Cornus canadensis L.

Bunchberry dogwood (en), Quatre-temps (fr), Cornouiller du Canada (fr)

Species

Angiosperms > Cornales > Cornaceae > Cornus

Characteristics

Stems erect, green, 5–25 cm, appressed-hairy; nodes 4–6, internodes progressively longer distally; branches only at distalmost node, much shorter than distal internodes so stems appear unbranched. Leaves at all but distalmost node non-chlorophyllous, opposite, scalelike, caducous, at distalmost node chlorophyllous, appearing to be in whorl of 6 (sometimes 4 on sterile stems), well developed, persistent; distalmost leaves: petiole 0.5–2.8 mm; blade obovate, ovate, elliptic, or rhombic, 2–7 × 1–4.5 cm, apex acute or short acuminate, abaxial surface pale green, sparsely appressed-hairy to glabrate, adaxial surface green, appressed-hairy; secondary veins 2–3 per side, all arising from proximal 1/2. Inflorescences 12–40-flowered; peduncle 10–30 mm; primary branches 0.5–2.5 mm; bracts greenish white to white, occasionally red-tipped or red-tinged, ± equal, ovate, 5–15 × 5–15 mm, apex acute to acuminate. Pedicels 0.5–3 mm, sparsely appressed-hairy. Flowers: hypanthium cream, 1–2 mm, densely appressed-hairy; sepals cream, turning purple as fruit matures, 0.1–0.3 mm, apex rounded, membranous, glabrous, eglandular; petals cream, 1–2 mm, apical awn 0.3–1.2 mm; nectary cream or purplish black. Drupes 5–15 per infructescences, red, globose, 6–9 mm; stone ovoid, 2.3–3.3 × 1.7–2.3 mm, smooth, apex rounded. 2n = 22, 44.
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Herblike shrubs, perennial, rhizomatous, 10–20 cm tall. Rhizomes creeping, slender. Vertical stems slender, unbranched. Leaves opposite, often appearing as a whorl of 6 at terminal node due to compression of internodes, 2 larger and 4 smaller; smaller ones developing from axillary buds of larger leaves; leaves at lower nodes rudimentary; petiole 2–3 mm; leaf blade obovate to ± diamond-shaped, 3.5–4.8 × 1.5–2.5 cm, papery, veins 2 or 3, base cuneate, margin entire, apex shortly acuminate. Inflorescences compound cymes, terminal; bracts white, broadly ovate, 0.8–1.2 × 0.5–1.1 cm, with 7 parallel veins. Flowers white, ca. 2 mm in diam. Calyx tube obovate, ca. 1 mm, densely pubescent with grayish white appressed trichomes; teeth higher than disk. Petals reflexed, creamy white, ovate-lanceolate, 1.5–2 mm. Stamens ca. 1 mm; anthers yellowish white, narrowly ovoid. Style ca. 1 mm, glabrous. Fruit red at maturity, globose, ca. 5 mm in diam.; stones ellipsoid-ovoid. Fl. Jul–Aug, fr. Aug–Sep.
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)
A herb which keeps growing from year to year. It is deciduous and low and spreading. It grows 10-20 cm tall. The rhizomes are creeping and slender. The leaves are in rings and are 25 mm long and oval or sword shaped. The leaves turn red in autumn. There are white bracts around the flower-heads. The flowers are silvery white. The fruit are small, bright red berries.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination entomogamy
Spread -
Mature width (meter) 0.75 - 1.0
Mature height (meter) 0.2
Root system fibrous-root rhizome
Rooting depth (meter) 0.4
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway c3

Environment

It is a cool temperate plant. It needs cool moist conditions. It can tolerate cold. It can grow in sun or shade. It can grow in sandy or clay soils. Moist acid soils are best but it will grow in limestone soils. It suits hardiness zones 2-8.
More
Always in large groups or thickets in moist, mossy, occasionally dry broadleaf or coniferous forests, roadbanks, marshes, bogs, usually in peaty soils; at elevations up to 3,400 metres.
It is a cold temperate plant. It grows in the moist tundra in Alaska.
Light 3-7
Soil humidity 4-8
Soil texture 2-5
Soil acidity 3-6
Soil nutriment -
Hardiness (USDA) 2-6

Usage

The fruit are eaten. They have little taste. They are dried and added to breakfast cereal. The fruit can be made into puddings, pies, jellies and sauces. The large stones need to be strained out of jelly and jam. Also other fruits can be added for flavour.
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The ripe berries are eaten fresh.
Uses environmental use medicinal ornamental smoking wood
Edible fruits
Therapeutic use Febrifuge (bark), Analgesic (bark), Tonic (bark), Eye Medicine (fruit), Anticonvulsive (fruit), Cathartic (leaf), Anticonvulsive (leaf), Dermatological Aid (leaf), Anticonvulsive (root), Gastrointestinal Aid (root), Pediatric Aid (root), Eye Medicine (root), Tuberculosis Remedy (tuber), Analgesic (unspecified), Cold Remedy (unspecified), Gynecological Aid (unspecified), Unspecified (unspecified), Febrifuge (unspecified), Orthopedic Aid (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

Plants can be grown from washed seed. They can also be grown from cuttings.
Mode cuttings divisions seedlings
Germination duration (days) 90 - 730
Germination temperacture (C°) 16 - 18
Germination luminosity -
Germination treatment scarification
Minimum temperature (C°) -45
Optimum temperature (C°) 10 - 18
Size -
Vigor -
Productivity -

Images

Habit

Cornus canadensis habit picture by nathan nate (cc-by-sa)
Cornus canadensis habit picture by Matthias Foellmer (cc-by-sa)
Cornus canadensis habit picture by A. Padron (cc-by-sa)

Leaf

Cornus canadensis leaf picture by hannah hannah (cc-by-sa)
Cornus canadensis leaf picture by sam humphries (cc-by-sa)
Cornus canadensis leaf picture by Maureen Drury (cc-by-sa)

Flower

Cornus canadensis flower picture by L H (cc-by-sa)
Cornus canadensis flower picture by Lou Delayance (cc-by-sa)
Cornus canadensis flower picture by Ethan Greer (cc-by-sa)

Fruit

Cornus canadensis fruit picture by Rudolf Mittermayer (cc-by-sa)
Cornus canadensis fruit picture by kirstee harper (cc-by-sa)
Cornus canadensis fruit picture by Jean Philippe girard (cc-by-sa)

Distribution

Cornus canadensis world distribution map, present in Canada, China, Colombia, France, Micronesia (Federated States of), Japan, Myanmar, Malaysia, Korea (Democratic People's Republic of), and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:271519-1
WFO ID wfo-0000924607
COL ID YGHD
BDTFX ID -
INPN ID 762042
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Chamaepericlymenum canadense f. purpurascens Arctocrania canadensis Cornus cyananthus Cornus fauriei Cornus suffruticosa Chamaepericlymenum canadense Eukrania canadensis Cornus canadensis f. albomacula Cornus canadensis f. alpestris Cornus canadensis f. aphylla Cornus canadensis f. dutillyi Cornus canadensis f. elongata Cornus canadensis f. florulenta Cornus canadensis f. foliolosa Cornus canadensis f. infraverticillata Cornus canadensis f. medeoloides Cornus canadensis f. ornata Cornus canadensis f. purpurascens Cornus canadensis f. ramosa Cornus canadensis f. rosea Cornus canadensis f. secunda Cornus canadensis f. virescens Cornus canadensis f. viridis Cornus canadensis f. semivirescens Eukrania cyananthes Cornus canadensis f. canadensis Cornella canadensis Cynoxylon canadense Mesomora canadensis Cornus canadensis var. alpestris Cornus canadensis var. dutillyi Cornus canadensis subsp. pristina Cornus herbacea var. canadensis Cornus canadensis f. bifoliata Cornus canadensis f. connatifolia Cornus canadensis