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Cyperaceae taxon details

Anthelepis undulata (Thwaites) R.L.Barrett, K.L.Wilson & J.J.Bruhl

1678602  (urn:lsid:marinespecies.org:taxname:1678602)

  1. Biota
  2. Plantae (Kingdom)
  3. Viridiplantae (Subkingdom)
  4. Streptophyta (Infrakingdom)
  5. Tracheophyta (Phylum (Division))
  6. Spermatophytina (Subphylum (Subdivision))
  7. Magnoliopsida (Class)
  8. Lilianae (Superorder)
  9. Poales (Order)
  10. Cyperaceae (Family)
  11. Schoeneae (Tribe)
  12. Anthelepidinae (Subtribe)
  13. Anthelepis (Genus)
  14. Anthelepis undulata (Species)
accepted
Species
marine, brackish, fresh, terrestrial
recent only
Thwaites, G. H. K.; Hooker, J. D. (eds). (1858-1864). Enumeratio plantarum Zeylaniae: An enumeration of Ceylon plants, with descriptions of the new and little known genera and species, observations on their habitats, uses, native names, etc. Parts 1-5., available online at https://www.biodiversitylibrary.org/page/528363#page/1/mode/1up
page(s): 353; note: Author of name is Thwaites alone: he was the author of the Cyperaceae treatment in that work (in part 5, 1864) [details] 
Holotype  K 000960125, geounit Sri Lanka  
Holotype K 000960125, geounit Sri Lanka [details]
Description Erect robust perennial, forming dense tussocks, with thick, long rhizomes. Culms not noded, slender, rigid, obtusely...  
Description Erect robust perennial, forming dense tussocks, with thick, long rhizomes. Culms not noded, slender, rigid, obtusely trigonous above, distinctly trigonous at the base, sulcate-striate when dried, smooth, 30–90(–132) cm tall, 1–3(–4) mm in diameter. Leaves all basal, with well developed blade, 35–72(–86) cm long, shorter than to as long as the culms; blade obtusely triangular to subterete in cross-section, rigid, strongly ribbed on the angles, deeply channelled towards the base because of the strongly involute margins, scaberulous on the margins, 0.8–2.6 mm wide; sheath equitant (flattened laterally), dilated at the base, pale to chocolate-brown, striate, dull, with scarious, pale margins, not tightly clasping the culm; junction of sheath and blade apparently lacking a ligule. Lowest inflorescence bract erect, similar to the leaves, shorter to slightly longer than the inflorescence, 8–15 cm long, often breaking off after anthesis, upper bracts decreasing in length and becoming glume-like; sheath usually short, 2–12 mm long, reddish brown, lamina linear. Inflorescence compound, paniculiform, erect, rather diffuse to dense, narrow to spreading, (6–)11–29 cm long, with several internodes, consisting of 4–10 distant fascicles of branches in the bract axils; branches 1–3 together, unequal, 2.5–22 cm long, exserted from the sheath, rigid, flexuous, compressed, scaberulous on the margins. Spikelets subsessile, in clusters of 2–8, 4–6 mm long, 1–l.5 mm in diameter, lanceolate, subterete to slightly compressed, 1-flowered, brown, the rachis not elongated or flexuous. Glumes 4,2–5 mm long, oblong-lanceolate, acute, obscurely distichous, membranous, yellowish-brown with reddish-brown markings on the sides, whitish on the margins, keel brown, glabrous except for sparse minute prickle hairs along midrib, sides each with 2–6 white striations or thin nerves; basal 2 glumes 2–3 mm long, sterile; next glumes 4–5 mm long, with a bisexual flower. Hypogynous bristles (3–)6, linear to linear-lanceolate or rarely lanceolate, 0.3–0.7(–1.1) mm long, shorter than nutlet, margins with dense, white, short, antrorse hairs, falling with the nutlet. Stamens 3; filaments 3.4–3.7 mm long, glabrous; anthers 2.0–2.3 mm long, ~0.2 mm wide, twisted when dry, apiculum up to 0.4 mm long, narrowly triangular. Style 3-fid, 2.2–3.9 mm long, branching for 1/4–1/3 of its length, slender, mostly of similar thickness, but swollen at the base, dark brown at maturity, deciduous. Nutlet narrow-ellipsoid to obovoid, with 3 whitish ribs, slightly reticulate-rugulose at 40? magnification, papillate or shortly hispidulous at the apex, otherwise glabrous, yellowish-brown when immature, dark brown to blackish at maturity, l.3–1.5 mm long, 0.7–0.8 mm in diameter. [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Anthelepis undulata (Thwaites) R.L.Barrett, K.L.Wilson & J.J.Bruhl. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1678602 on 2025-09-13
Date
action
by
2023-09-06 07:35:01Z
created
Larridon, Isabel
2024-12-10 11:47:54Z
unchecked
db_admin
2025-07-25 05:21:29Z
changed
Wilson, Karen L.

Creative Commons License The webpage text is licensed under a Creative Commons Attribution 4.0 License


Nomenclature

original description Thwaites, G. H. K.; Hooker, J. D. (eds). (1858-1864). Enumeratio plantarum Zeylaniae: An enumeration of Ceylon plants, with descriptions of the new and little known genera and species, observations on their habitats, uses, native names, etc. Parts 1-5., available online at https://www.biodiversitylibrary.org/page/528363#page/1/mode/1up
page(s): 353; note: Author of name is Thwaites alone: he was the author of the Cyperaceae treatment in that work (in part 5, 1864) [details] 

basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details] 

new combination reference Barrett, R. L.; Wilson, K. L.; Bruhl, J. J. (2019). Anthelepis, a new genus for four mainly tropical species of Cyperaceae from Australia, New Caledonia and South-East Asia. Australian Systematic Botany, 32(4): 269-289., available online at https://doi.org/10.1071/SB18047
page(s): 284 [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  PDF available [request]

 
 Present  Inaccurate  Introduced: alien  Containing type locality 
   

Holotype K 000960125, geounit Sri Lanka [details]
From editor or global species database
Description Erect robust perennial, forming dense tussocks, with thick, long rhizomes. Culms not noded, slender, rigid, obtusely trigonous above, distinctly trigonous at the base, sulcate-striate when dried, smooth, 30–90(–132) cm tall, 1–3(–4) mm in diameter. Leaves all basal, with well developed blade, 35–72(–86) cm long, shorter than to as long as the culms; blade obtusely triangular to subterete in cross-section, rigid, strongly ribbed on the angles, deeply channelled towards the base because of the strongly involute margins, scaberulous on the margins, 0.8–2.6 mm wide; sheath equitant (flattened laterally), dilated at the base, pale to chocolate-brown, striate, dull, with scarious, pale margins, not tightly clasping the culm; junction of sheath and blade apparently lacking a ligule. Lowest inflorescence bract erect, similar to the leaves, shorter to slightly longer than the inflorescence, 8–15 cm long, often breaking off after anthesis, upper bracts decreasing in length and becoming glume-like; sheath usually short, 2–12 mm long, reddish brown, lamina linear. Inflorescence compound, paniculiform, erect, rather diffuse to dense, narrow to spreading, (6–)11–29 cm long, with several internodes, consisting of 4–10 distant fascicles of branches in the bract axils; branches 1–3 together, unequal, 2.5–22 cm long, exserted from the sheath, rigid, flexuous, compressed, scaberulous on the margins. Spikelets subsessile, in clusters of 2–8, 4–6 mm long, 1–l.5 mm in diameter, lanceolate, subterete to slightly compressed, 1-flowered, brown, the rachis not elongated or flexuous. Glumes 4,2–5 mm long, oblong-lanceolate, acute, obscurely distichous, membranous, yellowish-brown with reddish-brown markings on the sides, whitish on the margins, keel brown, glabrous except for sparse minute prickle hairs along midrib, sides each with 2–6 white striations or thin nerves; basal 2 glumes 2–3 mm long, sterile; next glumes 4–5 mm long, with a bisexual flower. Hypogynous bristles (3–)6, linear to linear-lanceolate or rarely lanceolate, 0.3–0.7(–1.1) mm long, shorter than nutlet, margins with dense, white, short, antrorse hairs, falling with the nutlet. Stamens 3; filaments 3.4–3.7 mm long, glabrous; anthers 2.0–2.3 mm long, ~0.2 mm wide, twisted when dry, apiculum up to 0.4 mm long, narrowly triangular. Style 3-fid, 2.2–3.9 mm long, branching for 1/4–1/3 of its length, slender, mostly of similar thickness, but swollen at the base, dark brown at maturity, deciduous. Nutlet narrow-ellipsoid to obovoid, with 3 whitish ribs, slightly reticulate-rugulose at 40? magnification, papillate or shortly hispidulous at the apex, otherwise glabrous, yellowish-brown when immature, dark brown to blackish at maturity, l.3–1.5 mm long, 0.7–0.8 mm in diameter. [details]
To Biodiversity Heritage Library (1 publication) (from synonym Machaerina pulchra (Ridl.) T.Koyama)
To Biodiversity Heritage Library (1 publication) (from synonym Machaerina undulata (Thwaites) T.Koyama)
To Biodiversity Heritage Library (11 publications) (from synonym Tricostularia fimbristyloides Benth.)
To Biodiversity Heritage Library (2 publications) 
To Biodiversity Heritage Library (22 publications) (from synonym Cladium undulatum Thwaites)
To Biodiversity Heritage Library (3 publications) (from synonym Schoenus fimbristyloides (Benth.) F.Muell.)
To Biodiversity Heritage Library (5 publications) (from synonym Lepidosperma zeylanicum Lindl. ex Boeckeler)
To Biodiversity Heritage Library (6 publications) (from synonym Tricostularia undulata (Thwaites) J.Kern)
To Biodiversity Heritage Library (6 publications) (from synonym Carpha junciformis Boeckeler)
To Biodiversity Heritage Library (6 publications) (from synonym Tricostularia zeylanica (Lindl. ex Boeckeler) Benth.)
To Biodiversity Heritage Library (7 publications) (from synonym Chaetospora fimbristyloides F.Muell.)
To Biodiversity Heritage Library (8 publications) (from synonym Cladium pulchrum Ridl.)
To European Nucleotide Archive, ENA (Anthelepis undulata) 
To GenBank (2 nucleotides; 0 proteins) 
To GenBank (2 nucleotides; 0 proteins) (from synonym Tricostularia undulata (Thwaites) J.Kern)
To GenBank (2 nucleotides; 0 proteins) (from synonym Cladium undulatum Thwaites)
To International Plant Names Index (IPNI) (from synonym Machaerina pulchra (Ridl.) T.Koyama)
To International Plant Names Index (IPNI) (from synonym Lepidosperma zeylanicum Lindl. ex Boeckeler)
To International Plant Names Index (IPNI) (from synonym Cladium undulatum Thwaites)
To International Plant Names Index (IPNI) (from synonym Lepidosperma chinense var. alpinum Ridl.)
To International Plant Names Index (IPNI) (from synonym Machaerina undulata (Thwaites) T.Koyama)
To International Plant Names Index (IPNI) (from synonym Cladium undulatum var. fimbristyloides (F.Muell.) Domin)
To International Plant Names Index (IPNI) (from synonym Chaetospora fimbristyloides F.Muell.)
To International Plant Names Index (IPNI) (from synonym Mariscus pulcher (Ridl.) Fernald)
To International Plant Names Index (IPNI) (from synonym Schoenus fimbristyloides (Benth.) F.Muell.)
To International Plant Names Index (IPNI) (from synonym Cladium pulchrum Ridl.)
To International Plant Names Index (IPNI) 
To International Plant Names Index (IPNI) (from synonym Tricostularia zeylanica (Lindl. ex Boeckeler) Benth.)
To International Plant Names Index (IPNI) (from synonym Tricostularia undulata (Thwaites) J.Kern)
To International Plant Names Index (IPNI) (from synonym Tricostularia fimbristyloides Benth.)
To International Plant Names Index (IPNI) (from synonym Carpha junciformis Boeckeler)
To Plants of the World Online (from synonym Tricostularia zeylanica (Lindl. ex Boeckeler) Benth.)
To Plants of the World Online (from synonym Tricostularia undulata (Thwaites) J.Kern)
To Plants of the World Online 
To Plants of the World Online (from synonym Tricostularia fimbristyloides Benth.)
To Plants of the World Online (from synonym Carpha junciformis Boeckeler)
To Plants of the World Online (from synonym Cladium pulchrum Ridl.)
To Plants of the World Online (from synonym Lepidosperma zeylanicum Lindl. ex Boeckeler)
To Plants of the World Online (from synonym Cladium undulatum Thwaites)
To Plants of the World Online (from synonym Chaetospora fimbristyloides F.Muell.)
To Plants of the World Online (from synonym Mariscus pulcher (Ridl.) Fernald)
To Plants of the World Online (from synonym Schoenus fimbristyloides (Benth.) F.Muell.)
To Plants of the World Online (from synonym Cladium undulatum var. fimbristyloides (F.Muell.) Domin)
To Plants of the World Online (from synonym Lepidosperma chinense var. alpinum Ridl.)
To Plants of the World Online (from synonym Machaerina pulchra (Ridl.) T.Koyama)
To Plants of the World Online (from synonym Machaerina undulata (Thwaites) T.Koyama)
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