Euphorbia corollata

Linnaeus

Sp. Pl. 1: 459. 1753.

Common names: Eastern flowering spurge
WeedyIllustratedEndemic
Synonyms: Euphorbia corollata var. molle Millspaugh E. corollata var. viridiflora Farwell E. marilandica Greene E. olivacea Small Tithymalopsis corollata (Linnaeus) Klotzsch & Garcke T. olivacea (Small) Small
Treatment appears in FNA Volume 12. Treatment on page 244. Mentioned on page 238, 240, 242, 245, 250.

Herbs, perennial, with deep, spreading rootstock. Stems erect or ascending, usually unbranched, occasionally few branched, solitary or few, previous years dead stems not persistent, 20–100 cm, glabrous or slightly pilose to villous. Leaves alternate, ascending; stipules 0.1–0.2 mm; petiole minute or absent; blade oblanceolate, obovate, or elliptic, 25–55 × 5–12 mm, base cuneate to rounded, margins entire, occasionally slightly revolute, apex rounded to subacute, abaxial surface glabrous or pilose to villous, adaxial surface usually glabrous, rarely villous; venation occasionally obscure on small leaves, midvein conspicuous. Cyathia in terminal pleiochasia, dichasial bracts occasionally whorled or rarely alternate; peduncle (1.5–) 5–11 (–13) mm (proximal to 70 mm), glabrous. Involucre campanulate, 1.2–1.5 × 1.2–1.5 (–2) mm, glabrous or moderately puberulent (especially near glands); glands 5, green, reniform, 0.5 × 0.8–1 mm; appendages white, flabellate, 2.5–3.5 (–4.5) × 2.5–3.2 mm, entire. Staminate flowers 20–25. Pistillate flowers: ovary glabrous; styles 0.8–1.4 mm, 2-fid at apex to 1/2 length. Capsules globose, 2.3–3 × 3.5–4.2 mm, glabrous; columella 2–2.5 mm. Seeds white or light gray, ovoid, 2.5–2.8 × 2.2 mm, with shallow and coarse depressions; caruncle absent.


Phenology: Flowering and fruiting early summer–fall.
Habitat: Prairies, open fields, upland woods, glades, barrens, borders of swamps, roadsides, disturbed sites.
Elevation: 0–1300 m.

Distribution

V12 1070-distribution-map.jpg

Ont., Ala., Ark., Conn., Del., Ga., Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Nebr., N.H., N.J., N.Y., N.C., Ohio, Okla., Pa., R.I., S.C., S.Dak., Tenn., Tex., Vt., Va., W.Va., Wis.

Discussion

Euphorbia corollata is morphologically variable and widely distributed across a large part of eastern North America. The species appears to be expanding its range, as adventive populations have been reported from disturbed habitats at the northern edge of its range in Maine, Massachusetts, Michigan, Minnesota, New Hampshire, South Dakota, and Vermont.

Selected References

None.

Lower Taxa

None.

"/2" is not declared as a valid unit of measurement for this property.

... more about "Euphorbia corollata"
pilose +  and villous +
villous +  and glabrous +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
flabellate +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.32 cm3.2 mm <br />0.0032 m <br />) +
Jess A. Peirson +, Victor W. Steinmann +  and Jeffery J. Morawetz +
Linnaeus +
cuneate +  and rounded +
Alectoroctonum +
2.5 cm25 mm <br />0.025 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
elliptic;obovate;elliptic;obovate;oblanceolate +
5mm;12mm +
alternate +  and whorled +
cymose +, few-branched +  and unbranched +
additional +
0.23 cm2.3 mm <br />0.0023 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.42 cm4.2 mm <br />0.0042 m <br />) +
exfoliating +
ceraceous +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Eastern flowering spurge +
Ont. +, Ala. +, Ark. +, Conn. +, Del. +, Ga. +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, La. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Miss. +, Mo. +, Nebr. +, N.H. +, N.J. +, N.Y. +, N.C. +, Ohio +, Okla. +, Pa. +, R.I. +, S.C. +, S.Dak. +, Tenn. +, Tex. +, Vt. +, Va. +, W.Va. +  and Wis. +
0–1300 m. +
pistillate +  and staminate +
subtending +
reniform +
0.8mm +  and 1mm +
Prairies, open fields, upland woods, glades, barrens, borders of swamps, roadsides, disturbed sites. +
pleiochasial +  and dichasial +
axillary +  and terminal +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
puberulent +  and glabrous +
campanulate +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
caducous +, deciduous +  and persistent +
bractlike +
palmate +  and pinnate +
crenulate +
1.1 cm11 mm <br />0.011 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
connate;distinct +
hairy +  and glabrous +
Flowering and fruiting early summer–fall. +
opposite +  and whorled +
with white margins +  and green +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.28 cm2.8 mm <br />0.0028 m <br />) +
2.2 cm22 mm <br />0.022 m <br /> (?) +
Weedy +, Illustrated +  and Endemic +
free +, connate +  and distinct +
branched +  and unbranched +
not persistent +
prostrate +  and decumbent +
ascending +  and erect +
20 cm200 mm <br />0.2 m <br /> (100 cm1,000 mm <br />1 m <br />) +
deciduous +  and persistent +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
connate +  and distinct +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (?) +  and 0.14 cm1.4 mm <br />0.0014 m <br /> (?) +
inconspicuous +
hairy +  and glabrous +
Euphorbia corollata var. molle +, E. corollata var. viridiflora +, E. marilandica +, E. olivacea +, Tithymalopsis corollata +  and T. olivacea +
Euphorbia corollata +
Euphorbia sect. Alectoroctonum +
species +
in terminal monochasia +  and solitary +
10 +, 9 +, 8 +, 7 +  and 6 +