Cyperaceae taxon details
Rhynchospora inexpansa (Michx.) Vahl
1679632 (urn:lsid:marinespecies.org:taxname:1679632)
accepted
Species
Phaeocephalum inexpansum (Michx.) House · unaccepted
Schoenus inexpansus Michx. · unaccepted
terrestrial
(of Schoenus inexpansus Michx.) Michaux, A. (1803). Cyperaceae. <em>Flora Boreali-Americana.</em> 1., available online at https://www.biodiversitylibrary.org/page/404794#page/3/mode/1up
page(s): 35 [details]
page(s): 35 [details]
Description Plants perennial, cespitose, 30–120 cm; rhizomes absent. Culms arching, leafy, droopingtipped, ± terete, ribbed,...
Taxonomic remark Source in seed data: wcs Updated scientificnameAuthorship from (Michx.) Vahl to Vahl, information provided by Alan E. on...
Description Plants perennial, cespitose, 30–120 cm; rhizomes absent. Culms arching, leafy, droopingtipped, ± terete, ribbed, slender. Principal leaves exceeded by culm; blades spreading to ascending, narrowly linear, proximally flat, 2–3.5 mm wide, apex trigonous, tapering. Inflorescences: clusters of spikelets 3–6, progressively wider-spaced proximally, narrow, elongate; leafy bracts slender, mostly exceeding clusters. Spikelets redbrown, lanceoloid, 5–7 mm, apex acuminate; fertile scales narrowly ovate, 4–5 mm, apex acuminate, midrib included or shortexcurrent. Flowers: perianth bristles 6, exceeding tubercle, antrorsely barbellate. Fruits (1–)2–3(–4) per spikelet, 3–3.2 mm; body brown, narrowly oblong-ellipsoid, flattened, 2 × 0.8–1 mm; surface strongly transversely wavyrugose, vertically finely striate between ridges; tubercle compressed, narrowly triangular-subulate, 1 mm. [details]
Taxonomic remark Source in seed data: wcs Updated scientificnameAuthorship from (Michx.) Vahl to Vahl, information provided by Alan E. on...
Taxonomic remark Source in seed data: wcs Updated scientificnameAuthorship from (Michx.) Vahl to Vahl, information provided by Alan E. on email Oct. 12 2020 More details could be found in The Plant List v.1.1. [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Rhynchospora inexpansa (Michx.) Vahl. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1679632 on 2025-09-13
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2024-12-10 11:47:54Z
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Nomenclature
original description
(of Schoenus inexpansus Michx.) Michaux, A. (1803). Cyperaceae. <em>Flora Boreali-Americana.</em> 1., available online at https://www.biodiversitylibrary.org/page/404794#page/3/mode/1up
page(s): 35 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
new combination reference Vahl, M. (1805). Enumeratio plantarum, vel ab alium vel ab ipso observatum, cum earum differentiis specificis, synonymis selectis et descriptionibus succinctis. vol. II, pp. 1-423., available online at https://www.biodiversitylibrary.org/page/7352986#page/9/mode/1up
page(s): 232 [details]
page(s): 35 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
new combination reference Vahl, M. (1805). Enumeratio plantarum, vel ab alium vel ab ipso observatum, cum earum differentiis specificis, synonymis selectis et descriptionibus succinctis. vol. II, pp. 1-423., available online at https://www.biodiversitylibrary.org/page/7352986#page/9/mode/1up
page(s): 232 [details]
Present Inaccurate Introduced: alien Containing type locality
Syntype (of Schoenus inexpansus Michx.) P 00267346, geounit United States [details]
From editor or global species database
Description Plants perennial, cespitose, 30–120 cm; rhizomes absent. Culms arching, leafy, droopingtipped, ± terete, ribbed, slender. Principal leaves exceeded by culm; blades spreading to ascending, narrowly linear, proximally flat, 2–3.5 mm wide, apex trigonous, tapering. Inflorescences: clusters of spikelets 3–6, progressively wider-spaced proximally, narrow, elongate; leafy bracts slender, mostly exceeding clusters. Spikelets redbrown, lanceoloid, 5–7 mm, apex acuminate; fertile scales narrowly ovate, 4–5 mm, apex acuminate, midrib included or shortexcurrent. Flowers: perianth bristles 6, exceeding tubercle, antrorsely barbellate. Fruits (1–)2–3(–4) per spikelet, 3–3.2 mm; body brown, narrowly oblong-ellipsoid, flattened, 2 × 0.8–1 mm; surface strongly transversely wavyrugose, vertically finely striate between ridges; tubercle compressed, narrowly triangular-subulate, 1 mm. [details]Taxonomic remark Source in seed data: wcs Updated scientificnameAuthorship from (Michx.) Vahl to Vahl, information provided by Alan E. on email Oct. 12 2020 More details could be found in The Plant List v.1.1. [details]
To Biodiversity Heritage Library (2 publications) (from synonym Phaeocephalum inexpansum (Michx.) House)
To Biodiversity Heritage Library (25 publications) (from synonym Schoenus inexpansus Michx.)
To Biodiversity Heritage Library (82 publications)
To European Nucleotide Archive, ENA (Rhynchospora inexpansa)
To International Plant Names Index (IPNI) (from synonym Phaeocephalum inexpansum (Michx.) House)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Schoenus inexpansus Michx.)
To Plants of the World Online
To Plants of the World Online (from synonym Phaeocephalum inexpansum (Michx.) House)
To Plants of the World Online (from synonym Schoenus inexpansus Michx.)
To Biodiversity Heritage Library (25 publications) (from synonym Schoenus inexpansus Michx.)
To Biodiversity Heritage Library (82 publications)
To European Nucleotide Archive, ENA (Rhynchospora inexpansa)
To International Plant Names Index (IPNI) (from synonym Phaeocephalum inexpansum (Michx.) House)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Schoenus inexpansus Michx.)
To Plants of the World Online
To Plants of the World Online (from synonym Phaeocephalum inexpansum (Michx.) House)
To Plants of the World Online (from synonym Schoenus inexpansus Michx.)
