Cyperaceae taxon details
Scleria laxa R.Br.
1681724 (urn:lsid:marinespecies.org:taxname:1681724)
accepted
Species
Scleria filipendula S.T.Blake · unaccepted
Scleria laxa var. pseudotesselata Domin · unaccepted
Scleria trisulcata G.P.Li · unaccepted
- Variety Scleria laxa var. pseudotesselata Domin accepted as Scleria laxa R.Br.
- Variety Scleria laxa var. laxa R.Br. (uncertain > unassessed)
terrestrial
Not documented
Description Annuals. Roots fibrous. Rhizomes short or not well developed, thick. Culms tufted, 20-40 cm tall, slender, 3-angled,...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Prodr. Fl. Nov. Holl. 240 1810 to Prodr. Fl. Nov. Holland. : 240...
Description Annuals. Roots fibrous. Rhizomes short or not well developed, thick. Culms tufted, 20-40 cm tall, slender, 3-angled, smooth, glabrous, apically often nodding. Leaves cauline; sheaths at culm base glabrous, barely winged, bladeless or with a short blade; sheaths at middle and apical part of culm narrowly winged, villous and more densely so near contraligules; contraligule semicircular, apex obtuse; leaf blade linear, 3.5-5.5 mm wide but apically attenuate, papery, both surfaces hairy or only on 2 lateral veins of abaxial surface, margins scabrous, apex slightly obtuse to acute. Involucral bracts leaflike, sheathing, opening of sheath with dense brown pubescence; bractlets setaceous, as long as or slightly longer than spikelet. Inflorescences paniculate, with 2-4 branches; branches 1.2-3 cm, distant, with few spikelets. Spikelets narrowly ovoid, 4-5 mm, mostly unisexual; female spikelets with 4 or 5 glumes and 1 female flower; male spikelets with 7-9 or more glumes. Glumes deeply straw-colored to brownish purplish, ovate to lanceolate, keeled, apex acute and apiculate. Male flowers: stamens 2 or 3. Female flowers: ovary subspherical, glabrous. Disk yellowish white, 1/4-1/3 height of nutlet, slightly 3-lobed; lobes ovoid-triangular to subglobose, margin reflexed, apex truncate. Nutlet subspherical to obovoid-spherical, 2.8-3 × 1.8-2 mm, trisulcate, pitted with irregular longitudinally elongate lacunae (i.e., trabeculate), glabrous, apex with a yellowish white tip. Fl. and fr. Aug-Oct. [details]
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Prodr. Fl. Nov. Holl. 240 1810 to Prodr. Fl. Nov. Holland. : 240...
Taxonomic remark Source in seed data: wcs Update namepublishedIn from Prodr. Fl. Nov. Holl. 240 1810 to Prodr. Fl. Nov. Holland. : 240 (1810), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Scleria laxa R.Br.. Accessed at: https://www.cyperaceae.org/aphia.php?p=taxdetails&id=1681724 on 2025-09-11
The webpage text is licensed under a Creative Commons
Attribution 4.0 License
Nomenclature
basis of record
Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
Other
additional source
Li, B. Z.; Zhang, S. R. (2024). An updated species checklist and taxonomic synopsis of Cyperaceae in China. <em>Biodiversity Science.</em> 32(7): 24106., available online at https://doi.org/10.17520/biods.2024106 [details] Available for editors 
[request]
[request]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Description Annuals. Roots fibrous. Rhizomes short or not well developed, thick. Culms tufted, 20-40 cm tall, slender, 3-angled, smooth, glabrous, apically often nodding. Leaves cauline; sheaths at culm base glabrous, barely winged, bladeless or with a short blade; sheaths at middle and apical part of culm narrowly winged, villous and more densely so near contraligules; contraligule semicircular, apex obtuse; leaf blade linear, 3.5-5.5 mm wide but apically attenuate, papery, both surfaces hairy or only on 2 lateral veins of abaxial surface, margins scabrous, apex slightly obtuse to acute. Involucral bracts leaflike, sheathing, opening of sheath with dense brown pubescence; bractlets setaceous, as long as or slightly longer than spikelet. Inflorescences paniculate, with 2-4 branches; branches 1.2-3 cm, distant, with few spikelets. Spikelets narrowly ovoid, 4-5 mm, mostly unisexual; female spikelets with 4 or 5 glumes and 1 female flower; male spikelets with 7-9 or more glumes. Glumes deeply straw-colored to brownish purplish, ovate to lanceolate, keeled, apex acute and apiculate. Male flowers: stamens 2 or 3. Female flowers: ovary subspherical, glabrous. Disk yellowish white, 1/4-1/3 height of nutlet, slightly 3-lobed; lobes ovoid-triangular to subglobose, margin reflexed, apex truncate. Nutlet subspherical to obovoid-spherical, 2.8-3 × 1.8-2 mm, trisulcate, pitted with irregular longitudinally elongate lacunae (i.e., trabeculate), glabrous, apex with a yellowish white tip. Fl. and fr. Aug-Oct. [details]Taxonomic remark Source in seed data: wcs Update namepublishedIn from Prodr. Fl. Nov. Holl. 240 1810 to Prodr. Fl. Nov. Holland. : 240 (1810), information provided by Alan E. on email Jun. 07 2021 More details could be found in [details]
To Biodiversity Heritage Library (2 publications) (from synonym Scleria filipendula S.T.Blake)
To Biodiversity Heritage Library (77 publications)
To European Nucleotide Archive, ENA (Scleria laxa)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Scleria trisulcata G.P.Li)
To International Plant Names Index (IPNI) (from synonym Scleria filipendula S.T.Blake)
To International Plant Names Index (IPNI) (from synonym Scleria laxa var. pseudotesselata Domin)
To IUCN Red List (Least Concern)
To Plants of the World Online
To Plants of the World Online (from synonym Scleria filipendula S.T.Blake)
To Plants of the World Online (from synonym Scleria trisulcata G.P.Li)
To Plants of the World Online (from synonym Scleria laxa var. pseudotesselata Domin)
To the Natural History Museum, London (Scleria laxa R.Br. BM000833640 type 1)
To Biodiversity Heritage Library (77 publications)
To European Nucleotide Archive, ENA (Scleria laxa)
To International Plant Names Index (IPNI)
To International Plant Names Index (IPNI) (from synonym Scleria trisulcata G.P.Li)
To International Plant Names Index (IPNI) (from synonym Scleria filipendula S.T.Blake)
To International Plant Names Index (IPNI) (from synonym Scleria laxa var. pseudotesselata Domin)
To IUCN Red List (Least Concern)
To Plants of the World Online
To Plants of the World Online (from synonym Scleria filipendula S.T.Blake)
To Plants of the World Online (from synonym Scleria trisulcata G.P.Li)
To Plants of the World Online (from synonym Scleria laxa var. pseudotesselata Domin)
To the Natural History Museum, London (Scleria laxa R.Br. BM000833640 type 1)
From editor or global species database
Hosted externally
