Cornus rugosa

Lamarck in J. Lamarck et al.

Encycl. 2: 115. 1786.

Common names: Roundleaf dogwood cornouiller rugueux
Endemic
Synonyms: Cornus circinata L’Héritier C. tomentulosa Michaux Swida circinata (L’Héritier) Small S. rugosa (Lamarck) Rydberg
Treatment appears in FNA Volume 12. Treatment on page 453. Mentioned on page 451, 454, 456.

Shrubs, to 5 m, flowering at 1 m; rhizomes present. Stems solitary, 5–10 dm apart; bark pink, light maroon, or green, not corky, loosely verrucose; branchlets yellow-green, with scattered hairs; lenticels protruding on 2d year branches, area surrounding them suffused with purple on older branches; pith white or tan. Leaves: petiole 10–23 mm; blade suborbiculate or broadly ovate, 7–15 × 5–14 cm, base usually subcordate to broadly cuneate, rarely nearly truncate, apex abruptly acuminate, abaxial surface pale green, hairs erect, dense, tufts of erect hairs present in axils of secondary-veins, adaxial surface dark green, hairs appressed or erect; secondary-veins 7–9 per side, evenly spaced, tertiary-veins usually prominent giving leaf a wrinkled appearance. Inflorescences flat-topped, 5–7 cm diam., peduncle 18–35 mm; branches and pedicels pink, turning red in fruit. Flowers: hypanthium constricted below sepals, appressed-hairy; sepals 0.2–0.4 mm; petals white, 2.6–3.8 mm. Drupes pale blue, globose, 5–8 mm diam.; stone globose, 4 mm diam., slightly ribbed, apex dimpled. 2n = 22.


Phenology: Flowering May–Jul; fruiting late Aug–Oct.
Habitat: Wooded slopes, forests, stream banks, lake shores.
Elevation: 0–2000 m.

Distribution

V12 577-distribution-map.jpg

Man., N.B., N.S., Ont., P.E.I., Que., Conn., Del., Ill., Ind., Iowa, Maine, Md., Mass., Mich., Minn., N.H., N.J., N.Y., Ohio, Pa., R.I., Tenn., Vt., Va., W.Va., Wis.

Discussion

Cornus rugosa appears to be extirpated from Tennessee (B. E. Wofford, pers. comm.). Putative hybrids in Michigan between C. rugosa and C. racemosa have been called C. ×friedlanderi W. H. Wagner. Putative hybrids between C. rugosa and C. sericea have been called C. ×slavinii Rehder, and reported from Maine, New York, Ontario, Prince Edward Island, and Wisconsin.

Selected References

None.

Lower Taxa

None.

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

... more about "Cornus rugosa"
versatile +  and dorsifixed +
curling +
ornamented +
Zack E. Murrell +  and Derick B. Poindexter +
Lamarck in J. Lamarck et al. +
green +, light maroon +  and pink +
verrucose +
usually subcordate +  and broadly cuneate +
Cornus +
7 cm70 mm <br />0.07 m <br /> (15 cm150 mm <br />0.15 m <br />) +
ovate +  and suborbiculate +
5cm;14cm +
not petaloid +
alternate +, subopposite +, whorled +  and opposite +
Roundleaf dogwood +  and cornouiller rugueux +
expanding +  and minute +
Man. +, N.B. +, N.S. +, Ont. +, P.E.I. +, Que. +, Conn. +, Del. +, Ill. +, Ind. +, Iowa +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, N.H. +, N.J. +, N.Y. +, Ohio +, Pa. +, R.I. +, Tenn. +, Vt. +, Va. +, W.Va. +  and Wis. +
0.5 cm5 mm <br />0.005 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
distinct +
globose +
0–2000 m. +
Wooded slopes, forests, stream banks, lake shores. +
erect +  and appressed +
appressed-hairy +
constricted +
5 cm50 mm <br />0.05 m <br /> (7 cm70 mm <br />0.07 m <br />) +
terminal +  and axillary +
alternate +, subopposite +, whorled +  and opposite +
intrastaminal +
1.8 cm18 mm <br />0.018 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
distinct +
recurved +  and spreading +
0.26 cm2.6 mm <br />0.0026 m <br /> (0.38 cm3.8 mm <br />0.0038 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
Flowering May–Jul +  and fruiting late Aug–Oct. +
[1-]2[-4]-carpellate +
tan +  and white +
connate +  and distinct +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
free +  and distinct +
pointed +  and rounded +
4 cm40 mm <br />0.04 m <br /> (?) +
globose +
Cornus circinata +, C. tomentulosa +, Swida circinata +  and S. rugosa +
Cornus rugosa +
Cornus subg. Thelycrania +
species +
deciduous +  and perennial +