Cornus alternifolia

Linnaeus f.

Suppl. Pl., 125. 1782.

Common names: Pagoda or alternate-leaf dogwood cornouiller à feuilles alternes
Endemic
Synonyms: Bothrocaryum alternifolium (Linnaeus f.) Pojarkova Cornus alterna Marshall Swida alternifolia (Linnaeus f.) Small
Treatment appears in FNA Volume 12. Treatment on page 450. Mentioned on page 444.

Shrubs or trees, to 12 m, flowering at 2 m. Stems clustered; bark thick, corky, plates rectangular, 0.5–1 cm wide; branchlets usually green to yellowish green, sometimes reddish-brown, glabrous; lenticels lenticular, then splitting periderm longitudinally. Leaves: petiole 20–50 mm; blade narrowly to broadly ovate or obovate, 4–12 × 2.3–7 cm, base usually cuneate, rarely rounded, apex abruptly acuminate or cuspidate, abaxial surface yellow-green, papillose, appressed-hairy, adaxial surface dark green, glabrate; secondary-veins 5–6 per side, most arising from basal 1/2. Inflorescences flat to hemispheric, 3–15 cm diam., 50–100-flowered; peduncle 30–60 mm; branches and pedicels yellow-green, turning red in fruit, alternate on central axis, proximal 2–3 orders with minute bracts. Flowers: hypanthium appressed-hairy; sepals 0–0.2 mm; petals cream, 2.5–4 mm. Drupes blue, globose, 5–8 mm diam.; stone subglobose, laterally compressed, 5–6 × 5–6 × 4 mm, slightly ribbed. 2n = 20.


Phenology: Flowering Apr–Jun; fruiting Jun–Aug.
Habitat: Deciduous hardwood forests, usually mesic or dry-mesic, loamy soils, rocky slopes.
Elevation: 10–2000 m.

Distribution

V12 278-distribution-map.jpg

St. Pierre and Miquelon, Man., N.B., Nfld. and Labr. (Nfld.), N.S., Ont., P.E.I., Que., Ala., Ark., Conn., Del., D.C., Fla., Ga., Ill., Ind., Iowa, Ky., Maine, Md., Mass., Mich., Minn., Miss., Mo., N.H., N.J., N.Y., N.C., Ohio, Pa., R.I., S.C., Tenn., Vt., Va., W.Va., Wis.

Discussion

Cornus alternifolia persists around abandoned homesteads in Nebraska and occasionally escapes, but does not appear to be naturalized there. A putative hybrid in Nova Scotia between C. alternifolia and C. sericea was named C. ×acadiensis by M. L. Fernald (1941c).

Selected References

None.

Lower Taxa

None.
... more about "Cornus alternifolia"
versatile +  and dorsifixed +
curling +
ornamented +
Zack E. Murrell +  and Derick B. Poindexter +
Linnaeus f. +
rounded +  and cuneate +
4 cm40 mm <br />0.04 m <br /> (12 cm120 mm <br />0.12 m <br />) +
obovate +  and ovate +
2.3cm;7cm +
not petaloid +
yellow-green +
Pagoda or alternate-leaf dogwood +  and cornouiller à feuilles alternes +
expanding +  and minute +
St. Pierre and Miquelon +, Man. +, N.B. +, Nfld. and Labr. (Nfld.) +, N.S. +, Ont. +, P.E.I. +, Que. +, Ala. +, Ark. +, Conn. +, Del. +, D.C. +, Fla. +, Ga. +, Ill. +, Ind. +, Iowa +, Ky. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Miss. +, Mo. +, N.H. +, N.J. +, N.Y. +, N.C. +, Ohio +, Pa. +, R.I. +, S.C. +, 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 +
10–2000 m. +
Deciduous hardwood forests, usually mesic or dry-mesic, loamy soils, rocky slopes. +
appressed-hairy +
3 cm30 mm <br />0.03 m <br /> (15 cm150 mm <br />0.15 m <br />) +
terminal +  and axillary +
flat +  and hemispheric +
lenticular +
intrastaminal +
yellow-green +
3 cm30 mm <br />0.03 m <br /> (6 cm60 mm <br />0.06 m <br />) +
distinct +
recurved +  and spreading +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
Flowering Apr–Jun +  and fruiting Jun–Aug. +
[1-]2[-4]-carpellate +
rectangular +
0.5cm +  and 1cm +
Suppl. Pl., +
connate +  and distinct +
0 cm0 mm <br />0 m <br /> (0.02 cm0.2 mm <br />2.0e-4 m <br />) +
free +  and distinct +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
compressed +  and subglobose +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Bothrocaryum alternifolium +, Cornus alterna +  and Swida alternifolia +
Cornus alternifolia +
Cornus subg. Mesomora +
species +
deciduous +  and perennial +
tree +  and shrub +