EASTERN TOOTHED SPURGE
File Size: 73 KB
 
Euphorbia dentata  Michx.
Konza Prairie, Riley County, Kansas
Annual
Height: 6-24 inches
Family: Euphorbiaceae - Spurge Family
Flowering Period:   July, August, September,October
Stems: Erect or ascending, branched, principally pilose, longer hairs proximal to inflorescence fragile and spreading; sap milky.
Leaves: Mostly opposite, upper sometimes alternate; stipules absent or minute and gland-like; petiole .2 to .8 inch, pilose; blade narrowly lanceolate to rhombic or suborbiculate, 1.2 to 2.8 inches long, .16 to 1.4 inch wide, base symmetric, acute to obtuse or truncate, margins usually coarsely crenate-dentate, rarely crenate, tip acute to acuminate, lower surfaces pilose, upper surfaces sparsely pilose to glabrate.
Inflorescences: Cup-shaped receptacles, terminal, subtended by pale green- or white-based bracts, or bracts entirely green; peduncle less than 1/25 inch; involucres bell-shaped, .15 inch long, .07 inch wide, glabrous; glands (1-)2, green, obconic; appendage absent.
Flowers: Staminate flowers 8-10; sepals 0; petals 0; stamen 1; pistillate flower: sepals 0; petals 0; ovary glabrous, style 2-cleft for 3/4-1/2 length.
Fruits: Capsules depressed-globose, 3-lobed, 1/10 to 1/8 inch, glabrous; seeds gray to black, usually not strongly mottled, ovoid, uniformly finely-pitted; caruncle present.
Habitat: Oak-hickory woodlands, flood plains, thickets, rocky tallgrass prairies, roadsides, gardens, disturbed sites.
Distribution: East 1/3 of Kansas
Origin: Native
Toxicity: Poisonous to livestock, but the flowers, fruits, and leaves are eaten by the wild turkey.
Comments: Named for Euphorbus, 1st century Greek physcian, and dentata, toothed, alluding to the leaf margins.

Eastern toothed spurge inflorescence
76 KB
Konza Prairie, Riley County, Kansas
Eastern toothed spurge leaves
78 KB
Konza Prairie, Riley County, Kansas
Eastern toothed spurge leaves
74 KB
Konza Prairie, Riley County, Kansas
Eastern toothed spurge stem
73 KB
Konza Prairie, Riley County, Kansas