Euphorbia dentata

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Distribution Map: Based on vouchered plant specimens only. View county names by placing the mouse cursor over a particular county.

Species Distribution Map
Family:EUPHORBIACEAE
Species:Euphorbia dentata Michx.
Common Name:Toothed Spurge; Toothleaf Poinsettia
Habitat:**
Associated Ecological Communities:**
Growth Habit:Herb
Duration:Annual
Category:Vascular
USDA Symbol:**
Plant Notes:Toothed Spurge is an introduced annual plant in the Spurge family (Euphorbiaceae). It is native from northern Mexico north through the south-central United States and east to the Ohio River Valley. Toothed Spurge can be found throughout Alabama, but is most common in northern Alabama and the Black Belt region of central Alabama. Toothed Spurge grows on roadsides, along railroad tracks, in prairies and cedar glades, in fallow fields, and in other open disturbed sites. It is an annual from a tap root. Stems are erect, branched, green in color, inconspicuously pubescent, and one to three feet in height. The leaves are opposite, petiolate, narrowly lanceolate to suborbiculate in outline, broadest below the middle, pubescent, with coarsely toothed margins. The sap is a milky latex that dries when exposed to the air, sealing wounds. The flowers are extremely reduced, lacking petals and sepals, and are produced in a terminal inflorescence known as a cyathium. This consists of a cup-like receptacle with one female flower, 8-10 male flowers, and two nectar glands. It is surrounded by pale green or whitish (sometimes spotted with purple-red) modified leaves known as bracts. The fruit is a three lobed capsule.—A. Diamond
Taxonomic Notes:**
Status:Not Native, G5 (Global Rank)
References:**
Specimen: View specimen details in the Alabama Herbarium Consortium Specimen Database

** Not applicable or data not available.

Classification

FamilyEUPHORBIACEAE - Spurge family
Genus Euphorbia
Species Euphorbia dentata Michx. - Toothed Spurge; Toothleaf Poinsettia

Citation

Citation Euphorbia dentata Michaux, Fl. Bor.-Amer. 2: 211. 1803.
Basionym: **
Type: USA: TENNESSEE: Davidson Co.: Near Nashville, s.d., Michaux s.n. (holotype: P?).

** Not applicable or data not available.

Synonyms

SynonymFull CitationBasionymType
Poinsettia dentata POINSETTIA DENTATA (Michaux) Klotzsch & Garcke ex Klotzsch, Monatsber. Königl. Preuss. Akad. Wiss. Berlin 1859: 253. 1859.  

Specimens and Distribution

This species has been reported in the following counties by the herbaria listed. An overview of the individual specimens are provided in the table that follows. Click on the accession number to view details; click on column headers to sort; choose a county or herbaria to filter the specimen data.

Counties included on distribution map: Blount, Bullock, Butler, Clay, Colbert, Conecuh, Crenshaw, Cullman, Etowah, Franklin, Hale, Jackson, Jefferson, Lamar, Lauderdale, Lawrence, Lee, Limestone, Lowndes, Madison, Marengo, Marion, Marshall, Mobile, Montgomery, Morgan, Pickens, Shelby, St. Clair, Sumter, Tuscaloosa, Walker, Wilcox, Winston

Counties represented by specimen data listed below:

Herbaria represented by specimen data listed below: ALNHS, AUA, JSU, TROY, UNA, UWAL

Range of years during which specimens were collected: 1939 - 2020

Barcode / Accession No.
County
Coll. Date
Collector &
Collection No.
Herbarium &
Herbarium Name Used
Image
UNA00053822 Blount 26 May 1997 Keener, Brian R.
170		 UNA
Euphorbia dentata Michx.
UNA00054305 Blount 11 Jul 1998 Keener, Brian R.
1190		 UNA
Euphorbia dentata Michx.
UWAL0012636 Bullock 02 Nov 2012 Dykes, Bailee
1425		 UWAL
Euphorbia dentata Michaux
TROY000004704 Butler 29 Jul 2001 Diamond, Alvin R.
12576		 TROY
Euphorbia dentata Michaux
TROY000004703 Butler 19 Aug 2006 Diamond, Alvin R.
16805		 TROY
Euphorbia dentata Michaux
UNA00065739 Butler 19 Aug 2006 Diamond, Alvin R.
16805		 UNA
Euphorbia dentata Michx.
JSU124262 Clay 4 Oct 1994 Ballard, J. Mark
5196		 JSU
Euphorbia dentata Michaux
JSU124261 Clay 19 Oct 1996 Ballard, J. Mark
7014		 JSU
Euphorbia dentata Michaux
UWAL0014395 Colbert 26 Jun 2014 England, J. Kevin
5021		 UWAL
Euphorbia dentata Michaux
TROY000048229 Conecuh 18 May 2019 Diamond, Alvin R.
28932		 TROY
Euphorbia dentata Michaux
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