Difference between revisions of "Carex oronensis"
Proc. Amer. Acad. Arts 37: 471, plate 1, figs. 15, 16. 1902.
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|common_names=Orono sedge | |common_names=Orono sedge | ||
| + | |special_status={{Treatment/ID/Special_status | ||
| + | |code=F | ||
| + | |label=Illustrated | ||
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| + | |code=E | ||
| + | |label=Endemic | ||
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| + | |code=C | ||
| + | |label=Conservation concern | ||
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name=Carex oronensis | name=Carex oronensis | ||
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|authority=Fernald | |authority=Fernald | ||
|rank=species | |rank=species | ||
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|publication title=Proc. Amer. Acad. Arts | |publication title=Proc. Amer. Acad. Arts | ||
|publication year=1902 | |publication year=1902 | ||
| − | |special status= | + | |special status=Illustrated;Endemic;Conservation concern |
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V23/V23_614.xml |
|genus=Carex | |genus=Carex | ||
|section=Carex sect. Ovales | |section=Carex sect. Ovales | ||
Latest revision as of 20:42, 5 November 2020
Plants loosely cespitose. Culms 30–100 cm. Leaves: sheaths papillose, summits U-shaped; distal ligules 2.1–4.6 mm; blades 3–4 per fertile culm, 18–23 cm × 2–4 mm. Inflorescences stiffly erect, open, coppery brown, 1.5–3.4 cm × 6–15 mm; proximal internode (1–)3–6(–9) mm; 2d internode 1–4 mm; proximal bracts usually scalelike, occasionally bristlelike. Spikes (3–)5–6(–10), distant, individually distinct, rhomboid-ovoid, 5–10 × 3–7 mm, base and apex tapered. Pistillate scales mid to dark brown, usually with pale midstripe, glossy, lanceolate, (3–)3.5–3.7(–4) mm, subequal to perigynia in length and width, margin white-hyaline, to 0.15 mm wide, apex acute. Perigynia ascending, light green to straw colored, pearlescent, often with adaxial reddish brown blotch, conspicuously 7–15-veined abaxially, usually inconspicuously or conspicuously (6–) 9–12-veined adaxially, lanceolate, plano-convex, 2.9–4.3 × 0.9–1.4 mm, 0.6 mm thick, margin flat, including wing 0.07–0.4 mm wide, unwinged below median; beak brown, white-hyaline at tip, flat, ciliate-serrulate, abaxial suture conspicuous, often with narrow white-hyaline margin, distance from beak tip to achene 1.5–2.4 mm. Achenes ovate, 1.3–1.6 × 0.7-1.4 mm, 0.3–0.5 mm thick. 2n = 74.
Phenology: Fruiting summer (late Jun–mid Jul).
Habitat: Hay fields, forest edges, open woods
Elevation: 30–400 m
Discussion
Of conservation concern.
Carex oronensis is in the Center for Plant Conservation’s National Collection of Endangered Plants.