Cyperaceae taxon details
Carex oxylepis Torr. & Hook.
1676676 (urn:lsid:marinespecies.org:taxname:1676676)
accepted
Species
Carex oxylepis f. glabra Kük. · unaccepted
- Variety Carex oxylepis var. oxylepis
- Variety Carex oxylepis var. pubescens J.K.Underw.
- Forma Carex oxylepis f. glabra Kük. accepted as Carex oxylepis Torr. & Hook.
- Forma Carex oxylepis f. glabra Boeckeler accepted as Carex oxylepis var. oxylepis
terrestrial
Torrey, J. (1836). Monograph of North America Cyperaceae. <em>Annals of the Lyceum of Natural History of New York.</em> 3: 239-448., available online at https://www.biodiversitylibrary.org/page/16077440#page/7/mode/1up
page(s): 409 [details]
page(s): 409 [details]
Description Plants densely cespitose. Culms dark maroon at base; flowering stems 25–80 cm, usually longer than leaves at maturity,...
Description Plants densely cespitose. Culms dark maroon at base; flowering stems 25–80 cm, usually longer than leaves at maturity, 1–2 mm thick, glabous to pubescent. Leaves: basal sheaths maroon, bladeless, pubescent, sometimes glabrous, others grading from maroon to green on back, light brown-hyaline on front, dotted or streaked with dark red, pubescent distally; blades flat, 3–7 mm wide, pilose, especially abaxially, sparsely so distally, margins ciliate. Inflorescences: peduncles of lateral spikes slender, 5–20 mm, shorter than spikes, pubescent; peduncle of terminal spikes 5–40 mm, minutely scabrous; proximal bracts nearly equaling but usually not exceeding inflorescences; sheaths 15–25 mm; blades 1.5–3 mm wide. Lateral spikes 2–4, 1 per node, distal 2 usually overlapping terminal spike, others well separated, nodding or drooping at maturity, pistillate with 20–45 perigynia attached 1.5 mm apart, narrowly cylindric, 15–45 × 3–4.5 mm. Terminal spike gynecandrous, 15–45 × 2–4.5 mm. Pistillate scales hyaline with broad green, red dotted midrib, elliptic-ovate, shorter than mature perigynia, apex acute to aristate or awned, awn less than 1 mm, ciliate. Perigynia green to dark olive-green, copiously red dotted, 2-ribbed with 6–10 almost equally prominent veins, loosely enveloping achenes, ellipsoid-ovoid, 3.5–5 × 1.7–2 mm, membranous, base acute or with short stipe, apex gradually tapered to beak, glabrous or less often pubescent; beak minutely bidentate, 0.4–0.7 mm. Achenes distinctly stipitate, 1.7–2.5 × 1–1.5 mm, stipe to 0.7 mm. [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Carex oxylepis Torr. & Hook.. Accessed at: https://www.cyperaceae.org/aphia.php?p=taxdetails&id=1676676 on 2026-06-05
Date
action
by
2024-12-10 11:47:54Z
unchecked
db_admin
The webpage text is licensed under a Creative Commons
Attribution 4.0 License
Nomenclature
original description
Torrey, J. (1836). Monograph of North America Cyperaceae. <em>Annals of the Lyceum of Natural History of New York.</em> 3: 239-448., available online at https://www.biodiversitylibrary.org/page/16077440#page/7/mode/1up
page(s): 409 [details]
page(s): 409 [details]
Other
additional source
Ball, P.W.; Reznicek, A.A.; Murray, D.F. (2002). Magnoliophyta: Commelinidae (in part): Cyperaceae. In: Flora of North America. Vol. 23. Oxford University Press, New York., available online at http://floranorthamerica.org/Cyperaceae [details] Available for editors 
[request]
additional source Kükenthal, G. (1909). Cyperaceae-Caricoidae. <em>Das Pflanzenreich: regni vegetabilis conspectus.</em> 38, 4(20)., available online at https://www.biodiversitylibrary.org/page/31618144
page(s): 587 [details]
[request]additional source Kükenthal, G. (1909). Cyperaceae-Caricoidae. <em>Das Pflanzenreich: regni vegetabilis conspectus.</em> 38, 4(20)., available online at https://www.biodiversitylibrary.org/page/31618144
page(s): 587 [details]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Additional information Plants with glabrous leaves and sheaths are occasionally found and have been treated as Carex oxylepis forma glabra Kükenthal; plants with perigynia pubescent, in addition to normally pilose leaves and sheaths, have been treated as C. oxylepis var. pubescens. Taxonomic recognition is not warranted in either case because the traits vary within populations and are not correlated with other structural differences. [details]Description Plants densely cespitose. Culms dark maroon at base; flowering stems 25–80 cm, usually longer than leaves at maturity, 1–2 mm thick, glabous to pubescent. Leaves: basal sheaths maroon, bladeless, pubescent, sometimes glabrous, others grading from maroon to green on back, light brown-hyaline on front, dotted or streaked with dark red, pubescent distally; blades flat, 3–7 mm wide, pilose, especially abaxially, sparsely so distally, margins ciliate. Inflorescences: peduncles of lateral spikes slender, 5–20 mm, shorter than spikes, pubescent; peduncle of terminal spikes 5–40 mm, minutely scabrous; proximal bracts nearly equaling but usually not exceeding inflorescences; sheaths 15–25 mm; blades 1.5–3 mm wide. Lateral spikes 2–4, 1 per node, distal 2 usually overlapping terminal spike, others well separated, nodding or drooping at maturity, pistillate with 20–45 perigynia attached 1.5 mm apart, narrowly cylindric, 15–45 × 3–4.5 mm. Terminal spike gynecandrous, 15–45 × 2–4.5 mm. Pistillate scales hyaline with broad green, red dotted midrib, elliptic-ovate, shorter than mature perigynia, apex acute to aristate or awned, awn less than 1 mm, ciliate. Perigynia green to dark olive-green, copiously red dotted, 2-ribbed with 6–10 almost equally prominent veins, loosely enveloping achenes, ellipsoid-ovoid, 3.5–5 × 1.7–2 mm, membranous, base acute or with short stipe, apex gradually tapered to beak, glabrous or less often pubescent; beak minutely bidentate, 0.4–0.7 mm. Achenes distinctly stipitate, 1.7–2.5 × 1–1.5 mm, stipe to 0.7 mm. [details]
Ecology Fruiting late spring–early summer. Floodplain forests, rich, moist deciduous forests, near streams or in swampy areas, upland forests on sandy soils, wooded bluffs, often associated with calcareous soils. [details]
To Biodiversity Heritage Library (58 publications)
To European Nucleotide Archive, ENA (Carex oxylepis)
To GenBank (2 nucleotides; 0 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Carex oxylepis f. glabra Kük.)
To New York Botanical Garden Steere Herbarium (Carex_oxylepis_NY1477564_type_1)
To New York Botanical Garden Steere Herbarium (Carex_oxylepis_NY1477566_holotype_1)
To Plants of the World Online
To Royal Botanic Gardens, Kew (Carex oxylepis K000907941 isotype 1)
To Royal Botanic Gardens, Kew (Carex oxylepis K000907942 type 1)
To Royal Botanic Gardens, Kew (Carex oxylepis K000907944 type 1)
To Royal Botanic Gardens, Kew (Carex oxylepis K000907945 isotype 1)
To The Plant List (from synonym Carex oxylepis f. glabra Kük.)
To European Nucleotide Archive, ENA (Carex oxylepis)
To GenBank (2 nucleotides; 0 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Carex oxylepis f. glabra Kük.)
To New York Botanical Garden Steere Herbarium (Carex_oxylepis_NY1477564_type_1)
To New York Botanical Garden Steere Herbarium (Carex_oxylepis_NY1477566_holotype_1)
To Plants of the World Online
To Royal Botanic Gardens, Kew (Carex oxylepis K000907941 isotype 1)
To Royal Botanic Gardens, Kew (Carex oxylepis K000907942 type 1)
To Royal Botanic Gardens, Kew (Carex oxylepis K000907944 type 1)
To Royal Botanic Gardens, Kew (Carex oxylepis K000907945 isotype 1)
To The Plant List (from synonym Carex oxylepis f. glabra Kük.)
From editor or global species database
Hosted externally
Hosted externally
Hosted externally
Hosted externally
Hosted externally
Hosted externally
