 

...Moist

LEAVES:
Simple
Lower leaves in whorls of 4-7, upper leaves alternate

FLOWER:
Spring/Summer
Greenish-yellow
Unisexual
6 tepals
6 stamens
Inferior ovary

FRUIT:
Summer/Fall
Capsule

 

TO LEARN MORE about this plant, look it up in a good book!



Spermatophytes (seed plants): Angiosperms (flowering plants): Monocots: Dioscoreales

WEAKLEY'S FLORA (3/8/10):
Dioscorea quaternata   FAMILY Dioscoreaceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Dioscorea quaternata   FAMILY Dioscoreaceae

LESS THAN VASCULAR FLORA OF THE CAROLINAS (1968) 043-01-002a?:
Dioscorea villosa var. villosa   FAMILY Dioscoreaceae

GREATER THAN Manual of the Southeastern Flora (Small, 1933)
Dioscorea quaternata

 

COMMON NAME:
Whorled Wild Yam


Click or hover over the thumbnails to see larger pictures.

image of Dioscorea quaternata

USDA-NRCS PLANTS Database / USDA Wetland flora: Field office illustrated guide    pnd_diqu_002_lvd

        

image of Dioscorea quaternata

JK Marlow    jkm120421_226

April    Hendersonvlle County    NC

Holmes Educational Forest

image of Dioscorea quaternata

JK Marlow    jkm130422_662

April    Pickens County    SC

Glassy Mountain Heritage Preserve

image of Dioscorea quaternata

JK Marlow    jkm150424_667

April    Blount County    TN

Great Smoky Mountains National Park

image of Dioscorea quaternata

JK Marlow    jkm170429_407

April    Greenville County    SC

image of Dioscorea quaternata

JK Marlow    jkm0405b_11

May    Rutherford County    NC

Chimney Rock Park

Stem terete [round] in cross-section, per Weakley's Flora.

image of Dioscorea quaternata

JK Marlow    jkm0505e_23

May    Oconee County    SC

Clusters of dried, papery 3-winged capsules are conspicuous in autumn, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.

image of Dioscorea quaternata

JK Marlow    jkm070526_038

May    Polk County    NC

Leaf base cordate with wide sinuses; 7-11 parallel veins and many cross veins, per Vascular Flora of the Carolinas.

image of Dioscorea quaternata

JK Marlow    jkm070526_041

May    Polk County    NC

Plant often contorted and much-branched, per Weakley's Flora.

image of Dioscorea quaternata

JK Marlow    jkm080507_033

May    Greenville County    SC

image of Dioscorea quaternata

JK Marlow    jkm080507_042

May    Greenville County    SC

Male inflorescence widely branched with 1-4 tiny white flowers per node, per Wildflowers of Tennessee.

image of Dioscorea quaternata

Patrick D. McMillan    pdmdquaternata_tc2

May        

image of Dioscorea quaternata

JK Marlow    jkm140614_861

June    Rabun County    GA

Chattahoochee National Forest

Lower leaves in whorls of 4-7, upper leaves alternate, per Weakley's Flora.

image of Dioscorea quaternata

JK Marlow    jkm0410h_20

October    Rutherford County    NC

Chimney Rock Park

Our native Dioscorea have 7-13 main veins, vs. Smilax section Nemexia w 3(5), per Weakley's Flora.