Cornus asperifolia

Michaux

Fl. Bor. Amer. 1: 93. 1803.

Common names: Eastern roughleaf dogwood
Endemic
Synonyms: Cornus excelsa var. beyrichiana C. A. Meyer C. foemina subsp. microcarpa (Nash) J. S. Wilson C. microcarpa Nash C. sericea var. asperifolia (Michaux) de Candolle C. stricta var. asperifolia (Michaux) Feay Swida asperifolia (Michaux) Small S. microcarpa (Nash) Small
Treatment appears in FNA Volume 12. Treatment on page 455. Mentioned on page 451, 456.

Shrubs, to 4 m, flowering at 1.5 m; rhizomes present. Stems solitary, 1–5 dm apart; bark gray, splitting into small plates; branchlets green to bronze, often tinged with maroon, densely pubescent; lenticels inconspicuous on new growth, periderm around them swelling to form broad raised areas on 2d year branches; pith white. Leaves: petiole 2–7 mm; blade elliptic to ovate, 3–8.5 × 2–4 cm, base usually rounded, sometimes cuneate, apex acute, abaxial surface pale green, hairs erect, curling, white, adaxial surface dark green, hairs spreading to erect, occasionally 1 arm appressed; secondary-veins 3–4 per side, evenly spaced. Inflorescences pyramidal, 2–5 cm diam., peduncle 15–45 mm; branches and pedicels yellow-green, turning maroon in fruit. Flowers: hypanthium densely appressed-hairy; sepals 0.2–0.8 mm; petals white, 1.7–2.4 mm. Drupes blue to whitish blue, globose, 4–7 mm diam.; stone globose, 3–5 mm diam., smooth or slightly grooved, apex rounded.


Phenology: Flowering Apr–Jun; fruiting Aug–Sep.
Habitat: Marl or limestone outcrops, hammocks, swamp margins.
Elevation: 0–100 m.

Distribution

V12 375-distribution-map.jpg

Ala., Fla., Ga., Miss., N.C., S.C.

Discussion

G. V. Nash (1896b) collected Cornus asperifolia at River Junction, Florida; based on the conflicting reports of fruit colors given by A. W. Chapman (1860) and J. M. Coulter and W. H. Evans (1890) for the two rough-leaved dogwoods (C. asperifolia and C. drummondii), Nash decided to name the rough-leaved dogwood of Florida with blue fruit as C. microcarpa. However, the description by Michaux, even without a reference to fruit color, cannot apply to C. drummondii, because the locality is given as “Carolinae inferioris,” and C. drummondii does not occur in South Carolina.

Selected References

None.

Lower Taxa

None.

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

... more about "Cornus asperifolia"
versatile +  and dorsifixed +
Rounded (?) +  and Acute (?) +
swelling +
curling +
ornamented +
Zack E. Murrell +  and Derick B. Poindexter +
Michaux +
cuneate +  and rounded +
Cornus +
3 cm30 mm <br />0.03 m <br /> (8.5 cm85 mm <br />0.085 m <br />) +
elliptic +  and ovate +
2cm;4cm +
not petaloid +
alternate +, subopposite +, whorled +  and opposite +
yellow-green +
Eastern roughleaf dogwood +
expanding +  and minute +
Ala. +, Fla. +, Ga. +, Miss. +, N.C. +  and S.C. +
blue +  and whitish blue +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
distinct +
globose +
0–100 m. +
Marl or limestone outcrops, hammocks, swamp margins. +
curling +
spreading +  and erect +
appressed-hairy +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
terminal +  and axillary +
alternate +, subopposite +, whorled +  and opposite +
inconspicuous +
intrastaminal +
yellow-green +
1.5 cm15 mm <br />0.015 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
distinct +
recurved +  and spreading +
0.17 cm1.7 mm <br />0.0017 m <br /> (0.24 cm2.4 mm <br />0.0024 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Flowering Apr–Jun +  and fruiting Aug–Sep. +
[1-]2[-4]-carpellate +
Fl. Bor. Amer. +
connate +  and distinct +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
free +  and distinct +
pointed +  and rounded +
grooved +  and smooth +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
globose +
Cornus excelsa var. beyrichiana +, C. foemina subsp. microcarpa +, C. microcarpa +, C. sericea var. asperifolia +, C. stricta var. asperifolia +, Swida asperifolia +  and S. microcarpa +
Cornus asperifolia +
Cornus subg. Thelycrania +
species +
deciduous +  and perennial +