Corchorus aestuans

Linnaeus

Syst. Nat. ed. 10, 2: 1079. 1759.

Common names: East Indian or West African mallow
IntroducedWeedy
Synonyms: Corchorus acutangulus Lamarck
Treatment appears in FNA Volume 6. Treatment on page 199. Mentioned on page 198.

Plants herbs, annual or short-lived perennial. Stems erect to decumbent or ascending, 2–13 (–20) dm, puberulent in lines, hairs simple, arched, downturned to irregularly oriented. Leaves: petiole 5–30 (–36) mm; blade ovate or broadly ovate to ovate-elliptic, 2–8 cm, base rounded-truncate, margins serrate, one or both of basal pair of teeth sometimes prolonged into caudate-setaceous point 3–5 mm, apex short-acuminate or acute, surfaces sparsely pilose to strigose on veins and lamina. Inflorescences usually solitary flowers, sometimes fasciculate or cymose, 2–3-flowered. Pedicels 2–3 mm. Flowers: sepals narrowly oblong, 3–5 mm, awned, glabrous; petals 4–6 mm; stamens 10–20. Capsules cylindric, wing-angled, wings to 2 mm wide, 3 (–4) [–5] -valved, each valve terminated by bifurcate awn 1.5–3 mm, 15–25 (–40) × 4–5 mm, glabrous. 2n = 14.


Phenology: Flowering Jul–Sep(–Oct).
Habitat: Roadsides, fallow fields, vacant lots, abandoned road beds, concrete cracks, edges of scrub oak thickets and pine-oak woodlands, lake edges, shady woodlands
Elevation: 0–50 m

Distribution

V6 353-distribution-map.jpg

Introduced; Ala., Fla., Ga., La., Asia (India), Africa, also in West Indies, Central America, South America, elsewhere in Asia (Japan), elsewhere in Asia (Pakistan), elsewhere in Asia (Singapore), Pacific Islands (Papua New Guinea), Australia

Discussion

Apparently the first and perhaps only record of Corchorus aestuans for Alabama is an 1891 collection from ballast ground in Mobile County.

Selected References

None.

Lower Taxa

None.

"prolonged" 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 "Corchorus aestuans"
acute;short-acuminate +
Guy L. Nesom +
Linnaeus +
bifurcate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
rounded-truncate +
hairy +  and glabrous +
broadly ovate +  and ovate-elliptic +
2 cm20 mm <br />0.02 m <br /> (8 cm80 mm <br />0.08 m <br />) +
2-4[-10]-valved +
hairy +  and glabrous +
wing-angled;cylindric +
East Indian or West African mallow +
Ala. +, Fla. +, Ga. +, La. +, Asia (India) +, Africa +, also in West Indies +, Central America +, South America +, elsewhere in Asia (Japan) +, elsewhere in Asia (Pakistan) +, elsewhere in Asia (Singapore) +, Pacific Islands (Papua New Guinea) +  and Australia +
0–50 m +
sparse;copious +
actinomorphic +
Roadsides, fallow fields, vacant lots, abandoned road beds, concrete cracks, edges of scrub oak thickets and pine-oak woodlands, lake edges, shady woodlands +
2-3-flowered +, cymose +  and fasciculate +
leaf-opposed +, terminal +  and axillary +
connate +  and distinct +
distichous +  and alternate +
crenate;dentate +
2 +  and 50 +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
distinct +
obovate;oblanceolate +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
3 cm30 mm <br />0.03 m <br /> (3.6 cm36 mm <br />0.036 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Flowering Jul–Sep(–Oct). +
perennial +, short-lived +  and annual +
caudate-setaceous +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Syst. Nat. ed. +
pitted +  and smooth +
appendaged +  and not petaloid +
persistent +
distinct +
5 +  and 4 +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Introduced +  and Weedy +
few-branched +  and unbranched +
erect;decumbent or ascending +
puberulent +
lobulate +, crenulate +  and discoid +
caducous +  and subpersistent +
short-cylindric +
sparsely pilose +  and strigose +
Corchorus acutangulus +
Corchorus aestuans +
Corchorus +
species +
2.5 cm25 mm <br />0.025 m <br /> (4 cm40 mm <br />0.04 m <br />) +
15mm;25mm +
4mm;5mm +
perennial +  and annual +
shrub +  and herb +
3(-4)[-5]-valved +
0mm;2mm +