Difference between revisions of "Cornus racemosa"
Encycl. 2: 116. 1786.
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|name=Cornus albida | |name=Cornus albida | ||
|authority=Ehrhart | |authority=Ehrhart | ||
+ | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=C. foemina subsp. racemosa | |name=C. foemina subsp. racemosa | ||
|authority=(Lamarck) J. S. Wilson | |authority=(Lamarck) J. S. Wilson | ||
+ | |rank=subspecies | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=C. gracilis | |name=C. gracilis | ||
|authority=Koehne | |authority=Koehne | ||
+ | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=C. paniculata | |name=C. paniculata | ||
|authority=L'Heritier | |authority=L'Heritier | ||
+ | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=C. paniculata var. albida | |name=C. paniculata var. albida | ||
|authority=(Ehrhart) Pursh | |authority=(Ehrhart) Pursh | ||
+ | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=C. paniculata var. radiata | |name=C. paniculata var. radiata | ||
|authority=Pursh | |authority=Pursh | ||
+ | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Swida candidissima | |name=Swida candidissima | ||
|authority=Small | |authority=Small | ||
+ | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=S. racemosa | |name=S. racemosa | ||
|authority=(Lamarck) Moldenke | |authority=(Lamarck) Moldenke | ||
+ | |rank=species | ||
}} | }} | ||
|hierarchy=Cornaceae;Cornus;Cornus subg. Thelycrania;Cornus racemosa | |hierarchy=Cornaceae;Cornus;Cornus subg. Thelycrania;Cornus racemosa | ||
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Cornus racemosa | name=Cornus racemosa | ||
− | |||
|authority=Lamarck in J. Lamarck et al. | |authority=Lamarck in J. Lamarck et al. | ||
|rank=species | |rank=species | ||
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|publication year=1786 | |publication year=1786 | ||
|special status=Endemic | |special status=Endemic | ||
− | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/eaa6e58056e40c9ef614d8f47aea294977a1a5e9/coarse_grained_fna_xml/V12/V12_1005.xml |
|genus=Cornus | |genus=Cornus | ||
|subgenus=Cornus subg. Thelycrania | |subgenus=Cornus subg. Thelycrania |
Revision as of 19:54, 16 December 2019
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.
Phenology: Flowering May–Jul; fruiting Aug–Oct.
Habitat: Fields, meadows, roadsides, fencerows, swamp margins.
Elevation: 0–1500 m.
Distribution
![V12 1005-distribution-map.jpg](/w/images/9/98/V12_1005-distribution-map.jpg)
Man., Ont., Que., Conn., D.C., Ill., Ind., Iowa, Ky., Maine, Md., Mass., Mich., Minn., Mo., Nebr., N.H., N.J., N.Y., N.C., Ohio, Pa., R.I., S.Dak., Tex., Vt., Va., W.Va., Wis.
Discussion
Cornus racemosa, much like C. foemina and C. obliqua, has a coronulate or minutely papillate abaxial leaf surface, visible under high magnification. Cornus gracilis may be a hybrid between C. racemosa and C. foemina. Hybrids between C. obliqua and C. racemosa and C. rugosa are discussed under those species.
Selected References
None.