Lepidium chalepense

Linnaeus

Cent. Pl. II, 23. 1756.

Synonyms: Cardaria chalepensis (Linnaeus) Handel-Mazzetti Cardaria draba subsp. chalepensis (Linnaeus) O. E. Schulz Cardaria draba var. repens (Schrenk) O. E. Schulz Cardaria repens (Linnaeus) Linnaeus Cochlearia draba Linnaeus Lepidium draba subsp. chalepense (Linnaeus) Thellung Lepidium draba var. repens (Schrenk) Thellung Lepidium repens Physolepidion repens
Treatment appears in FNA Volume 7. Treatment on page 577. Mentioned on page 570, 572, 581.

Perennials; (rhizomatous); densely hirsute to glabrate or glabrous. Stems several from base, erect or decumbent basally, branched (several) distally, (0.8–) 2.1–6.6 (–9.2) dm. Basal leaves (early withered); not rosulate; petiole 0.9–4.4 cm; blade obovate, spatulate, or ovate, (1.8–) 2.5–8.6 (–14) cm × 10–37 mm, margins subentire or dentate. Cauline leaves sessile; blade obovate to oblong or lanceolate to oblanceolate, (1.5–) 2.6–9.3 (–13.2) cm × (7–) 12–31 (–45) mm, base sagittate-amplexicaul or auriculate, margins dentate or entire, (surfaces pubescent or glabrous). Racemes (corymbose panicles), elongated in fruit; rachis glabrous or puberulent, trichomes cylindrical, straight or curved. Fruiting pedicels ascending to horizontal, straight, (terete), 5–16 (–19) × 0.2–0.3 mm, glabrous or sparsely puberulent adaxially. Flowers: sepals oblong to ovate, 1.7–3 × 1–1.6 mm; petals white, obovate, 3–5 × 1.2–2.4 mm, claw 1.2–2 mm; stamens 6; filaments 2–3.3 mm, (glabrous); anthers 0.5–0.6 mm. Fruits (indehiscent), obovoid to subglobose or obcompressed globose, 3.5–5.8 (–7) × (3.5–) 4–6.2 (–7) mm, apically not winged, apical notch absent; valves thin, smooth, often not veined, glabrous; style (0.8–) 1.2–2 (–2.3) mm. Seeds (dark reddish-brown), ovate, 1.5–2.3 × 1–1.3 mm. 2n = 48, 80, 128.


Phenology: Flowering May–Jun.
Habitat: Mountain slopes, roadsides, fields, agricultural lands, stream banks, pastures, waste areas
Elevation: 300-4200 m

Distribution

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Introduced; Alta., B.C., Man., Ont., Sask., Ariz., Calif., Colo., Idaho, Ill., Iowa, Kans., Mont., Nebr., Nev., N.Mex., N.Dak., Oreg., S.Dak., Tex., Utah, Wash., Wyo., Asia, also in South America (Argentina), Europe

Discussion

From the synonymy above, it is evident that the disposition of Lepidium chalepense has varied: more than one species (e.g., R. C. Rollins 1940; G. A. Mulligan and C. Frankton 1962), one species (e.g., Rollins 1993), a variety of Lepidium (Cardaria) draba (N. H. Holmgren 2005b), or a synonym of the latter species (C. L. Hitchcock 1936). In our opinion, the differences in fruit morphology and chromosome number justify its recognition as a distinct species.

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 "Lepidium chalepense"
128 +, 80 +  and 48 +
oblong +  and ovate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> - 0.06 cm0.6 mm <br />6.0e-4 m <br /> +
Ihsan A. Al-Shehbaz +  and John F. Gaskin +
Linnaeus +
auriculate +  and sagittate-amplexicaul +
appendaged +  and unappendaged +
9.3 cm93 mm <br />0.093 m <br /> - 13.2 cm132 mm <br />0.132 m <br /> +
3.1 cm31 mm <br />0.031 m <br /> - 4.5 cm45 mm <br />0.045 m <br /> +
not +  and auriculate +
2.6 cm26 mm <br />0.026 m <br /> - 9.3 cm93 mm <br />0.093 m <br /> +
lobed +, crenate +, serrate +, denticulate +  and dentate +
obovate;oblong or lanceolate +
much smaller +  and reduced +
1.2 cm12 mm <br />0.012 m <br /> - 3.1 cm31 mm <br />0.031 m <br /> +
urceolate +, campanulate +  and tubular +
branched +  and simple +
well-developed +
distinct +
0.12 cm1.2 mm <br />0.0012 m <br /> - 0.2 cm2 mm <br />0.002 m <br /> +
differentiated +
emarginate +  and entire +
incumbent +  and accumbent +
Alta. +, B.C. +, Man. +, Ont. +, Sask. +, Ariz. +, Calif. +, Colo. +, Idaho +, Ill. +, Iowa +, Kans. +, Mont. +, Nebr. +, Nev. +, N.Mex. +, N.Dak. +, Oreg. +, S.Dak. +, Tex. +, Utah +, Wash. +, Wyo. +, Asia +, also in South America - Argentina +  and Europe +
300-4200 m +
straight +  and curved +
not winged +  and unappendaged +
connate +  and distinct +
0.2 cm2 mm <br />0.002 m <br /> - 0.33 cm3.3 mm <br />0.0033 m <br /> +
actinomorphic +
filiform +, linear +, orbicular +, oblanceolate +, oblong +, spatulate +, obovate +, suborbicular +  and ovate +
0.58 cm5.8 mm <br />0.0058 m <br /> - 0.7 cm7 mm <br />0.007 m <br /> +
0.62 cm6.2 mm <br />0.0062 m <br /> - 0.7 cm7 mm <br />0.007 m <br /> +
0.35 cm3.5 mm <br />0.0035 m <br /> - 0.58 cm5.8 mm <br />0.0058 m <br /> +
globose +, obovoid +  and subglobose or obcompressed +
0.4 cm4 mm <br />0.004 m <br /> - 0.62 cm6.2 mm <br />0.0062 m <br /> +
terete +, inflated +, angustiseptate +, globose +, obovoid +, ovoid +, orbicular +, elliptic +, obcordate +, cordate +, obovate +, ovate +  and oblong +
terete +, inflated +, angustiseptate +, globose +, obovoid +, ovoid +, orbicular +, elliptic +, obcordate +, cordate +, obovate +, ovate +  and oblong +
Mountain slopes, roadsides, fields, agricultural lands, stream banks, pastures, waste areas +
sessile +  and petiolate +
alternate +, not +  and rosulate +
cauline +  and basal +
connate +  and distinct +
decurrent +
entire +  and dentate +
dentate;subentire +
tenuinucellate +, crassinucellate +  and bitegmic +
campylotropous +  and anatropous +
rudimentary +
obovate +
0.12 cm1.2 mm <br />0.0012 m <br /> - 0.24 cm2.4 mm <br />0.0024 m <br /> +
0.9 cm9 mm <br />0.009 m <br /> - 4.4 cm44 mm <br />0.044 m <br /> +
Flowering May–Jun. +
trinucleate +  and 3 - -11-colpate +
Cent. Pl. II, +
stout +  and slender +
puberulent +  and glabrous +
mucilaginous +
not winged +, margined +  and winged +
not +  and mucilaginous +
white +, black +, brown +  and yellow +
0.15 cm1.5 mm <br />0.0015 m <br /> - 0.23 cm2.3 mm <br />0.0023 m <br /> +
0.1 cm1 mm <br />0.001 m <br /> - 0.13 cm1.3 mm <br />0.0013 m <br /> +
persistent +  and caducous +
distinct +
ascending +  and spreading +
oblong +  and ovate +
0.1 cm1 mm <br />0.001 m <br /> - 0.16 cm1.6 mm <br />0.0016 m <br /> +
perforated +  and complete +
reduced +
latiseptate +, schizocarpic +, samaroid +  and lomentaceous +
indehiscent +  and dehiscent +
angustiseptate +, flat +, angled +, terete +, torulose +, not +, segmented +  and nutletlike +
tetradynamous +
median +  and lateral +
prostrate +  and decumbent +
decumbent +  and erect +
entire +  and capitate +
subsessile +, sessile +  and petiolate +
0.2 cm2 mm <br />0.002 m <br /> - 0.23 cm2.3 mm <br />0.0023 m <br /> +
persistent +
distinct +
0.12 cm1.2 mm <br />0.0012 m <br /> - 0.2 cm2 mm <br />0.002 m <br /> +
Cardaria chalepensis +, Cardaria draba subsp. chalepensis +, Cardaria draba var. repens +, Cardaria repens +, Cochlearia draba +, Lepidium draba subsp. chalepense +, Lepidium draba var. repens +, Lepidium repens +  and Physolepidion repens +
Lepidium chalepense +
Lepidium +
species +
straight +  and curved +
ascending +  and horizontal +
puberulent +  and glabrous +
cylindrical +
anastomosing +
densely hirsute +  and glabrate or glabrous +
perennial +, biennial +  and annual +
aquatics +  and terrestrial +
pilose +, hirsute +, pubescent +  and glabrous +