Deutzia scabra

Thunberg

Nov. Gen. Pl., 20. 1781.

Introduced
Synonyms: Deutzia crenata Siebold & Zuccarini
Treatment appears in FNA Volume 12. Treatment on page 472. Mentioned on page 471.

Shrubs 10–30 dm. Branches erect to ascending. Leaves: petiole 1–3 mm, sparsely to densely stellate-pubescent; blade ovatelanceolate to ovate, 30–80 × 15–50 mm, base rounded or broadly cuneate, margins crenate-denticulate, apex acute to acuminate, abaxial surface light green, densely stellate-pubescent, trichomes 10–20-rayed, adaxial dark green, stellate-pubescent, trichomes 4–6-rayed. Inflorescences racemes or panicles, loose, 5–50-flowered, 4–10 × 2–3 cm, stellate-pubescent; peduncle absent. Pedicels 2–10 mm, sparsely stellate-pubescent. Flowers faintly fragrant, 8–20 mm; hypanthium campanulate, 2.5–5 × 3–4 mm, densely stellate-pubescent; sepals triangular to ovate, 1.5–2.5 × 1–2.2 mm, apex obtuse, surfaces stellate-pubescent; petals valvate, white or pinkish, narrowly elliptic to oblong, 7–15 × 2.5–3 mm, stellate-pubescent abaxially, glabrous or sparsely stellate-pubescent adaxially; filaments dorsiventrally flattened, narrowly oblong, outer 7–9 mm, apex 2-lobed, inner 5–6 mm, apex 2-lobed; styles 3 (–4), 5–11 mm. Capsules 3.8–5 × 4–5 mm. Seeds 1.5–2 mm. 2n = 26, 130 (Asia).


Phenology: Flowering Apr–Jul.
Habitat: Roadsides, waste areas, homesteads, parks.
Elevation: 10–200 m.

Distribution

V12 921-distribution-map.jpg

Introduced; Ark., Conn., Fla., Ga., Ill., Ky., Md., Mass., Mich., N.J., N.Y., N.C., Pa., R.I., Utah, Vt., Va., W.Va., e Asia (Japan)

Discussion

Deutzia crenata and D. scabra are highly variable and have long been variously interpreted. A. J. Rehder (1920), assisted by H. O. Juel of Uppsala University, studied the three specimens at UPS that Thunberg had named D. scabra. He selected one as the type but said it was the same as the later-described D. crenata. J. Ohwi (1965) listed eight synonyms for D. scabra and interpreted D. crenata as consisting of three varieties, which included six synonyms (including “D. scabra Thunberg in part”). In view of the above, and the many cultivars that have been developed, D. crenata is treated here as a synonym of D. scabra.

Selected References

None.

Lower Taxa

None.

... more about "Deutzia scabra"
stellate-pubescent +
stellate-pubescent +
distinct +
oblong +  and flattened +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
2-lobed (?) +, Obtuse (?) +, Acute (?) +  and Acuminate (?) +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Ronald L. McGregor† +
Thunberg +
exfoliating +
cuneate +  and rounded +
3 cm30 mm <br />0.03 m <br /> (8 cm80 mm <br />0.08 m <br />) +
ovatelanceolate +  and ovate +
15mm;50mm +
erect;ascending +
0.38 cm3.8 mm <br />0.0038 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
hemispheric +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Ark. +, Conn. +, Fla. +, Ga. +, Ill. +, Ky. +, Md. +, Mass. +, Mich. +, N.J. +, N.Y. +, N.C. +, Pa. +, R.I. +, Utah +, Vt. +, Va. +, W.Va. +  and e Asia (Japan) +
10–200 m. +
fragrant +
0.8 cm8 mm <br />0.008 m <br /> (2 cm20 mm <br />0.02 m <br />) +
loculicidal +  and septicidal +
intercostal +  and interstylar +
Roadsides, waste areas, homesteads, parks. +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
stellate-pubescent +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
axillary +  and terminal +
stellate-pubescent +
semideciduous +  and deciduous +
acrodromous +  and pinnate +
crenate-denticulate +
1/2 +  and 0 +
5-50-flowered +
stellate-pubescent +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
stellate-pubescent +
0.2 cm2 mm <br />0.002 m <br /> (1 cm10 mm <br />0.01 m <br />) +
imbricate +  and valvate +
0.7 cm7 mm <br />0.007 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
stellate-pubescent +  and glabrous +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
stellate-pubescent +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Flowering Apr–Jul. +
3-5-carpellate +
Nov. Gen. Pl., +
5-50-flowered +
stellate-pubescent +
10 +  and 20 +
ellipsoid +
deciduous +
connate +  and distinct +
stellate-pubescent +, short-hairy +  and glabrous +
triangular +  and ovate +
enlarged +
0.1 cm1 mm <br />0.001 m <br /> (0.22 cm2.2 mm <br />0.0022 m <br />) +
reddish +, brownish +  and grayish +
Introduced +
free +, connate +  and distinct +
erect;spreading +
2 +  and 12 +
persistent +
distinct +
connate +  and distinct +
0.5 cm5 mm <br />0.005 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
stellate-pubescent +
Deutzia crenata +
Deutzia scabra +
species +
deciduous +  and evergreen +