Dig deeper at SERNEC, a consortium of southeastern herbaria.
Learn more about Dioscorea from the Vascular Plants of North Carolina.
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
INCLUDED WITHIN
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 043-01-002a?:
Dioscorea villosa var. villosa
FAMILY
Dioscoreaceae
INCLUDING
Manual of the Southeastern Flora (Small, 1933)
Dioscorea quaternata
COMMON NAME:
Whorled Wild Yam, Fourleaf Yam
Click or hover over the thumbnails to see larger pictures.
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USDA-NRCS PLANTS Database / USDA Wetland flora: Field office illustrated guide pnd_diqu_002_lvd
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JK Marlow jkm120421_226
April Hendersonvlle County NC
Holmes Educational Forest
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JK Marlow jkm130422_662
April Pickens County SC
Glassy Mountain Heritage Preserve
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JK Marlow jkm150424_667
April Blount County TN
Great Smoky Mountains National Park
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JK Marlow jkm170429_407
April Greenville County SC
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JK Marlow jkm0405b_11
May Rutherford County NC
Chimney Rock Park
Stem terete [round] in cross-section, per Weakley's Flora.
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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.
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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.
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JK Marlow jkm070526_041
May Polk County NC
Plant often contorted and much-branched, per Weakley's Flora.
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JK Marlow jkm080507_033
May Greenville County SC
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JK Marlow jkm080507_042
May Greenville County SC
Male inflorescence widely branched with 1-4 tiny white flowers per node, per Wildflowers of Tennessee.
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Patrick D. McMillan pdmdquaternata_tc2
May
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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.
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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 (2012).