Lysimachia japonica

Thunberg in J. A. Murray

in J. A. Murray, Syst. Veg. ed. 14, 196. 1784 ,.

Common names: Japanese loosestrife
Treatment appears in FNA Volume 8. Treatment on page 313. Mentioned on page 310.

Stems prostrate to ascending, simple or branched proximally, 1–3 dm, pubescent; rhizomes very slender; bulblets absent. Leaves opposite or sometimes alternate near apex of stem; petiole 0.5–1.5 cm, pubescent; blade orbiculate to ovate or deltate, 1.5–4 × 0.7–2 cm, base rounded to truncate, slightly decurrent, margins entire, plane, pubescent, apex acute to obtuse, surfaces punctate, sparsely pubescent; venation pinnate-arcuate. Inflorescences axillary in distal leaves, solitary flowers. Pedicels 0.2–0.8 cm, pubescent. Flowers: sepals 5, calyx not streaked, 5–9 mm, pubescent, lobes narrowly lanceolate, margins thin; petals 5, corolla yellow, not streaked, rotate, 5–9 mm, lobes with margins entire, apex acute to rounded, stipitate-glandular; filaments connate, shorter than corolla; staminodes absent. Capsules 2.5–3 mm, not punctate, pubescent distally. 2n = 18, 20, 22 (all Asian).


Phenology: Flowering summer.
Habitat: Deciduous woods above bayous and mesic wooded ravines
Elevation: 0-50 m

Distribution

V8 623-distribution-map.gif

Introduced; La., W.Va., e Asia (China), e Asia (Japan)

Discussion

Selected References

None.

Lower Taxa

None.

"dm" is not declared as a valid unit of measurement for this property.

... more about "Lysimachia japonica"
22 +, 20 +  and 18 +
stipitate-glandular +
acute +  and rounded +
Anita F. Cholewa +
Thunberg in J. A. Murray +
decurrent +, rounded +  and truncate +
1.5 cm15 mm <br />0.015 m <br /> (4 cm40 mm <br />0.04 m <br />) +
sculpted +  and entire +
orbiculate;ovate or deltate +
0.7 cm7 mm <br />0.007 m <br /> (2 cm20 mm <br />0.02 m <br />) +
indistinguishable +
not streaked +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Japanese loosestrife +
not streaked;yellow +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
La. +, W.Va. +, e Asia (China) +  and e Asia (Japan) +
0-50 m +
curved +  and straight +
globose +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Deciduous woods above bayous and mesic wooded ravines +
nectariferous +
monomorphic +
alternate +  and opposite +
lanceolate +
tenuinucellate +  and bitegmic +
anatropous;campylotropous +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
connate;proximally nearly distinct +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
Flowering summer. +
3-5-carpellate +
in J. A. Murray, Syst. Veg. ed. +
winged +  and margined +
reddish-brown +, brown +, black +  and shiny +
smooth;roughened +
ovoid +  and obconic or trigonous or more or less hemispheric +
whitish +  and pinkish +
epipetalous +  and antipetalous +
branched +  and simple +
prostrate +  and ascending +
usually capitate;truncate +
rudimentary +
pinnate-arcuate +
Lysimachia japonica +
Lysimachia +
species +
annual +  and perennial +
stipitate-glandular +  and glabrous +