Cornus racemosa Lam.

Northern swamp dogwood (en)

Species

Angiosperms > Cornales > Cornaceae > Cornus

Characteristics

Shrubs, to 5 m, flowering at 0.7 m; rhizomes present. Stems solitary, 2–10 dm apart; bark gray, brittle, verrucose, frequently forming small plates; branchlets pinkish brown, turning green-maroon, and later gray-maroon, 2 proximal internodes densely pubescent, distal internodes sparsely appressed-hairy; lenticels pale lenticular spots on new growth, uniformly scattered, especially on the distal internodes, protruding and extruding corky tissue on 2d year branches; pith white in 1st year branches, brown in older branches. Leaves: petiole 2–8 mm; blade lanceolate to ovate, 1.5–8 × 0.5–4 cm, base cuneate, apex acuminate to obtuse, abaxial surface pale green, adaxial surface green, turning maroon in full sun, both surfaces with hairs appressed, white to ferruginous; secondary veins 3–4(–5 on some sucker shoots) per side, evenly spaced. Inflorescences usually elongate, sometimes convex or pyramidal, 2.5–5 cm diam., peduncle 20–40 mm; branches and pedicels yellow-green, turning bright red. Flowers: hypanthium appressed-hairy; sepals 0.2–0.5 mm; petals white, 2.3–3 mm. Drupes usually white, occasionally pale blue, oblate-ellipsoid, laterally compressed, 4–8 mm diam.; stone oblate-ellipsoid, 3–6.5 mm diam., smooth, apex rounded to slightly pointed. 2n = 22.
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Shrub 1–5 m, often forming thickets; twigs glabrous, at first green, soon becoming tan and eventually gray-brown; old bark mostly smooth and gray; pith white (tan); lvs lanceolate to elliptic, mostly 4–8 cm, a third to half as wide, abruptly acuminate, cuneate at base, often papillose-whitened beneath, sparsely strigose to glabrous on both sides, with 3 or 4(5) lateral veins to a side; infls often very numerous, convex to often pyramidal and paniculiform; fr at first leaden, becoming white (light blue), 5–8 mm, on reddish pedicels; 2n=22. Moist soil, woods, thickets, roadsides, and streambanks; Me. and s. Que. to s. Man., s. to Va., s. Ill., and Mo., adjoining but only slightly overlapping the range of no. 6 [Cornus stricta Lam.]; the two might well be considered vars. of one sp. (C. paniculata; ? C. foemina, a doubtful name)
Life form perennial
Growth form shrub
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination entomogamy
Spread -
Mature width (meter) -
Mature height (meter) 2.4 - 3.0
Root system rhizome
Rooting depth (meter) 0.4
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

Fields, meadows, roadsides, fencerows, swamp margins; at elevations up to 1,500 metres.
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It is a temperate plant. It suits hardiness zone 3.
Light 3-6
Soil humidity 4-5
Soil texture 3-4
Soil acidity 2-7
Soil nutriment -
Hardiness (USDA) 4-6

Usage

Uses medicinal smoking
Edible fruits seeds
Therapeutic use Dermatological Aid (bark), Orthopedic Aid (bark), Veterinary Aid (bark), Analgesic (bark), Antidiarrheal (bark), Oral Aid (bark), Pediatric Aid (bark), Stimulant (bark), Hemorrhoid Remedy (bark), Tuberculosis Remedy (root), Gastrointestinal Aid (unspecified), Venereal Aid (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by cuttings or seedlings. Seeds needs scarification.
Mode cuttings seedlings
Germination duration (days) 90 - 730
Germination temperacture (C°) 7 - 9
Germination luminosity -
Germination treatment scarification
Minimum temperature (C°) -29
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Leaf

Cornus racemosa leaf picture by Danilo Diedrichs (cc-by-sa)
Cornus racemosa leaf picture by Gord Campbell (cc-by-sa)
Cornus racemosa leaf picture by Rodney Bethel (cc-by-sa)

Flower

Cornus racemosa flower picture by Steven Felegie (cc-by-sa)
Cornus racemosa flower picture by Brian Jacobs (cc-by-sa)
Cornus racemosa flower picture by Kay S (cc-by-sa)

Fruit

Cornus racemosa fruit picture by Megan Kujawa (cc-by-sa)
Cornus racemosa fruit picture by Danilo Diedrichs (cc-by-sa)
Cornus racemosa fruit picture by Heffner Laura (cc-by-sa)

Distribution

Cornus racemosa world distribution map, present in Canada, Micronesia (Federated States of), Malaysia, Nicaragua, and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:271653-1
WFO ID wfo-0000924819
COL ID YGM9
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Swida candidissima Swida gracilis Thelycrania racemosa Cornus albida Cornus comosa Cornus gracilis Cornus paniculata l'hér. Swida racemosa Cornus foemina subsp. racemosa Cornus paniculata var. albida Cornus paniculata var. radiata Cornus racemosa f. caeruleocarpa Cornus racemosa f. nielsenii Cornus racemosa