Conringia orientalis

(Linnaeus) Dumortier

Fl. Belg., 123. 1827.

Common names: Rabbit’s-ear rabbit-ears treacle mustard slinkweed
WeedyIntroducedIllustrated
Basionym: Brassica orientalis Linnaeus Sp. Pl. 2: 666. 1753 Erysimum orientale (Linnaeus) Crantz 1769
Treatment appears in FNA Volume 7. Treatment on page 517.

Plants sometimes winter-annuals. Stems mostly simple, (1–) 3–7 dm. Basal leaves: blade (slightly fleshy), pale green, oblanceolate to obovate, 5–9 cm, margins ± entire. Cauline leaves: blade oblong to elliptic or lanceolate, (1–) 3–10 (–15) cm × (5–) 20–25 (–50) mm, base deeply cordate-amplexicaul, apex rounded. Fruiting pedicels ascending, straight or curved-ascending, (8–) 10–15 (–20) mm. Flowers: sepals 6–8 × 1–1.5 mm, median pair narrower than lateral, apex acute; petals 7–12 × 2–3 mm, base attenuate, claw usually as long as sepal; filaments 5–7 mm; anthers 1.5–2 mm. Fruits ± torulose, strongly 4-angled to ± cylindrical, 1-nerved, keeled, (5–) 8–14 cm × 2–2.5 mm; style cylindrical, 0.5–4 mm. Seeds brown, 2–2.9 × 1.2–1.5 mm. 2n = 14.


Phenology: Flowering (Mar in Texas) May–Aug.
Habitat: Cultivated lands, grain fields, disturbed areas, waste places, roadsides, gardens
Elevation: 0-3500 m

Distribution

V7 815-distribution-map.gif

Introduced; Alta., B.C., Man., N.B., Nfld. and Labr., N.S., Ont., P.E.I., Que., Sask., Ala., Alaska, Ariz., Ark., Calif., Colo., Conn., Del., D.C., Fla., Ga., Idaho, Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Mont., Nebr., Nev., N.H., N.J., N.Mex., N.Y., N.C., N.Dak., Ohio, Okla., Oreg., Pa., R.I., S.C., S.Dak., Tenn., Tex., Utah, Vt., Va., Wash., W.Va., Wis., Wyo., Europe, Asia, also in Mexico, nw Africa, Australia

Discussion

Conringia orientalis was collected on ballast in New York as early as 1879. It is most abundant in the plains and prairies of both the United States and Canada (I. A. Al-Shehbaz 1985; R. C. Rollins and Al-Shehbaz 1986). In disturbed places, it has penetrated into the native vegetation over a wide area.

Selected References

None.

Lower Taxa

None.

"elongated" is not a number."thick" is not a number.No values specified."dm" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property.

... more about "Conringia orientalis"
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
straight +
curved-ascending +  and ascending +
acute +  and rounded +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Suzanne I. Warwick +
(Linnaeus) Dumortier +
oblanceolate +  and obovate +
5 cm50 mm <br />0.05 m <br /> (9 cm90 mm <br />0.09 m <br />) +
cordate-amplexicaul +
attenuate +
Brassica orientalis +  and Erysimum orientale +
appendaged +  and unappendaged +
10 cm100 mm <br />0.1 m <br /> (15 cm150 mm <br />0.15 m <br />) +
2.5 cm25 mm <br />0.025 m <br /> (5 cm50 mm <br />0.05 m <br />) +
auriculate +  and cordate +
3 cm30 mm <br />0.03 m <br /> (10 cm100 mm <br />0.1 m <br />) +
dissected +, repand +, sinuate +, crenate +  and dentate +
oblong;elliptic or lanceolate +
much smaller +  and reduced +
2 cm20 mm <br />0.02 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
urceolate +, campanulate +  and tubular +
branched +  and simple +
well-developed +
not +  and distinct +
differentiated +
Rabbit’s-ear +, rabbit-ears +, treacle mustard +  and slinkweed +
emarginate +  and entire +
subconduplicate +
Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. +, N.S. +, Ont. +, P.E.I. +, Que. +, Sask. +, Ala. +, Alaska +, Ariz. +, Ark. +, Calif. +, Colo. +, Conn. +, Del. +, D.C. +, Fla. +, Ga. +, Idaho +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, La. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Miss. +, Mo. +, Mont. +, Nebr. +, Nev. +, N.H. +, N.J. +, N.Mex. +, N.Y. +, N.C. +, N.Dak. +, Ohio +, Okla. +, Oreg. +, Pa. +, R.I. +, S.C. +, S.Dak. +, Tenn. +, Tex. +, Utah +, Vt. +, Va. +, Wash. +, W.Va. +, Wis. +, Wyo. +, Europe +, Asia +, also in Mexico +, nw Africa +  and Australia +
0-3500 m +
straight +  and curved +
not winged +  and unappendaged +
connate +  and distinct +
not dilated +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
actinomorphic +
5 cm50 mm <br />0.05 m <br /> (8 cm80 mm <br />0.08 m <br />) +
8 cm80 mm <br />0.08 m <br /> (14 cm140 mm <br />0.14 m <br />) +
keeled +, strongly 4-angled +  and more or less cylindrical +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
latiseptate +  and unsegmented +
angled +  and terete +
Cultivated lands, grain fields, disturbed areas, waste places, roadsides, gardens +
sessile +  and subsessile +
alternate +, not +  and rosulate +
cauline +  and basal +
connate +  and distinct +
decurrent +
crenulate +
tenuinucellate +, crassinucellate +  and bitegmic +
campylotropous +  and anatropous +
yellow +  and white +
7mm;12mm +
rudimentary +
oblanceolate +  and obovate +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Flowering (Mar in Texas) May–Aug. +
trinucleate +  and 3(-11)-colpate +
mucilaginous +
aseriate +, biseriate +  and uniseriate +
not +  and mucilaginous +
0.2 cm2 mm <br />0.002 m <br /> (0.29 cm2.9 mm <br />0.0029 m <br />) +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
persistent +  and caducous +
distinct +
reduced +
latiseptate +, schizocarpic +, samaroid +  and lomentaceous +
indehiscent +  and dehiscent +
angustiseptate +, flat +, angled +, terete +, torulose +, not +, segmented +  and nutletlike +
Weedy +, Introduced +  and Illustrated +
tetradynamous +
procumbent +  and decumbent +
capitate-flattened +
subsessile +, sessile +  and petiolate +
persistent +
distinct +
cylindrical +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
Cruciferae +
Conringia orientalis +
Conringia +
species +
eglandular +, peltate +, malpighiaceous +, dendritic +, sessile +, stalked +, simple +  and unicellular +
scale-like +  and forked +
coiled +, 1-7-veined +  and veined +
pubescent +  and glabrous +
anastomosing +
perennial +, biennial +  and annual +
aquatics +  and terrestrial +
glabrous +  and pubescent +