Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Rosids: Fabids: Malpighiales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Croton willdenowii
FAMILY
Euphorbiaceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Outcrop Rushfoil at Vascular Plants of North Carolina.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Croton michauxii var. ellipticus
FAMILY
Euphorbiaceae
SYNONYMOUS WITH Flora of North America north of Mexico, vol. 12 (2016)
Croton michauxii var. elliptica
SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2015)
Croton michauxii var. elliptica
SYNONYMOUS WITH Circumscription of Croton section Crotonopsis (van Ee & Berry, 2009)
Croton michauxii var. elliptica
SYNONYMOUS WITH Floristic Synthesis of North America (Kartesz, 1999)
Croton willdenowii
SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 107-03-002:
Crotonopsis elliptica FAMILY Euphorbiaceae
SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Crotonopsis elliptica
COMMON NAME:
Outcrop Rushfoil, Willdenow's Croton, Glade Rushfoil, Broadleaf Rushfoil
To see larger pictures, click or hover over the thumbnails.
)
JK Marlow jkm230606_3792
June Pickens County SC
Glassy Mountain Heritage Preserve
)
Alan S. Weakley asw_10231869842425032
July Hoke County NC
)
JK Marlow jkm060730_011
July Pickens County SC
)
JK Marlow jkm220722_9208
July Greenville County SC
Bald Rock Heritage Preserve
Stem lvs scattered, alternate; most lvs on the wide-spreading branches opposite or oft whorled, per Vascular Plants of North Carolina.
)
JK Marlow jkm220722_9210
July Greenville County SC
Bald Rock Heritage Preserve
Stems branched, densely covered by silvery scales w reddish-brown centers. Leaves to 1.5" long, per Wildflowers of the Atlantic Southeast (Cotterman, Waitt, & Weakley, 2019).
)
JK Marlow jkm220722_9212
July Greenville County SC
Bald Rock Heritage Preserve
Leaves green above, but underneath silvery-hoary w stellate hairs and scurfy w brownish scales, per Gray's Manual of Botany (Fernald, 1950).
)
JK Marlow jkm220722_9217
July Greenville County SC
Bald Rock Heritage Preserve
)
JK Marlow s060730_b
July Pickens County SC
Silvery hairs and scattered brown to red spots on leaf undersides, per Guide to the Plants of Granite Outcrops (Murdy & Carter, 2000).
)
JK Marlow jkm220906_9724
September Greenville County SC
Bald Rock Heritage Preserve
)
JK Marlow jkm221010_0326
October Pickens County SC
)
JK Marlow jkm221010_0327
October Pickens County SC
)
JK Marlow jkm221010_0328
October Pickens County SC
)
JK Marlow jkm231001_5738
October Transylvania County NC
DuPont State Forest
)
JK Marlow jkm231001_5738b
October Transylvania County NC
DuPont State Forest
)
JK Marlow jkm231010_5933
October Pickens County SC
Glassy Mountain Heritage Preserve
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Croton willdenowii
FAMILY
Euphorbiaceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Croton michauxii var. ellipticus
FAMILY
Euphorbiaceae
SYNONYMOUS WITH
Flora of North America north of Mexico, vol. 12
Croton michauxii var. elliptica
SYNONYMOUS WITH
Floristic Synthesis of North America. BONAP (Kartesz, 2015)
Croton michauxii var. elliptica
SYNONYMOUS WITH
Circumscription of Croton section Crotonopsis (van Ee & Berry, 2009)
Croton michauxii var. elliptica
SYNONYMOUS WITH
Floristic Synthesis of North America (Kartesz, 1999)
Croton willdenowii
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 107-03-002:
Crotonopsis elliptica
FAMILY
Euphorbiaceae
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933, 1938)
Crotonopsis elliptica
411
Forb
Annual
Monoecious
Habitat: Granitic flatrocks, diabase barrens, calcareous barrens, thin soils around other rock outcrops, open woodlands, disturbed sandy soil, per Weakley's Flora
Native to the Carolinas & Georgia
Common (rare in Carolina Coastal Plain)
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
DOES THE PLANT HAVE "MILKY SAP"?
Does not have milky sap
LEAVES:
Simple
Alternate on stem (but most leaves on the branches are opposite or whorled)
Leaves sessile or short-petiolate
Margins entiire
FLOWER:
Summer/Fall
Whitish
5-lobed calyx
Petals absent in pistillate flowers
5 stamens
Unisexual
Inflorescence a terminal spike
FRUIT:
Summer/Fall
Utricle
TO LEARN MORE about this plant, look it up in a good book!
- Guide to the Wildflowers of SC, 1st ed. (Porcher & Rayner, 2001) p172
- Guide to the Wildflowers of SC, 2nd ed. (McMillan, Porcher, Rayner, & White; 2022) p203
- Guide to the Plants of Granite Outcrops (Murdy & Carter, 2000) p59
- Wildflowers of the Atlantic Southeast (Cotterman, Waitt, & Weakley, 2019) p204
- Field Guide to the Wildflowers of Georgia (Chafin, 2016) p179
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