Sagina japonica

(Swartz) Ohwi

J. Jap. Bot. 13: 438. 1937.

Common names: Sagine du Japon
Introduced
Basionyms: Spergula japonica Swartz Ges. Naturf. Freude Berlin Neue Schriften 3: 164, plate 1, fig. 2. 1801
Treatment appears in FNA Volume 5. Treatment on page 147. Mentioned on page 141.

Plants annual, glandular-pubescent. Stems ascending to spreading, much-branched, usually filiform, frequently glandular-pubescent distally. Leaves: axillary fascicles rarely present; basal frequently in tuft of ascending leaves, rosette rarely present, blade linear, 4–10 mm, succulent, apex apiculate, glabrous; cauline leaves conspicuously connate basally, forming shallow, scarious cup, blade linear, fleshy, apex apiculate, glabrous or rarely pubescent; proximal leaf-blades 9–20 mm, becoming shorter distally, 4–7 mm. Pedicels slender, distal portion densely glandular-pubescent, becoming less densely glandular-pubescent proximally, proximal 1/4 usually glabrous. Flowers axillary, 5-merous; calyx glandular-pubescent basally; sepals elliptic to orbiculate, 2–2.5 mm, hyaline margins whitish, apex obtuse to rounded, glandular-pubescent, remaining appressed following capsule dehiscence; petals ovate to orbiculate, 1–2 mm, shorter than sepals; stamens 5 or 10. Capsules 2.5–3 mm, exceeding sepals, dehiscing ca. 1/4 length. Seeds dark-brown, reniform to nearly globose, plump, abaxial groove absent, 0.4–0.5 mm, densely tuberculate or strongly pebbled (e North America).


Phenology: Flowering early–late summer.
Habitat: Dryish sites, waste places
Elevation: 200 m

Distribution

V5 303-distribution-map.gif

Introduced; B.C., Nfld. and Labr. (Nfld.), Ont., Que., Conn., Ill., Mass., N.H., N.Y., Ohio, Oreg., Pa., R.I., Vt., e Asia, in Mexico (Veracruz)

Discussion

Sagina japonica was recently introduced in widely scattered locations in northeastern North America, and can be found especially in gravelly roadsides, walkways, and driveways. The plants tend to be much less robust and without distinctly succulent leaves.

Lower Taxa

None.

"/4" is not declared as a valid unit of measurement for this property.

... more about "Sagina japonica"
pebbled +  and tuberculate +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
glandular-pubescent +, pubescent +  and glabrous +
Garrett E. Crow +
(Swartz) Ohwi +
Spergula japonica +
Laciniate (?) +, Emarginate (?) +, Jagged (?) +, 2-fid (?) +  and Entire (?) +
linear +  and subulate +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
fleshy +  and succulent +
reduced +
herbaceous +  and scarious +
glandular-pubescent +
1/4 +  and 1/2 +
globose;ovoid +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
minute +
Sagine du Japon +
shallow +
conspicuous +
scarious +
dish--shaped +
expanded +
glabrous +  and glandular-pubescent +
B.C. +, Nfld. and Labr. (Nfld.) +, Ont. +, Que. +, Conn. +, Ill. +, Mass. +, N.H. +, N.Y. +, Ohio +, Oreg. +, Pa. +, R.I. +, Vt. +, e Asia +  and in Mexico (Veracruz) +
straight +  and curved +
central +  and peripheral +
inconspicuous +
unisexual +  and bisexual +
stalked +  and simple +
Dryish sites, waste places +
disc--shaped +  and dish +
not stipulate +  and petiolate +
connate +
whitish +  and hyaline +
swollen +
3 +  and 5 +
crassinucellate +  and bitegmic +
campylotropous +
spreading;erect +
fugacious +
5 +  and 4 +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Flowering early–late summer. +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
J. Jap. Bot. +
mitchell1991a +, rabeler1996a +  and rabeler1997a +
smooth +  and tuberculate +
reniform +  and nearly globose +
persistent +
distinct +
5 +  and 4 +
elliptic;orbiculate +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Introduced +
10 (?) +  and 5 (?) +
much-branched +
procumbent +  and decumbent +
ascending;spreading +
filiform +
subterminal +
[30 +, 5 +  and 4 +
papillate +
distinct +
5 (?) +  and 4 (?) +
list +  and count +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Spergella +
Sagina japonica +
species +
divided +
10 +  and 8 +
rhizomatous +  and taprooted +
glandular-pubescent +
11 +, 7 +  and 6 +