familyBetulaceae
subfamilyBetulaceae subfam. Coryloideae
genusCorylus
speciesCorylus cornuta
subspeciesCorylus cornuta subsp. cornuta
Difference between revisions of "Corylus cornuta subsp. cornuta"
Common names: Beaked hazel noisetier à long bec
EndemicSelected by author to be illustrated
Synonyms: Corylus cornuta var. megaphylla Victorin & J. RousseauCorylus rostrata unknown
Treatment appears in FNA Volume 3.
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Shrubs,</b> open spreading, to (4–)6 m. <b>Bark</b> light brown, smooth. <b>Branches</b> ascending; twigs glabrous to sparsely pubescent, without glandular hairs. <b>Winter</b> buds containing inflorescences ovoid, 3–5 × 3–4 mm, apex acute. <b>Leaves</b>: petiole glabrous to moderately pubescent, without glandular hairs. <b>Leaf</b> blade ovate to obovate or narrowly elliptic, often nearly angular and lobulate near apex, 5–12 × 3.5–9 cm, base narrowly cordate to narrowly rounded, margins coarsely and often irregularly doubly serrate, apex usually distinctly acuminate; surfaces abaxially glabrous to moderately pubescent, usually pubescent on major veins and in vein axils. <b>Inflorescences</b>: staminate catkins usually in clusters of 2–3, 4.5–6 × 0.5–0.8 cm; peduncles mostly 0.5–2 mm. <b>Nuts</b> in clusters of 2–6; involucral tubular beak long, narrow, 2–3(–4) times length of nuts, densely bristly. <b>2n</b> = 22, 28.</span><!-- |
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|subfamily=Betulaceae subfam. Coryloideae | |subfamily=Betulaceae subfam. Coryloideae | ||
|genus=Corylus | |genus=Corylus | ||
|species=Corylus cornuta | |species=Corylus cornuta | ||
|subspecies=Corylus cornuta subsp. cornuta | |subspecies=Corylus cornuta subsp. cornuta | ||
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Revision as of 14:44, 27 July 2019
Shrubs, open spreading, to (4–)6 m. Bark light brown, smooth. Branches ascending; twigs glabrous to sparsely pubescent, without glandular hairs. Winter buds containing inflorescences ovoid, 3–5 × 3–4 mm, apex acute. Leaves: petiole glabrous to moderately pubescent, without glandular hairs. Leaf blade ovate to obovate or narrowly elliptic, often nearly angular and lobulate near apex, 5–12 × 3.5–9 cm, base narrowly cordate to narrowly rounded, margins coarsely and often irregularly doubly serrate, apex usually distinctly acuminate; surfaces abaxially glabrous to moderately pubescent, usually pubescent on major veins and in vein axils. Inflorescences: staminate catkins usually in clusters of 2–3, 4.5–6 × 0.5–0.8 cm; peduncles mostly 0.5–2 mm. Nuts in clusters of 2–6; involucral tubular beak long, narrow, 2–3(–4) times length of nuts, densely bristly. 2n = 22, 28.
Phenology: Flowering very early spring.
Habitat: Moist to dry roadsides, edges of woods, fencerows, waste places, and thickets, or as understory in open woodlands
Elevation: 100–500 m
Distribution
St. Pierre and Miquelon, Alta., B.C., Man., N.B., Nfld., N.S., Ont., P.E.I., Que., Sask., Ala., Colo., Conn., Ga., Idaho, Iowa, Ky., Maine, Md., Mass., Mich., Minn., Mont., N.H., N.J., N.Y., N.C., N.Dak., Ohio, Pa., R.I., S.C., S.Dak., Tenn., Vt., Va., Wash., W.Va., Wis., Wyo.
Discussion
Like Corylus americana Walter, the beaked hazel (C. cornuta subsp. cornuta) is a weedy shrub and is sometimes considered a pest in carefully managed northern forests. The fruits are similar to those of C. americana, except that the surrounding bracts are connate into a long, narrow, tubular beak. Vegetative individuals of C. cornuta subsp. cornuta can be distinguished from C. americana by the absence of glandular hairs on the petioles and young twigs.
Selected References
None.
Lower Taxa
None.
... more about "Corylus cornuta subsp. cornuta"
St. Pierre and Miquelon +, Alta. +, B.C. +, Man. +, N.B. +, Nfld. +, N.S. +, Ont. +, P.E.I. +, Que. +, Sask. +, Ala. +, Colo. +, Conn. +, Ga. +, Idaho +, Iowa +, Ky. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Mont. +, N.H. +, N.J. +, N.Y. +, N.C. +, N.Dak. +, Ohio +, Pa. +, R.I. +, S.C. +, S.Dak. +, Tenn. +, Vt. +, Va. +, Wash. +, W.Va. +, Wis. + and Wyo. +
Moist to dry roadsides, edges of woods, fencerows, waste places, and thickets, or as understory in open woodlands +
Present +
Arbust. Amer., +
1785 +
Corylus cornuta subsp. cornuta +
Corylus cornuta +
subspecies +