Cyperaceae taxon details
Hypolytrum bahiense M.Alves & W.W.Thomas
1678847 (urn:lsid:marinespecies.org:taxname:1678847)
accepted
Species
terrestrial
Not documented
Description Herbs grasslike, 30–70 cm tall, rhizomatous, caespitose, perennial; rhizome densely branching, 2–3 mm diam.; pseudoculm...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Brittonia 54: 126 2002 to Brittonia 54: 126 (2002), information...
Description Herbs grasslike, 30–70 cm tall, rhizomatous, caespitose, perennial; rhizome densely branching, 2–3 mm diam.; pseudoculm trigonous; cataphylls brown to deep wine, chartaceous. Leaves basal; leaf blades linear, 30–64 × 0.3–0.4 cm, brown-green, nonbullate, membranaceous to subcoriaceous, 3-costate, the secondary costae distinct, inverse W-shaped in cross section, margins and midrib scabrous, apex acute; pseudopetiole absent; sheath margins 1–1.2 mm wide, reddish to brownish red, membranaceous. Culm 1 per plant, scapiform, central, 30–62 cm × 0.9–1 mm, trigonous, scabrous on angles; bract subtending the synflorescence foliaceous, linear, 27–32 cm long, surpassing the synflorescence. Synflorescence terminal, paniculiform, cylindrical, lax; main axis 2–4 cm long, branched; nodes 5–6; first internode 0.9–2.9 cm long; second internode 0.4–0.7 cm long; paraclades 3 on basal node, patent; second-order ramification absent; main epipodium 0.7–1.4 cm long, scabrous; prophylls 2-keeled. Spikes in diminutive terminal clusters, sessile, ellipsoid, 5–7 mm long; spicoid bracts 1.2–1.5 mm long, pale brown, apex obtuse, dorsally mucronate, margins membranaceous; floral bracts 2, free, 1.5–1.8 mm long, apex acute, keel wingless, sparsely scabridulous. Staminate flowers 2 per spicoid; anthers obclavate, 0.5–0.8 mm long; filaments 1–2.5 mm long; stigma branches 2; style 0.5–1 mm long. Fructification biconvex, ovoid, 1.5–1.9 × 1–1.2 mm, greenish- and reddish-dotted, wrinkled; apex contracted; base obtuse. [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Brittonia 54: 126 2002 to Brittonia 54: 126 (2002), information...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Brittonia 54: 126 2002 to Brittonia 54: 126 (2002), information provided by Alan E. on email Jun. 07 2021 More details could be found in T [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Hypolytrum bahiense M.Alves & W.W.Thomas. Accessed at: https://www.cyperaceae.org/aphia.php?p=taxdetails&id=1678847 on 2026-09-28
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Nomenclature
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
From editor or global species database
Description Herbs grasslike, 30–70 cm tall, rhizomatous, caespitose, perennial; rhizome densely branching, 2–3 mm diam.; pseudoculm trigonous; cataphylls brown to deep wine, chartaceous. Leaves basal; leaf blades linear, 30–64 × 0.3–0.4 cm, brown-green, nonbullate, membranaceous to subcoriaceous, 3-costate, the secondary costae distinct, inverse W-shaped in cross section, margins and midrib scabrous, apex acute; pseudopetiole absent; sheath margins 1–1.2 mm wide, reddish to brownish red, membranaceous. Culm 1 per plant, scapiform, central, 30–62 cm × 0.9–1 mm, trigonous, scabrous on angles; bract subtending the synflorescence foliaceous, linear, 27–32 cm long, surpassing the synflorescence. Synflorescence terminal, paniculiform, cylindrical, lax; main axis 2–4 cm long, branched; nodes 5–6; first internode 0.9–2.9 cm long; second internode 0.4–0.7 cm long; paraclades 3 on basal node, patent; second-order ramification absent; main epipodium 0.7–1.4 cm long, scabrous; prophylls 2-keeled. Spikes in diminutive terminal clusters, sessile, ellipsoid, 5–7 mm long; spicoid bracts 1.2–1.5 mm long, pale brown, apex obtuse, dorsally mucronate, margins membranaceous; floral bracts 2, free, 1.5–1.8 mm long, apex acute, keel wingless, sparsely scabridulous. Staminate flowers 2 per spicoid; anthers obclavate, 0.5–0.8 mm long; filaments 1–2.5 mm long; stigma branches 2; style 0.5–1 mm long. Fructification biconvex, ovoid, 1.5–1.9 × 1–1.2 mm, greenish- and reddish-dotted, wrinkled; apex contracted; base obtuse. [details]Taxonomic remark Source in seed data: wcs Update namepublishedIn from Brittonia 54: 126 2002 to Brittonia 54: 126 (2002), information provided by Alan E. on email Jun. 07 2021 More details could be found in T [details]
To International Plant Names Index (IPNI)
To Plants of the World Online
To Royal Botanic Gardens, Kew (Hypolytrum bahiense K000584387 isotype 1)
To Plants of the World Online
To Royal Botanic Gardens, Kew (Hypolytrum bahiense K000584387 isotype 1)
From editor or global species database
Hosted externally
