Lapsanastrum apogonoides

(Maximowicz) J. H. Pak & K. Bremer

Taxon 44: 19. 1995.

Common names: Japanese nipplewort
IntroducedIllustrated
Basionym: Lapsana apogonoides Maximowicz Bull. Acad. Imp. Sci. Saint-Pétersbourg 18: 288. 1873
Treatment appears in FNA Volume 19. Treatment on page 255.

Stems slender, weak, flattened. Leaves: basal blades 40–100 × 10–25 mm, dentate, apices obtuse. Phyllaries broadly lanceolate, thin, scarcely keeled, 4–5 mm, stellately spreading in fruit. Corollas 6–10 mm. Cypselae straight, 4–5 mm. 2n = 16.


Phenology: Flowering May–Jun.
Habitat: Cultivated fields, disturbed areas, low boggy areas
Elevation: 10–100 m

Distribution

V19-338-distribution-map.gif

Introduced; Oreg., Asia (China), Asia (Japan), Asia (Korea)

Discussion

Lapsanastrum apogonoides is distinguished by its prostrate habit, weak stems, lyrate leaves, and 5 phyllaries spreading in fruit.

Selected References

None.

Lower Taxa

None.

"fine" is not a number."thin" is not a number.

... more about "Lapsanastrum apogonoides"
scarious +
ovate +  and lanceolate +
paniculiform +  and corymbiform +
indeterminate +  and determinate +
David J. Bogler +
(Maximowicz) J. H. Pak & K. Bremer +
4 cm40 mm <br />0.04 m <br /> (10 cm100 mm <br />0.1 m <br />) +
lobed +  and oblanceolate +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
decurrent +
Lapsana apogonoides +
compound +  and simple +
tuberculate +, rugose +, muricate +  and smooth +
scale-like +
filiform +
Japanese nipplewort +
zygomorphic +, actinomorphic +  and (3-)5-merous +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
golden brown +
flattened +  and oblong +
Oreg. +, Asia (China) +, Asia (Japan) +  and Asia (Korea) +
10–100 m +
winged +  and beaked +
dispersed +
Cultivated fields, disturbed areas, low boggy areas +
indeterminate +
each +  and sessile +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
cylindro-campanulate +
sessile +  and petiolate +
cauline +  and basal +
divided +, lobed +  and dentate +
not scarious +
2-carpellate +
naked +  and bracteate +
not inflated +
Flowering May–Jun. +
connate +  and distinct +
subequal +  and unequal +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
flat;convex +
10 +  and 13 +
exalbuminous +
Introduced +  and Illustrated +
branched +  and simple +
prostrate +  and ascending +
1 +  and 20 +
flattened +
slender +
appendaged +  and truncate +
papillate +
Undefined tribe Lactuceae +
Lapsanastrum apogonoides +
Lapsanastrum +
species +
10 cm100 mm <br />0.1 m <br /> (20 cm200 mm <br />0.2 m <br />) +
shrub +  and subshrub +