Murdannia keisak

(Hasskarl) Handel-Mazzetti

Symb. Sin. 7: 1243. 1936.

WeedyIntroducedIllustrated
Basionym: Aneilema keisak Hasskarl Commelin. Ind., 32. 1870
Treatment appears in FNA Volume 22.

Herbs, annual, with long-trailing, decumbent shoots. Leaves: blade linear-oblong to linear-lanceolate, 1.5–7 × 0.2–1 cm, glabrous. Inflorescences terminal and in distal leaf-axils; cymes 1-several, 1-flowered, solitary or fascicled. Flowers bisexual, radially symmetric, 1 cm wide; sepals 5–6 mm; petals purplish lilac or purple to pink or white, 5–8 mm; stamens 3; filaments bearded; staminodes 3. Capsules (4–) 5–9 mm. Seeds 2–6 per locule, 1.6–3 mm, faintly ribbed.


Phenology: Flowering fall.
Habitat: Roadside ditches and swales, margins of lakes, creeks, rivers, swamps, bogs, swamp forest, and other aquatic habitats, often growing in water

Distribution

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Introduced; Ark., Fla., Ga., Ky., La., Md., Miss., N.C., Oreg., S.C., Tenn., Va., Wash., Europe, native, Asia

Discussion

I agree with C. P. Dunn and R. R. Sharitz (1990) that this species is still expanding its range since its introduction early this century.

Lower Taxa

None.
... more about "Murdannia keisak"
Robert B. Faden +
(Hasskarl) Handel-Mazzetti +
Aneilema keisak +
1.5 cm15 mm <br />0.015 m <br /> (7 cm70 mm <br />0.07 m <br />) +
linear-oblong;linear-lanceolate +
succulent +
0.2 cm2 mm <br />0.002 m <br /> (1 cm10 mm <br />0.01 m <br />) +
caducous +  and persistent +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
1;several +
Ark. +, Fla. +, Ga. +, Ky. +, La. +, Md. +, Miss. +, N.C. +, Oreg. +, S.C. +, Tenn. +, Va. +, Wash. +, Europe +, native +  and Asia +
symmetric +, or +  and staminate +
1 cm10 mm <br />0.01 m <br /> (?) +
Roadside ditches and swales, margins of lakes, creeks, rivers, swamps, bogs, swamp forest, and other aquatic habitats, often growing in water +
thyrsiform +  and cymose +
cauline +  and basal +
purple +  and pink or white +
distinct +
not clawed +
subequal +
0.5 cm5 mm <br />0.005 m <br /> (?) +  and 0.8 cm8 mm <br />0.008 m <br /> (?) +
Flowering fall. +
dunn1990a +
0.16 cm1.6 mm <br />0.0016 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
distinct +
subequal +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
long-trailing +
Weedy +, Introduced +  and Illustrated +
antipetalous +, staminodial +  and antisepalous +
not +  and enlarged +
slender +
Murdannia keisak +
Murdannia +
species +
11 +, 10 +, 9 +, 7 +  and 6 +