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Carex amplectens Mack.
Life   Plantae   Monocotyledoneae   Cyperaceae   Carex

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Pucciniaceae  Puccinia caricis @ BPI (1)

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Carex amplectens Mack.
claspbract sedge

General Information
Symbol: CAAM9
Group: Monocot
Family: Cyperaceae
Duration: Perennial
Growth Habit : Graminoid
Native Status : L48   N
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Native Status:
lower 48 status L48    Alaska status AK    Hawaii status HI    Puerto Rico status PR    Virgin Islands status VI    Navassa Island NAV    Canada status CAN    Greenland status GL    Saint Pierre and Michelon status SPM    North America NA   





Click on a scientific name below to expand it in the PLANTS Classification Report.
Rank Scientific Name and Common Name
Kingdom Plantae – Plants
Subkingdom Tracheobionta – Vascular plants
Superdivision Spermatophyta – Seed plants
Division Magnoliophyta – Flowering plants
Class Liliopsida – Monocotyledons
Subclass Commelinidae
Order Cyperales
Family Cyperaceae – Sedge family
Genus Carex L. – sedge
Species Carex amplectens Mack. – claspbract sedge

Subordinate Taxa

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Wetland Status

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Description of Values

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Following modified from Flora of North America
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FNA Vol. 23 Page 341, 344, 360, 361 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 23 | Cyperaceae | Carex

133. Carex amplectens Mackenzie, Bull. Torrey Bot. Club. 43: 611. 1917.

Plants densely cespitose. Culms (30—)50—90 cm. Leaves: sheaths sometimes adaxially brownish tinged, summits rounded to acute, usually prolonged to 1—5 mm beyond collar; distal ligules 1.5—4.5 mm, often shorter than sheath summits; blades (3—)4—5(—7) per fertile culm, 20—45 cm × 3—5(—6.5) mm. Inflorescences open, usually dense distally, green, silvery, or pale gold, 4—6.5 cm × 10—18 mm; proximal internode (7—)10—20 mm; 2d internode 4—8.5 mm; proximal bracts leaflike or bristlelike, if leaflike then much longer than inflorescence, base usually surrounding culm. Spikes (6—)10—20, distant, distinct, obovoid, or sometimes lanceoloid to ovoid, (12—)14—17 × 5—8 mm, base usually attenuate, apex rounded or acute. Pistillate scales white-hyaline with conspicuous green midstripe, sometimes tinged pale gold, ovate, 3.5—5.5 mm, shorter and narrower than or ± equaling perigynia, base curved around perigynia, apex acute to awned. Perigynia appressed-ascending to ascending-spreading, whitish green to pale gold, conspicuously (6—)8—11-veined abaxially, conspicuously or, occasionally, faintly 4—8-veined adaxially, veins more than 2/3 achene length, at least 3 adaxial veins longer than achene, ovate, plano-convex, (3.5—)4—5.2 × 1.5—1.8 mm, 0.6—0.8 mm thick, margin flat, including wing 0.15—0.3(—0.4) mm wide, usually curved toward adaxial surface of perigynia, ciliate-serrulate at least distally; beak green, gold, or white at tip, flat, ± ciliate-serrulate, abaxial suture inconspicuous, distance from beak tip to achene (1.8—)2—3 mm. Achenes ovate, elliptic, oblong or obovate, 1.8—2 × 1.1—1.3 mm, 0.6—0.7 mm thick.

Fruiting mid—late summer. Meadows, open forests, moist to dry soils; 1200—2100 m; Calif.

Carex amplectens has characters of C. specifica and of C. fracta. It has been collected rarely across a few, scattered localities in the Cascade Mountains and the Sierra Nevada and is poorly understood.

Updated: 2019-09-15 14:48:59 gmt
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