...Variable
...Dry
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Silphium at Vascular Plants of North Carolina.
Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales
WEAKLEY'S FLORA (2/8/20):
Silphium asteriscus var. dentatum
FAMILY
Asteraceae
INCLUDING
PLANTS NATIONAL DATABASE:
Silphium asteriscus +
FAMILY
Asteraceae
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-54-004a:
Silphium dentatum var. dentatum
FAMILY
Asteraceae
COMMON NAME:
Starry Rosinweed
Click or hover over the thumbnails to see larger pictures.
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JK Marlow jkm200525_5287
May Greenville County SC
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JK Marlow jkm200525_5288
May Greenville County SC
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JK Marlow jkm200525_5289
May Greenville County SC
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JK Marlow jkm200525_5289b
May Greenville County SC
Bracts ciliate, per Vascular Flora of the Carolinas.
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JK Marlow jkm200525_5291
May Greenville County SC
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JK Marlow jkm120727_913
July Spartanburg County SC
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JK Marlow jkm120728_987
July Abbeville County SC
Parson's Mountain Recreation Area
Stems glabrous or less often scabrous or spreading pubescent, leafy to summit, per Vascular Flora of the Carolinas.
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JK Marlow jkm140711_837
July Greenville County SC
Swamp Rabbit Trail
Ray florets 8-13 per head, per Flora of North America.
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JK Marlow jkm140711_842
July Greenville County SC
Swamp Rabbit Trail
Involucral bracts of the genus Silphium are wide and usually squarrose, per Vascular Flora of the Carolinas.
COMPARE
involucral bracts of Silphium
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JK Marlow jkm140711_844
July Greenville County SC
Swamp Rabbit Trail
Leaves coarsely serrate to dentate, harshly scabrous, often hirsute, per Vascular Flora of the Carolinas.
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JK Marlow jkm140711_847
July Greenville County SC
Swamp Rabbit Trail
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JK Marlow jkm140718_942
July Spartanburg County SC
Basal leaves caducous; cauline leaves opposite or alternate, per Flora of North America.
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JK Marlow jkm140718_944
July Spartanburg County SC
Lvs petiolate or sessile/lanceolate, falcate or ovate/bases attenuate to round, per Flora of North America.
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JK Marlow jkm140718_964
July Spartanburg County SC
Disk flowers staminate. Style yellow, undivided, well exserted, per www.missouriplants.com.
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JK Marlow jkm140718_971
July Spartanburg County SC
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JK Marlow jkm140718_972
July Spartanburg County SC
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JK Marlow jkm140718_976
July Spartanburg County SC
Basal leaves caducous; cauline leaves opposite or alternate, per Flora of North America.
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JK Marlow jkm140719_998
July Spartanburg County SC
The bracts on the receptacle of the heads of Asteraceae are called chaff.
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JK Marlow jkm140719_998b
July Spartanburg County SC
Chaff apices stipitate-glandular [bearing stalked glands], per Vascular Flora of the Carolinas.
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JK Marlow jkm140720_019b
July Spartanburg County SC
Pales [receptacular bracts in the Asteraceae] stipitate-glandular, per Weakley's Flora.
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JK Marlow jkm140724_058b
July Greenville County SC
Swamp Rabbit Trail
Paleae puberulent and stipitate-glandular, per Flora of North America.
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JK Marlow jkm190704_9806
July Greenville County SC
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JK Marlow jkm190704_9809
July Greenville County SC
)
JK Marlow jkm151006_320321
October Greenville County SC
Swamp Rabbit Trail
Some of these leaves are in whorls of three... (?)