Cyperaceae taxon details
Carex castanea Wahlenb.
1678248 (urn:lsid:marinespecies.org:taxname:1678248)
accepted
Species
Carex blepharophora A.Gray · unaccepted
Carex flexilis Rudge · unaccepted
Loxotrema castanea (Wahlenb.) Raf. · unaccepted
- Variety Carex castanea var. knieskernii (Dewey) Mack. accepted as Carex ×knieskernii Dewey
terrestrial
Wahlenberg, G. (1803). Inledning til Caricographien. <em>Kongl. Vetenskaps Academiens Nya Handlingar.</em> 24: 138-170., available online at https://www.biodiversitylibrary.org/page/46986891
page(s): 155 [details]
page(s): 155 [details]
Description Plants with short rhizomes, loosely cespitose. Culms dark maroon at base; flowering stems 40–90 cm, much longer than...
Description Plants with short rhizomes, loosely cespitose. Culms dark maroon at base; flowering stems 40–90 cm, much longer than leaves at maturity, 0.5–1 mm thick, sparingly pilose. Leaves: basal sheaths maroon, bladeless, pilose; others grading from maroon to green on back, pale to chestnut brown-hyaline and usually red dotted on front, ciliate at apex; blades flat, 2.5–9 mm wide, pilose on both surfaces, sparsely so adaxially, margins smooth or ciliate. Inflorescences: peduncles of lateral spikes capillary, 10–20 mm, glabrous or pubescent; peduncle of terminal spike erect, 3–5 mm; proximal bracts hyaline, reduced to green awn or less often leaflike and 0.3–1.5 mm wide; sheaths usually less than 3 mm (to 10 mm). Lateral spikes 2–4, 1 per node, mostly near apex but not crowded, drooping at maturity, pistillate with 10–40 perigynia attached 1 mm apart, narrowly cylindric, 8–25 × 4–5 mm. Terminal spike staminate, sessile or pedunculate, 10–30 × 1.4–3 (4) mm. Pistillate scales hyaline suffused with chestnut with broad green midrib, ovate, shorter to nearly as long as mature perigynia, apex acute to cuspidate, awns less than 1 mm, often ciliate distally. Perigynia light green, usually red dotted, 2-ribbed and 5–7-veined, at least proximally and abaxially, loosely enveloping achene, ellipsoid, 2.5–5 × 1.3–2.5 mm, membranous, base acute, apex tapering to beak, glabrous; beak bidentate to 1.5 mm, teeth 0.5 mm, ciliate between apical teeth. Achenes substipitate, 1.5–2 × 1–1.5 mm. 2n = 44, 64. [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Carex castanea Wahlenb.. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1678248 on 2026-06-05
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2024-12-10 11:47:54Z
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Nomenclature
original description
Wahlenberg, G. (1803). Inledning til Caricographien. <em>Kongl. Vetenskaps Academiens Nya Handlingar.</em> 24: 138-170., available online at https://www.biodiversitylibrary.org/page/46986891
page(s): 155 [details]
page(s): 155 [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]
[request]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Additional information Fruiting late spring–mid summer. Cedar swamps, rich mesic deciduous or mixed conifer-hardwood forests, mixed coniferous forests and margins, mesic meadows, often associated with calcareous soils. [details]Description Plants with short rhizomes, loosely cespitose. Culms dark maroon at base; flowering stems 40–90 cm, much longer than leaves at maturity, 0.5–1 mm thick, sparingly pilose. Leaves: basal sheaths maroon, bladeless, pilose; others grading from maroon to green on back, pale to chestnut brown-hyaline and usually red dotted on front, ciliate at apex; blades flat, 2.5–9 mm wide, pilose on both surfaces, sparsely so adaxially, margins smooth or ciliate. Inflorescences: peduncles of lateral spikes capillary, 10–20 mm, glabrous or pubescent; peduncle of terminal spike erect, 3–5 mm; proximal bracts hyaline, reduced to green awn or less often leaflike and 0.3–1.5 mm wide; sheaths usually less than 3 mm (to 10 mm). Lateral spikes 2–4, 1 per node, mostly near apex but not crowded, drooping at maturity, pistillate with 10–40 perigynia attached 1 mm apart, narrowly cylindric, 8–25 × 4–5 mm. Terminal spike staminate, sessile or pedunculate, 10–30 × 1.4–3 (4) mm. Pistillate scales hyaline suffused with chestnut with broad green midrib, ovate, shorter to nearly as long as mature perigynia, apex acute to cuspidate, awns less than 1 mm, often ciliate distally. Perigynia light green, usually red dotted, 2-ribbed and 5–7-veined, at least proximally and abaxially, loosely enveloping achene, ellipsoid, 2.5–5 × 1.3–2.5 mm, membranous, base acute, apex tapering to beak, glabrous; beak bidentate to 1.5 mm, teeth 0.5 mm, ciliate between apical teeth. Achenes substipitate, 1.5–2 × 1–1.5 mm. 2n = 44, 64. [details]
To Biodiversity Heritage Library (1 publication) (from synonym Loxotrema castanea (Wahlenb.) Raf.)
To Biodiversity Heritage Library (109 publications)
To Biodiversity Heritage Library (16 publications) (from synonym Carex blepharophora A.Gray)
To Biodiversity Heritage Library (69 publications) (from synonym Carex flexilis Rudge)
To European Nucleotide Archive, ENA (Carex castanea)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Carex flexilis Rudge)
To International Plant Names Index (IPNI) (from synonym Loxotrema castanea (Wahlenb.) Raf.)
To International Plant Names Index (IPNI) (from synonym Carex blepharophora A.Gray)
To Plants of the World Online (from synonym Carex flexilis Rudge)
To Plants of the World Online
To Plants of the World Online (from synonym Loxotrema castanea (Wahlenb.) Raf.)
To Plants of the World Online (from synonym Carex blepharophora A.Gray)
To the Natural History Museum, London (Carex castanea Wahlenb. BM001042078 type 1)
To the Natural History Museum, London (Carex castanea Wahlenb. BM001042079 type 1)
To Biodiversity Heritage Library (109 publications)
To Biodiversity Heritage Library (16 publications) (from synonym Carex blepharophora A.Gray)
To Biodiversity Heritage Library (69 publications) (from synonym Carex flexilis Rudge)
To European Nucleotide Archive, ENA (Carex castanea)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Carex flexilis Rudge)
To International Plant Names Index (IPNI) (from synonym Loxotrema castanea (Wahlenb.) Raf.)
To International Plant Names Index (IPNI) (from synonym Carex blepharophora A.Gray)
To Plants of the World Online (from synonym Carex flexilis Rudge)
To Plants of the World Online
To Plants of the World Online (from synonym Loxotrema castanea (Wahlenb.) Raf.)
To Plants of the World Online (from synonym Carex blepharophora A.Gray)
To the Natural History Museum, London (Carex castanea Wahlenb. BM001042078 type 1)
To the Natural History Museum, London (Carex castanea Wahlenb. BM001042079 type 1)
From editor or global species database
Hosted externally
Hosted externally
