Murdannia keisak
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
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.
Selected References
Lower Taxa
None.
... more about "Murdannia keisak"
3-lobed +
sessile +
glabrous +
linear-oblong;linear-lanceolate +
succulent +
spathaceous +
absent +
3-valved +
loculicidal +
1-flowered +
fascicled +
1;several +
lidlike +
bearded +
symmetric +
bisexual +
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 +
Present +
axillary +
umbel-like +
reduced +
true +
alternate +
parallel +
superior +
1[-2]-seriate +
1;many +
developed +
petaloid +
deliquescent +
distinct +
not clawed +
subequal +
equal +
Symb. Sin. +
1936 +
thin +
1[-2]-seriate +
ribbed +
2;6 +
sepaloid +
distinct +
subequal +
closed +
decumbent +
long-trailing +
absent +
fertile +
simple +
simple +
slender +
Murdannia keisak +
Murdannia +
species +
fascicles +
annual +