Carex cephaloidea — Details

Carex sparganioides var. cephaloidea (Dewey) J. Carey:
Canada (North America)
United States (North America)

Anonymous. 1986. List-Based Rec., Soil Conserv. Serv., U.S.D.A. Database of the U.S.D.A., Beltsville. http://www.tropicos.org/Reference/1103
Gleason, H. A. & A. Cronquist. 1968. The Pteridophytoa, Gymnospermae and Monocotyledoneae. 1: 1–482. In H. A. Gleason Ill. Fl. N. U.S. (ed. 3). New York Botanical Garden, New York. http://www.tropicos.org/Reference/1495

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Carex cephaloidea (Dewey) Dewey:
Canada (North America)
United States (North America)

Anonymous. 1986. List-Based Rec., Soil Conserv. Serv., U.S.D.A. Database of the U.S.D.A., Beltsville. http://www.tropicos.org/Reference/1103
Great Plains Flora Association. 1986. Fl. Great Plains i–vii, 1–1392. University Press of Kansas, Lawrence. http://www.tropicos.org/Reference/637
Fernald, M. 1950. Manual (ed. 8) i–lxiv, 1–1632. American Book Co., New York. http://www.tropicos.org/Reference/1327
Voss, E. G. 1972. Gymnosperms and Monocots. i–xv, 1–488. In Michigan Fl. Cranbrook Institute of Science, Bloomfield Hills, Michigan. http://www.tropicos.org/Reference/1494

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National Distribution

Canada

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

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Physical Description

Morphology

Description

Plants without conspicuous rhizomes. Culms 30–120 cm, 2.5–4 mm wide basally, 0.7–1 mm wide distally. Leaves: proximal sheaths loose, longitudinally green-and-white-striped and green-and-white-mottled on back, with prominent transverse veins, fronts hyaline, transversely rugose; ligules 3–7 mm, slightly longer than wide; widest leaf blades (4–)5–8 mm wide. Inflorescences with 5–10 spikes, 1.5–4 cm × 8–10 mm; proximal internodes usually not more than 10 mm, 0.7–1.5(–2) times as long as proximal spikes; proximal bracts to 2 cm; spikes with 6–20 ascending to spreading perigynia. Pistillate scales hyaline or pale brown with green midvein, ovate-circular, 1.5–2 × 1.1–1.5 mm, 1/2 length of perigynia, apex subobtuse to acute. Anthers 0.7–1.3 mm. Perigynia green, with narrow wing not more than 0.1 mm wide distally, weakly 4–7-veined abaxially, 3–4.5 × 1.5–2.5 mm, margins serrulate distally; beak 1–1.3 mm, apical teeth 0.2–0.5 mm. Achenes suborbiculate, 1.6–2 × 1.3–1.7 mm. 2n = 50.

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Diagnostic Description

Synonym

Carex muricata Linnaeus var. cephaloidea Dewey, Amer. J. Sci. Arts 11: 308. 1826; C. sparganioides Muhlenberg ex Willdenow var. cephaloidea (Dewey) J. Carey ex A. Gray

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Ecology

Habitat

Habitat & Distribution

Fruiting late spring–early summer. Dry to mesic deciduous and mixed forests and forest margins on neutral or basic soils; 20–300 m; N.B., Ont., Que.; Conn., Ill., Ind., Iowa, Maine, Mass., Mich., Minn., N.H., N.J., N.Y., Ohio, Pa., Vt., Wis.

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Carex cephaloidea

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 2
Species: 4
Species With Barcodes: 1

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Source: Barcode of Life Data Systems (BOLD)

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Conservation

Conservation Status

NatureServe Conservation Status

Rounded Global Status Rank: G5 - Secure

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National NatureServe Conservation Status

Canada

Rounded National Status Rank: N5 - Secure

United States

Rounded National Status Rank: NNR - Unranked

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