...Variable
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales
WEAKLEY'S FLORA (11/30/12):
Ambrosia artemisiifolia
FAMILY
Asteraceae__
INCLUDING
PLANTS NATIONAL DATABASE:
Ambrosia artemisiifolia +
FAMILY
Asteraceae__
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (1968) 179-02-003:
Ambrosia artemisiifolia
FAMILY
Asteraceae__
COMMON NAME:
Annual Ragweed, Common Ragweed
Click or hover over the thumbnails to see larger pictures.
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JK Marlow jkm0405zb_25
May Greenville County SC
Chandler Heritage Preserve
Leaves deeply bipinnately dissected, per Guide to the Wildflowers of SC.
)
JK Marlow jkm140623_225
June Greenville County SC
Swamp Rabbit Trail
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JK Marlow jkm150724_514
July Pickens County SC
Annual with taproot and freely branched stems, per Vascular Flora of the Carolinas.
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JK Marlow jkm0308i_08
August Alamance County NC
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JK Marlow jkm190831_1080
August Greenville County SC
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Roxanna Martin rlm82810_82
August Spartanburg County SC
Female flowers borne in clusters from the upper leaf axils, per Wildflowers of Tennessee.
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Gill Newberry gn09_a_artemes_leaf
September
The specific epithet "artemisiifolia" means leaves resembling Artemisia.
COMPARE
leaves of Mugwort, Ragweed and Spanish Needles
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Roxanna Martin rlm9110_57
September Spartanburg County SC
Male flowers in spikelike clusters that terminate stem and upper branches, per Wildflowers of Tennessee.
)
Roxanna Martin rlm91811_54
September Spartanburg County SC
Female heads roundish, clustered in upper leaf axils below male spike, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.
)
Roxanna Martin rlm91811_56
September Spartanburg County SC
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Roxanna Martin rlm9310_80
September Spartanburg County SC
Male heads saucer-shaped, about 0.1" wide, disk flowers 5-lobed, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.
)
JK Marlow jkm151006_329
October Greenville County SC
Swamp Rabbit Trail
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JK Marlow jkm151006_329b
October Greenville County SC
Swamp Rabbit Trail
)
JK Marlow jkm151006_331
October Greenville County SC
Swamp Rabbit Trail