Cyperaceae taxon details
Anthelepis clarksonii R.L.Barrett, K.L.Wilson & J.J.Bruhl
1678599 (urn:lsid:marinespecies.org:taxname:1678599)
accepted
Species
recent only
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): 278 [details]
page(s): 278 [details]
Holotype NSW 687722, geounit Queensland
Holotype NSW 687722, geounit Queensland [details]
Description Erect robust perennial, forming dense tussocks, with thick, short to long rhizomes. Culms not noded, slender, rigid,...
Description Erect robust perennial, forming dense tussocks, with thick, short to long rhizomes. Culms not noded, slender, rigid, semi-terete with a single lateral groove along the length of the culm, finely but distinctly striate when dried, smooth, 42–68(–91) cm tall, 1–3 mm in diameter Leaves all basal, most with well developed blade (those below ground level reduced to a sheath), 16–44 cm long, shorter than the culms; blade flat to subterete in cross-section, rigid, ribbed on the angles, usually deeply channelled because partially involute margins, very finely scaberulous on the margins of new growth, often glabrescent, 1.2–3.0 mm wide; sheath equitant (flattened laterally), dilated at the base, pale to mid-brown, striate, dull, with slender, 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 longer than the inflorescence, 8–16 cm long, upper bracts decreasing in length but remaining leaf-like, sometimes resinous, often spreading at ?90? to the axis; sheath distinct, 8–12 mm long, reddish-brown, lamina linear. Inflorescence compound, paniculiform, erect, compact, narrow, 8–19 cm long, with several internodes, consisting of 4–8 distant fascicles of branches in the bract axils; branches 1(or 2) together, unequal, 1–3.5 cm long, exserted from but shorter than the sheath, rigid, ?straight, compressed, scaberulous on the margins. Spikelets subsessile, in dense, head-like clusters of 6–24, 5–7 mm long, 0.6–l.6 mm in diameter, lanceolate, subterete, 1-flowered, pale brown, the rachis not elongated or flexuous. Glumes 4, 2.3–7mmlong, lanceolate, acuminate, obscurely distichous or spiral, membranous, yellow–brown with red–brown markings on the sides, keel brown, margins similar, glabrous except for sparse minute prickle hairs along midrib, sides not nerved; basal 2glumes2.3–2.9 mm long, sterile; next glumes 5–7mm long, with a bisexual flower. Hypogynous bristles 6, linear to linear-lanceolate, 0.2–0.5 mm long, shorter than nutlet, margins glabrous or with a few white, short, antrorse hairs, mostly near the apex when present, falling with the nutlet. Stamens 3; filaments 3.2–4.6 mm long, glabrous; anthers 2.9–4.7 mm long, ~0.3 mm wide, twisted when dry, apiculum up to 0.5 mm long, narrowly triangular. Style 3-fid, 6.0–8.6 mm long, branching for ~1/2 of its length, slender, of similar thickness for its entire length, not swollen at base, dark brown at maturity, deciduous. Nutlet ellipsoid to obovoid, with 3 slender, whitish ribs, slightly reticulate-rugulose at 40? magnification, glabrous throughout, creamy-brown when immature, reddish-brown to blackish at maturity, l.4–1.5 mm long, 0.7–0.8 mm in diameter. [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Anthelepis clarksonii R.L.Barrett, K.L.Wilson & J.J.Bruhl. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1678599 on 2025-09-13
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2024-12-10 11:47:54Z
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Nomenclature
original description
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): 278 [details]
basis of record Plants of the World Online (POWO). , available online at https://powo.science.kew.org/ [details]
page(s): 278 [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
Holotype NSW 687722, geounit Queensland [details]
From editor or global species database
Description Erect robust perennial, forming dense tussocks, with thick, short to long rhizomes. Culms not noded, slender, rigid, semi-terete with a single lateral groove along the length of the culm, finely but distinctly striate when dried, smooth, 42–68(–91) cm tall, 1–3 mm in diameter Leaves all basal, most with well developed blade (those below ground level reduced to a sheath), 16–44 cm long, shorter than the culms; blade flat to subterete in cross-section, rigid, ribbed on the angles, usually deeply channelled because partially involute margins, very finely scaberulous on the margins of new growth, often glabrescent, 1.2–3.0 mm wide; sheath equitant (flattened laterally), dilated at the base, pale to mid-brown, striate, dull, with slender, 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 longer than the inflorescence, 8–16 cm long, upper bracts decreasing in length but remaining leaf-like, sometimes resinous, often spreading at ?90? to the axis; sheath distinct, 8–12 mm long, reddish-brown, lamina linear. Inflorescence compound, paniculiform, erect, compact, narrow, 8–19 cm long, with several internodes, consisting of 4–8 distant fascicles of branches in the bract axils; branches 1(or 2) together, unequal, 1–3.5 cm long, exserted from but shorter than the sheath, rigid, ?straight, compressed, scaberulous on the margins. Spikelets subsessile, in dense, head-like clusters of 6–24, 5–7 mm long, 0.6–l.6 mm in diameter, lanceolate, subterete, 1-flowered, pale brown, the rachis not elongated or flexuous. Glumes 4, 2.3–7mmlong, lanceolate, acuminate, obscurely distichous or spiral, membranous, yellow–brown with red–brown markings on the sides, keel brown, margins similar, glabrous except for sparse minute prickle hairs along midrib, sides not nerved; basal 2glumes2.3–2.9 mm long, sterile; next glumes 5–7mm long, with a bisexual flower. Hypogynous bristles 6, linear to linear-lanceolate, 0.2–0.5 mm long, shorter than nutlet, margins glabrous or with a few white, short, antrorse hairs, mostly near the apex when present, falling with the nutlet. Stamens 3; filaments 3.2–4.6 mm long, glabrous; anthers 2.9–4.7 mm long, ~0.3 mm wide, twisted when dry, apiculum up to 0.5 mm long, narrowly triangular. Style 3-fid, 6.0–8.6 mm long, branching for ~1/2 of its length, slender, of similar thickness for its entire length, not swollen at base, dark brown at maturity, deciduous. Nutlet ellipsoid to obovoid, with 3 slender, whitish ribs, slightly reticulate-rugulose at 40? magnification, glabrous throughout, creamy-brown when immature, reddish-brown to blackish at maturity, l.4–1.5 mm long, 0.7–0.8 mm in diameter. [details]
