Cornus florida

Linnaeus

Sp. Pl. 1: 117. 1753.

Common names: Flowering dogwood
WeedyIllustrated
Synonyms: Benthamidia florida (Linnaeus) Spach Cynoxylon floridum (Linnaeus) Small
Treatment appears in FNA Volume 12. Treatment on page 446. Mentioned on page 444, 445.

Trees to 20 m, flowering at 2 m. Stems clustered, occasionally decumbent and rooting at nodes, bark corky, forming rectangular plates 0.5–1 cm wide; branchlets green, maroon, or red, appressed-hairy; lenticels maroon swellings. Leaves: petiole 3–20 mm; blade ovate, elliptic, or obovate, 5–12 × 2–7 cm, base cuneate to rounded, apex abruptly acuminate, abaxial surface whitish, appressed-hairy, tufts of erect hairs present in axils of secondary-veins, adaxial surface dark green, appressed-hairy; secondary-veins 5–7 per side, most arising from proximal 1/2. Inflorescences flat-topped, 1–2 cm diam., 15–30-flowered, subtended by 2 pairs of cataphylls; peduncle 10–20 mm; petaloid bracts 4, surrounding and enclosing inflorescence through winter, white or tinged with red and with brown or white callous at apex, obovate to obcordate, 2–6 × 1–4.5 cm, apex rounded or emarginate. Flowers: hypanthium appressed-hairy; sepals 0.5–0.8 mm; petals cream or yellow-green, 3–3.5 mm. Drupes usually red, rarely yellow, drying black, spreading from each other, round in cross-section, 13–18 × 6–9 mm; stone ellipsoid, 10–12 × 4–7 mm, smooth. 2n = 44.


Phenology: Flowering Mar–Jun; fruiting Aug–Oct.
Habitat: Deciduous, mixed, and pine forests.
Elevation: 0–2000 m.

Distribution

V12 909-distribution-map.jpg

Ont., Ala., Ark., Conn., Del., D.C., Fla., Ga., Ill., Ind., Kans., Ky., La., Maine, Md., Mass., Mich., Miss., Mo., N.H., N.J., N.Y., N.C., Ohio, Okla., Pa., R.I., S.C., Tenn., Tex., Vt., Va., W.Va., e Mexico

Discussion

Mexican populations of Cornus florida sometimes have been treated as C. urbinia Rose or C. florida subsp. urbinia (Rose) Rickett, distinguished primarily by bract size, shape, and apical cohesion following expansion. North American and Mexican populations overlap in these characters and are treated here as a single taxon.

Cornus florida, the state tree of Missouri and Virginia and the state flower of North Carolina, is an understory tree that can form spectacular displays when flowering. Cultivars with pink to red bracts are often planted as ornamentals. Dogwood anthracnose is causing serious declines in C. florida throughout its range.

Selected References

None.

Lower Taxa

None.
... more about "Cornus florida"
versatile +  and dorsifixed +
white +  and brown +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Emarginate (?) +, Rounded (?) +, Obovate (?) +  and Obcordate (?) +
1cm +  and 4.5cm +
curling +
ornamented +
Zack E. Murrell +  and Derick B. Poindexter +
Linnaeus +
0.5cm;1cm +
cuneate +  and rounded +
Cornus sect. Cynoxylon +
5 cm50 mm <br />0.05 m <br /> (12 cm120 mm <br />0.12 m <br />) +
obovate +, elliptic +  and ovate +
2cm;7cm +
tinged;white +
Red (?) +, Maroon (?) +  and Green (?) +
appressed-hairy +
Flowering dogwood +
expanding +  and minute +
Ont. +, Ala. +, Ark. +, Conn. +, Del. +, D.C. +, Fla. +, Ga. +, Ill. +, Ind. +, Kans. +, Ky. +, La. +, Maine +, Md. +, Mass. +, Mich. +, Miss. +, Mo. +, N.H. +, N.J. +, N.Y. +, N.C. +, Ohio +, Okla. +, Pa. +, R.I. +, S.C. +, Tenn. +, Tex. +, Vt. +, Va. +, W.Va. +  and e Mexico +
black +, yellow +  and red +
distinct +
1.3 cm13 mm <br />0.013 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
0–2000 m. +
Deciduous, mixed, and pine forests. +
appressed-hairy +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
terminal +  and axillary +
intrastaminal +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
distinct +
recurved +  and spreading +
0.3 cm3 mm <br />0.003 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Flowering Mar–Jun +  and fruiting Aug–Oct. +
[1-]2[-4]-carpellate +
rectangular +
connate +  and distinct +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
Weedy +  and Illustrated +
free +  and distinct +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
ellipsoid +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
Benthamidia florida +  and Cynoxylon floridum +
Cornus florida +
Cornus subg. Cynoxylon +
species +
deciduous +  and perennial +