Chorispora tenella

(Pallas) de Candolle

Syst. Nat. 2: 435. 1821.

WeedyIntroducedIllustrated
Basionym: Raphanus tenellus Pallas Reise Russ. Reich. 3: 741. 1776
Synonyms: Chorispermum tenellum (Pallas) R. Brown
Treatment appears in FNA Volume 7. Treatment on page 511.

Plants papillose, sometimes pubescent, papillae sometimes mixed with simple trichomes. Stems (0.5–) 1–4 (–5.6) dm. Basal leaves (often withered by flowering); petiole (0.5–) 1–2 (–4) cm; blade oblanceolate or oblong, (1.5–) 2.5–8 (–13) cm × (4–) 8–20 (–30) mm, base cuneate or attenuate, apex acute, surfaces glandular. Cauline leaves similar to basal, distalmost subsessile, blades smaller distally. Fruiting pedicels (2–) 3–5 mm, glandular. Flowers: sepals purplish, (3–) 4–5 (–6) × 0.5–0.7 mm; petals 8–10 (–12) × 1–2 mm, claw 6–7 mm; filaments 4–6 (–7) mm; anthers ca. 1.5 mm. Fruits slightly curved-ascending, (1.4–) 1.8–2.5 (–3) cm × 1.5–2 mm, with 8–12 constrictions on each side; style (6–) 10–18 (–22) mm. Seeds brown, 1–1.4 × 0.8–1 mm. 2n = 14.


Phenology: Flowering Apr–Jul.
Habitat: Waste places, pastures, fields, roadsides, railroad embankments, grassy slopes
Elevation: 0-2300 m

Distribution

V7 802-distribution-map.gif

Introduced; Alta., B.C., Sask., Ariz., Calif., Colo., Idaho, Ill., Ind., Iowa, Kans., La., Mass., Mich., Mo., Mont., Nebr., Nev., N.Mex., N.Y., N.Dak., Ohio, Okla., Oreg., S.Dak., Tenn., Tex., Utah, Wash., Wyo., Europe, Asia, n Africa, also in South America

Discussion

Chorispora tenella appears to be most widely distributed in Colorado, Nevada, and Wyoming, of all the provinces and states listed above.

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 "Chorispora tenella"
1.5 cm15 mm <br />0.015 m <br /> (?) +
Ihsan A. Al-Shehbaz +
(Pallas) de Candolle +
attenuate +  and cuneate +
Raphanus tenellus +
appendaged +  and unappendaged +
8 cm80 mm <br />0.08 m <br /> (13 cm130 mm <br />0.13 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
not auriculate +
2.5 cm25 mm <br />0.025 m <br /> (8 cm80 mm <br />0.08 m <br />) +
entire +  and sinuate-dentate +
dissected +, repand +, sinuate +, crenate +  and dentate +
oblong;oblanceolate +
smaller +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (2 cm20 mm <br />0.02 m <br />) +
urceolate +, campanulate +  and tubular +
branched +  and simple +
well-developed +
distinct +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
differentiated +
emarginate +  and entire +
Alta. +, B.C. +, Sask. +, Ariz. +, Calif. +, Colo. +, Idaho +, Ill. +, Ind. +, Iowa +, Kans. +, La. +, Mass. +, Mich. +, Mo. +, Mont. +, Nebr. +, Nev. +, N.Mex. +, N.Y. +, N.Dak. +, Ohio +, Okla. +, Oreg. +, S.Dak. +, Tenn. +, Tex. +, Utah +, Wash. +, Wyo. +, Europe +, Asia +, n Africa +  and also in South America +
0-2300 m +
straight +  and curved +
not winged +  and unappendaged +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
connate +  and distinct +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
actinomorphic +
each +, intrastaminal +  and lateral +
2.5 cm25 mm <br />0.025 m <br /> (3 cm30 mm <br />0.03 m <br />) +
indehiscent +  and dehiscent +
1.8 cm18 mm <br />0.018 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
curved-ascending +
terete +, not +  and segmented +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Waste places, pastures, fields, roadsides, railroad embankments, grassy slopes +
alternate +, not +  and rosulate +
cauline +  and basal +
connate +  and distinct +
decurrent +
dentate to pinnately lobed +  and entire +
pinnatifid +
tenuinucellate +, crassinucellate +  and bitegmic +
campylotropous +  and anatropous +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
white +, lavender +  and purple +
8mm;10mm +
rudimentary +
oblanceolate +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Flowering Apr–Jul. +
trinucleate +  and 3(-11)-colpate +
flattened +
mucilaginous +
aseriate +, biseriate +  and uniseriate +
not +  and mucilaginous +
0.1 cm1 mm <br />0.001 m <br /> (0.14 cm1.4 mm <br />0.0014 m <br />) +
oblong +  and flattened +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
terete +, submoniliform +, torulose +  and linear +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
persistent +  and caducous +
distinct +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
perforated +  and complete +
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 +
decumbent +  and erect +
2-lobed +  and conical +
subsessile +, sessile +  and petiolate +
1.8 cm18 mm <br />0.018 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
persistent +
distinct +
1 cm10 mm <br />0.01 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
Chorispermum tenellum +
Chorispora tenella +
Chorispora +
species +
scale-like +  and forked +
pubescent +  and glabrous +
anastomosing +
eglandular +  and not scapose +
pubescent +  and glabrous +
rhizomatous +, taprooted +, scapose +  and not +
perennial +, biennial +  and annual +
aquatics +  and terrestrial +