Microthlaspi perfoliatum

(Linnaeus) F. K. Meyer

Feddes Repert. 84: 453. 1973.

Basionym: Thlaspi perfoliatum Linnaeus Sp. Pl. 2: 646. 1753
Treatment appears in FNA Volume 7. Treatment on page 600.

Stems unbranched or branched basally or distally, (0.3–) 0.5–2.8 (–4) dm. Basal leaves (not rosulate or loosely so); petiole 0.5–1.3 cm; blade ovate or broadly elliptic, 0.3–2 (–2.7) cm × 2–10 mm, base cuneate or attenuate, margins entire or, rarely, obtusely and sparsely dentate, apex rounded. Cauline leaves: blade ovate-cordate or suboblong, (1–) 2–4 (–5.5) cm × (2–) 5–15 (–20) mm, base cordate-amplexicaul, margins entire or repand, apex obtuse. Fruiting pedicels (2.5–) 4–6 (–8) mm. Flowers: sepals (0.8–) 1–1.5 (–2) × 0.5–1 mm, (margins white); petals 1.5–3.5 (–4.7) × 0.5–1.3 mm; filaments 1–1.5 (–2) mm; anthers 0.1–0.2 mm. Fruits 3–6.5 (–8) × (2.5–) 3–6 (–7) mm, base obtuse, apical notch 1–1.5 mm deep; wings 1–2 mm wide apically, much narrower basally; style obsolete or 0.1–0.3 mm. Seeds yellowbrown, 0.9–1.3 (–1.5) × 0.7–1 (–1.2) mm. 2n = 14, 28, 42.


Phenology: Flowering Mar–May.
Habitat: Waste grounds, roadsides, fields, plains, thickets
Elevation: 0-500 m

Distribution

V7 977-distribution-map.gif

Introduced; Ill., Ind., Kans., Ky., Md., Mo., N.J., N.Y., N.C., Ohio, Pa., Tenn., Va., Wash., W.Va., Europe, Asia, n Africa

Discussion

Selected References

None.

Lower Taxa

None.

"elongated" is not a number."thick" is not a number."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 "Microthlaspi perfoliatum"
42 +, 28 +  and 14 +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
obtuse +  and rounded +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Ihsan A. Al-Shehbaz +
(Linnaeus) F. K. Meyer +
not +  and rosulate +
cordate-amplexicaul +
obtuse +, attenuate +  and cuneate +
Thlaspi perfoliatum +
appendaged +  and unappendaged +
4 cm40 mm <br />0.04 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
dissected +, repand +, sinuate +, crenate +  and dentate +
suboblong;ovate-cordate;elliptic;ovate +
much smaller +  and reduced +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
urceolate +, campanulate +  and tubular +
branched +  and simple +
well-developed +
undifferentiated +
not +  and differentiated +
emarginate +  and entire +
Ill. +, Ind. +, Kans. +, Ky. +, Md. +, Mo. +, N.J. +, N.Y. +, N.C. +, Ohio +, Pa. +, Tenn. +, Va. +, Wash. +, W.Va. +, Europe +, Asia +  and n Africa +
0-500 m +
straight +  and curved +
not winged +  and unappendaged +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
connate +  and distinct +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
actinomorphic +
0.65 cm6.5 mm <br />0.0065 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.65 cm6.5 mm <br />0.0065 m <br />) +
angustiseptate +, obovate +  and obcordate +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
angustiseptate +
Waste grounds, roadsides, fields, plains, thickets +
subsessile +, sessile +  and petiolate +
alternate +, not +  and rosulate +
cauline +  and basal +
connate +  and distinct +
decurrent +
dentate +, , +  and entire +
repand;entire +
tenuinucellate +, crassinucellate +  and bitegmic +
campylotropous +  and anatropous +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.47 cm4.7 mm <br />0.0047 m <br />) +
1.5mm;3.5mm +
rudimentary +
spatulate +  and oblong +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
Flowering Mar–May. +
trinucleate +  and 3(-11)-colpate +
Feddes Repert. +
slender +
mucilaginous +
aseriate +, biseriate +  and uniseriate +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
not +  and mucilaginous +
yellowbrown +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
persistent +  and caducous +
distinct +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
ascending +  and erect +
oblong +  and ovate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
reduced +
latiseptate +, schizocarpic +, samaroid +  and lomentaceous +
indehiscent +  and dehiscent +
angustiseptate +, flat +, angled +, terete +, torulose +, not +, segmented +  and nutletlike +
tetradynamous +
branched +  and unbranched +
procumbent +  and decumbent +
semidecumbent +  and erect +
2-lobed +, entire +, conical +  and capitate +
subsessile +, sessile +  and petiolate +
persistent +
distinct +
0.1-0.3 mm +  and obsolete +
Cruciferae +
Microthlaspi perfoliatum +
Microthlaspi +
species +
eglandular +, peltate +, malpighiaceous +, dendritic +, sessile +, stalked +, simple +  and unicellular +
scale-like +  and forked +
coiled +, 1-7-veined +  and veined +
pubescent +  and glabrous +
anastomosing +
rhizomatous +, taprooted +, scapose +  and not +
perennial +, biennial +  and annual +
subshrub +  and herb +
aquatics +  and terrestrial +
glabrous +  and pubescent +
narrower;1mm;2mm +