OF THE CAROLINAS & GEORGIA

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


SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Croton michauxii var. ellipticus   FAMILY Euphorbiaceae

SYNONYMOUS WITH Flora of North America

Croton michauxii var. elliptica

SYNONYMOUS WITH The Biota of North America Program. BONAP (Kartesz, 2015)

Croton michauxii var. elliptica

SYNONYMOUS WITH Circumscription of Croton section Crotonopsis (van Ee & Berry, 2009)

Croton michauxii var. elliptica

SYNONYMOUS WITH Synthesis of the North American Flora (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.

image of Croton willdenowii, Outcrop Rushfoil, Willdenow's Croton, Glade Rushfoil, Broadleaf Rushfoil

JK Marlow    jkm060730_011

July    Pickens County    SC

image of Croton willdenowii, Outcrop Rushfoil, Willdenow's Croton, Glade Rushfoil, Broadleaf Rushfoil

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.

image of Croton willdenowii, Outcrop Rushfoil, Willdenow's Croton, Glade Rushfoil, Broadleaf Rushfoil

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).

image of Croton willdenowii, Outcrop Rushfoil, Willdenow's Croton, Glade Rushfoil, Broadleaf Rushfoil

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).

image of Croton willdenowii, Outcrop Rushfoil, Willdenow's Croton, Glade Rushfoil, Broadleaf Rushfoil

JK Marlow    jkm220722_9217

July    Greenville County    SC

Bald Rock Heritage Preserve

image of Croton willdenowii, Outcrop Rushfoil, Willdenow's Croton, Glade Rushfoil, Broadleaf Rushfoil

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).

image of Croton willdenowii, Outcrop Rushfoil, Willdenow's Croton, Glade Rushfoil, Broadleaf Rushfoil

JK Marlow    jkm220906_9724

September    Greenville County    SC

Bald Rock Heritage Preserve

image of Croton willdenowii, Outcrop Rushfoil, Willdenow's Croton, Glade Rushfoil, Broadleaf Rushfoil

JK Marlow    jkm221010_0326

October    Pickens County    SC

image of Croton willdenowii, Outcrop Rushfoil, Willdenow's Croton, Glade Rushfoil, Broadleaf Rushfoil

JK Marlow    jkm221010_0327

October    Pickens County    SC

image of Croton willdenowii, Outcrop Rushfoil, Willdenow's Croton, Glade Rushfoil, Broadleaf Rushfoil

JK Marlow    jkm221010_0328

October    Pickens County    SC

 

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
Croton michauxii var. elliptica

SYNONYMOUS WITH The Biota of North America Program. BONAP (Kartesz, 2015)
Croton michauxii var. elliptica

SYNONYMOUS WITH Circumscription of Croton section Crotonopsis (van Ee & Berry, 2009)
Croton michauxii var. elliptica

SYNONYMOUS WITH Synthesis of the North American Flora (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

 

Find by SCIENTIFIC NAME:

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)

map
Click here to see a map, notes, and images from Weakley's Flora of the Southeastern US.

Click here to see a map showing all occurrences known to SERNEC, a consortium of southeastern herbaria. (Zoom in to see more detail.)

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
Unisexual
5-lobed calyx
Petals absent in pistillate flowers
5 stamens

Inflorescence a terminal spike

FRUIT:
Summer/Fall
Utricle

 

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



 


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