Cyperaceae taxon details
Carex hormathodes Fernald
1676425 (urn:lsid:marinespecies.org:taxname:1676425)
accepted
Species
Carex hormathodes f. hormathodes Fernald · unaccepted
Carex hormathodes f. invisa (W.Boott) Fernald · unaccepted
Carex hormathodes var. invisa (W.Boott) Fernald · unaccepted
Carex straminea f. indivisa (W.Boott) Britton · unaccepted
Carex straminea f. invisa (W.Boott) Kük. · unaccepted
Carex straminea var. aperta Boott · unaccepted
Carex straminea var. indivisa W.Boott · unaccepted
Carex straminea var. invisa W.Boott · unaccepted
Carex tenera var. invisa (W.Boott) Britton · unaccepted
- Forma Carex hormathodes f. hormathodes Fernald accepted as Carex hormathodes Fernald
- Forma Carex hormathodes f. invisa (W.Boott) Fernald accepted as Carex hormathodes Fernald
- Variety Carex hormathodes var. invisa (W.Boott) Fernald accepted as Carex hormathodes Fernald
- Variety Carex hormathodes var. richii (Fernald) Fernald accepted as Carex straminea Willd. ex Schkuhr
terrestrial
Fernald, M. L. (1906). Some new or little known Cyperaceae of Eastern North America. Rhodora , 8(92): 161-167.
page(s): 165 [details]
page(s): 165 [details]
Lectotype GH 00069654, geounit United States
Lectotype GH 00069654, geounit United States [details]
Description Plants densely cespitose. Culms 20–80 cm. Leaves: sheaths adaxially conspicuously green-veined nearly to collar, narrow...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Rhodora 8: 165 1906 to Rhodora 8: 165 (1906), information provided by...
Description Plants densely cespitose. Culms 20–80 cm. Leaves: sheaths adaxially conspicuously green-veined nearly to collar, narrow hyaline band or sharp Y-shaped region at collar; summits U-shaped; distal ligules 2–4 mm; blades 3–5 per fertile culm, 14–25 cm × 1–3 mm. Inflorescences usually nodding, ± open, yellow-brown or reddish brown, 2.5–6 cm × 5–16 mm; proximal internode (2–)5–16 mm; 2d internode 5–17 mm; proximal bracts bristlelike. Spikes 3–9, distant, distinct, ellipsoid, 6–15 × 4–8 mm, base acute, apex obtuse; lateral spikes with staminate portion 2 mm or less at base. Pistillate scales reddish brown, often with green or pale midstripe, lanceolate, 3.5–4.9 mm, shorter and much narrower than perigynia, margin reddish brown, apex firm, acuminate or awned. Perigynia spreading, reddish brown, conspicuously 5-veined or more on each face, lance-ovate to weakly obovate, flat except over achene, 3.8–5.6 × 1.9–2.8 mm, 0.4–0.5 mm thick, base rounded, margin flat, including wing 0.4–0.7 mm wide; beak ascending, reddish brown at tip, flat, 1/2 length of body, ciliate-serrulate, abaxial suture with brown or reddish brown-hyaline margin, distance from beak tip to achene 2–3 mm. Achenes elliptic, 1.5–1.8 × 0.9–1.1 mm, 0.3–0.4 mm thick. 2n = 74.
[details]
[details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Rhodora 8: 165 1906 to Rhodora 8: 165 (1906), information provided by...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Rhodora 8: 165 1906 to Rhodora 8: 165 (1906), information provided by Alan E. on email Jun. 07 2021 More details could be found in The Pla [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Carex hormathodes Fernald. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1676425 on 2025-09-12
Date
action
by
2024-12-10 11:47:54Z
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db_admin
The webpage text is licensed under a Creative Commons
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Nomenclature
original description
Fernald, M. L. (1906). Some new or little known Cyperaceae of Eastern North America. Rhodora , 8(92): 161-167.
page(s): 165 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
page(s): 165 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
Present Inaccurate Introduced: alien Containing type locality
Lectotype GH 00069654, geounit United States [details]
From editor or global species database
Description Plants densely cespitose. Culms 20–80 cm. Leaves: sheaths adaxially conspicuously green-veined nearly to collar, narrow hyaline band or sharp Y-shaped region at collar; summits U-shaped; distal ligules 2–4 mm; blades 3–5 per fertile culm, 14–25 cm × 1–3 mm. Inflorescences usually nodding, ± open, yellow-brown or reddish brown, 2.5–6 cm × 5–16 mm; proximal internode (2–)5–16 mm; 2d internode 5–17 mm; proximal bracts bristlelike. Spikes 3–9, distant, distinct, ellipsoid, 6–15 × 4–8 mm, base acute, apex obtuse; lateral spikes with staminate portion 2 mm or less at base. Pistillate scales reddish brown, often with green or pale midstripe, lanceolate, 3.5–4.9 mm, shorter and much narrower than perigynia, margin reddish brown, apex firm, acuminate or awned. Perigynia spreading, reddish brown, conspicuously 5-veined or more on each face, lance-ovate to weakly obovate, flat except over achene, 3.8–5.6 × 1.9–2.8 mm, 0.4–0.5 mm thick, base rounded, margin flat, including wing 0.4–0.7 mm wide; beak ascending, reddish brown at tip, flat, 1/2 length of body, ciliate-serrulate, abaxial suture with brown or reddish brown-hyaline margin, distance from beak tip to achene 2–3 mm. Achenes elliptic, 1.5–1.8 × 0.9–1.1 mm, 0.3–0.4 mm thick. 2n = 74.[details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Rhodora 8: 165 1906 to Rhodora 8: 165 (1906), information provided by Alan E. on email Jun. 07 2021 More details could be found in The Pla [details]
To Biodiversity Heritage Library (1 publication) (from synonym Carex straminea var. aperta Boott)
To Biodiversity Heritage Library (10 publications) (from synonym Carex straminea var. invisa W.Boott)
To Biodiversity Heritage Library (2 publications) (from synonym Carex tenera var. invisa (W.Boott) Britton)
To Biodiversity Heritage Library (66 publications)
To European Nucleotide Archive, ENA (Carex hormathodes)
To GenBank (12 nucleotides; 3 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Carex hormathodes var. invisa (W.Boott) Fernald)
To International Plant Names Index (IPNI) (from synonym Carex straminea var. aperta Boott)
To International Plant Names Index (IPNI) (from synonym Carex tenera var. invisa (W.Boott) Britton)
To International Plant Names Index (IPNI) (from synonym Carex straminea f. invisa (W.Boott) Kük.)
To International Plant Names Index (IPNI) (from synonym Carex straminea var. invisa W.Boott)
To International Plant Names Index (IPNI) (from synonym Carex hormathodes f. invisa (W.Boott) Fernald)
To Plants of the World Online (from synonym Carex straminea f. indivisa (W.Boott) Britton)
To Plants of the World Online (from synonym Carex hormathodes f. invisa (W.Boott) Fernald)
To Plants of the World Online (from synonym Carex tenera var. invisa (W.Boott) Britton)
To Plants of the World Online
To Plants of the World Online (from synonym Carex straminea var. aperta Boott)
To Plants of the World Online (from synonym Carex straminea var. indivisa W.Boott)
To Plants of the World Online (from synonym Carex hormathodes var. invisa (W.Boott) Fernald)
To The Plant List (from synonym Carex straminea var. invisa W.Boott)
To The Plant List (from synonym Carex straminea f. invisa (W.Boott) Kük.)
To The Plant List (from synonym Carex hormathodes f. hormathodes Fernald)
To Biodiversity Heritage Library (10 publications) (from synonym Carex straminea var. invisa W.Boott)
To Biodiversity Heritage Library (2 publications) (from synonym Carex tenera var. invisa (W.Boott) Britton)
To Biodiversity Heritage Library (66 publications)
To European Nucleotide Archive, ENA (Carex hormathodes)
To GenBank (12 nucleotides; 3 proteins)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Carex hormathodes var. invisa (W.Boott) Fernald)
To International Plant Names Index (IPNI) (from synonym Carex straminea var. aperta Boott)
To International Plant Names Index (IPNI) (from synonym Carex tenera var. invisa (W.Boott) Britton)
To International Plant Names Index (IPNI) (from synonym Carex straminea f. invisa (W.Boott) Kük.)
To International Plant Names Index (IPNI) (from synonym Carex straminea var. invisa W.Boott)
To International Plant Names Index (IPNI) (from synonym Carex hormathodes f. invisa (W.Boott) Fernald)
To Plants of the World Online (from synonym Carex straminea f. indivisa (W.Boott) Britton)
To Plants of the World Online (from synonym Carex hormathodes f. invisa (W.Boott) Fernald)
To Plants of the World Online (from synonym Carex tenera var. invisa (W.Boott) Britton)
To Plants of the World Online
To Plants of the World Online (from synonym Carex straminea var. aperta Boott)
To Plants of the World Online (from synonym Carex straminea var. indivisa W.Boott)
To Plants of the World Online (from synonym Carex hormathodes var. invisa (W.Boott) Fernald)
To The Plant List (from synonym Carex straminea var. invisa W.Boott)
To The Plant List (from synonym Carex straminea f. invisa (W.Boott) Kük.)
To The Plant List (from synonym Carex hormathodes f. hormathodes Fernald)
