Styrax japonicus

Siebold & Zuccarini

Fl. Jap. 1: 53, plate 23. 1837 ,.

Common names: Japanese snowbell
Synonyms: Styrax bodinieri H. Léveillé Styrax duclouxii Perkins Styrax grandiflorus Griffith Styrax kotoensis Hayata
Treatment appears in FNA Volume 8. Treatment on page 343. Mentioned on page 341.

Shrubs or small trees, to 8 (–10) m, not suckering from roots. Leaves: petiole (2–) 4–7 (–10) mm; blade with 5–8 secondary-veins, oblongelliptic, ovate-elliptic, ovate to ovatelanceolate, or subrhombic, 3–11 × 2–5 (–7) cm, margins of at least some leaves apically remotely serrate, longest arms of abaxial hairs to 0.6 mm. False-terminal inflorescences 2–5-flowered, 1–4 cm; axillary flowers present on at least some shoots (subtending leaves often reduced). Pedicels 15–50 mm, longer than calyx. Flowers: calyx 4–7 × 3–5 mm; corolla (8–) 10–16 (–23) mm, tube 3–5 mm, lobes 5 (–6), imbricate in bud, slightly reflexed, ovate, oblong-ovate, obovate, or ovatelanceolate, 11–20 × (3–) 5–7 (–9) mm; filaments distinct beyond adnation to corolla. Capsules ovoid or ellipsoid, 8–15 × 8–10 mm (broader when 2–3-seeded), gray or grayish yellow stellate-pubescent, dehiscent from distal or proximal end, broadly exposing seed (s); fruit wall 0.4–1 mm thick. 2n = ca. 40.


Phenology: Flowering May–Jun; fruiting Aug–Oct.
Habitat: Woods
Elevation: 0-300 m

Distribution

V8 673-distribution-map.gif

Introduced; Conn., N.Y., Pa., e Asia

Discussion

The ornamental Styrax japonicus has become very locally naturalized in three northeastern states.

Selected References

None.

Lower Taxa

None.

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

... more about "Styrax japonicus"
nearly +  and distinct +
perigynous;epigynous +
Peter W. Fritsch +
Siebold & Zuccarini +
indistinct +
5 cm50 mm <br />0.05 m <br /> (7 cm70 mm <br />0.07 m <br />) +
3 cm30 mm <br />0.03 m <br /> (11 cm110 mm <br />0.11 m <br />) +
ovate;ovatelanceolate or subrhombic +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
grayish yellow +  and gray +
0.8 cm8 mm <br />0.008 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
stellate-pubescent +
ellipsoid +  and ovoid +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Japanese snowbell +
1.6 cm16 mm <br />0.016 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
subinduplicate-valvate +  and imbricate +
1 cm10 mm <br />0.01 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
Conn. +, N.Y. +, Pa. +  and e Asia +
0-300 m +
curved +  and straight +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
not winged +, nutlike +, 3-valved +  and capsular +
loculicidal +
ellipsoid;globose +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Woods +
conspicuous +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
ovatelanceolate +, obovate +, oblong-ovate +  and ovate +
0.5 cm5 mm <br />0.005 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0 cm0 mm <br />0 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
entire +  and serrate +
lobed +, denticulate +  and toothed +
1.5 cm15 mm <br />0.015 m <br /> (5 cm50 mm <br />0.05 m <br />) +
perigynous;epigynous +
0.7 cm7 mm <br />0.007 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Flowering May–Jun +  and fruiting Aug–Oct. +
connate +, distinct +  and free +
ellipsoid;globose +
2(-4) times number of corolla lobes +
2-4[-5]-lobed +  and truncate +
Styrax bodinieri +, Styrax duclouxii +, Styrax grandiflorus +  and Styrax kotoensis +
Styrax japonicus +
species +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
800 cm8,000 mm <br />8 m <br /> (1,000 cm10,000 mm <br />10 m <br />) +
tree +, not suckering +  and shrub +