Biology:Cornus racemosa

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Short description: Species of tree

Cornus racemosa
Northern Swamp Dogwood berries.jpg
Berries

Secure (NatureServe)[1]
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Cornales
Family: Cornaceae
Genus: Cornus
Subgenus: Cornus subg. Kraniopsis
Species:
C. racemosa
Binomial name
Cornus racemosa
Lam.
Cornus racemosa range map 1.png
Natural range of Cornus racemosa
Synonyms

[2]

  • Cornus albida Ehrh.
  • Cornus comosa Raf.
  • Cornus foemina subsp. racemosa (Lam.) J.S.Wilson
  • Cornus gracilis Koehne
  • Cornus paniculata L'Hér.
  • Cornus paniculata var. albida (Ehrh.) Pursh
  • Cornus paniculata var. radiata Pursh
  • Cornus racemosa f. caeruleocarpa Oswald
  • Cornus racemosa f. nielsenii J.W.Moore
  • Swida candidissima Small
  • Swida gracilis (Koehne) Soják
  • Swida racemosa (Lam.) Moldenke
  • Thelycrania racemosa (Lam.) Tsitsin

Cornus racemosa, the northern swamp dogwood, gray dogwood, or panicle dogwood, is a shrubby plant native to southeastern Canada and the northeastern United States. It is a member of the dogwood genus Cornus and the family Cornaceae.

Description

Gray dogwood grows 1.2 to 3 m (4 to 10 ft) high, rarely to 8 m (26 ft).[3] It often sends up suckers from underground rhizomes, forming thickets. Its bark is gray and its twigs have white pith. The leaves are 4–8 cm (1 1⁄2–3 1⁄4 in) long and 1–4 cm (1⁄2–1 1⁄2 in) wide, and typically have 3 or 4 pairs of lateral veins, fewer than other dogwood species.[4] The plant grows upright with a rounded habit, oppositely arranged leaves, and terminally born flowers. The white flowers are small, with four petals 2.3 to 3 mm (0.091 to 0.118 in) long, and clustered together in rounded clusters 2.5 to 5 cm (1 to 2 in) wide called diachasial cymes,[4] produced sometime between May and July.[5] After flowering, green fruits (drupes) are produced, and they ripen and turn white from August to October.[5] The flowers and fruit are attached to the plant by bright red pedicels. Many species of birds feed on the fruits.[4] Old branches grow slowly, while new stems are fast growing. In the fall the foliage can take on a reddish or purplish color, though it is not overly showy from a distance.

Classification

Cornus racemosa has been variably treated as a subspecies of Cornus foemina Mill., with which it overlaps.[5]

It occasionally hybridizes with Cornus amomum (silky dogwood), the products of which are named Cornus × arnoldiana.[6]

References

  1. ↑ "NatureServe Explorer 2.0". https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.139198/Cornus_racemosa. 
  2. ↑ "Cornus racemosa Lam. | Plants of the World Online | Kew Science". https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:271653-1. 
  3. ↑ Coladonato, Milo (1993), Cornus racemosa, US Department of Agriculture (USDA), Forest Service (USFS), Rocky Mountain Research Station, Fire Sciences Laboratory, https://www.fs.fed.us/database/feis/plants/tree/corrac/all.html 
  4. ↑ 4.0 4.1 4.2 "Swida racemosa (gray dogwood)", Go Botany (New England Wildflower Society), https://gobotany.nativeplanttrust.org/species/Swida/racemosa/, retrieved 8 November 2015 
  5. ↑ 5.0 5.1 5.2 Murrell, Zack E.; Poindexter, Derick B. (2016), "Cornus racemosa", in Flora of North America Editorial Committee, Flora of North America North of Mexico (FNA), 12, New York and Oxford, http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=10219 
  6. ↑ "Cornus × arnoldiana". World Checklist of Selected Plant Families. Royal Botanic Gardens, Kew. http://wcsp.science.kew.org/namedetail.do?name_id=47284. Retrieved 2018-07-28. 

External links

Wikidata ☰ Q1134291 entry



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