Cyperaceae taxon details
Asterochaete dactyloides (Vahl) K.L.Wilson & J.J.Bruhl
1776087 (urn:lsid:marinespecies.org:taxname:1776087)
accepted
Species
terrestrial
Not documented
Description Erect perennial, 1–3 m high; rhizome stout. Culms triquetrous to trigonous in cross-section, 1–3-noded, each node...
Description Erect perennial, 1–3 m high; rhizome stout. Culms triquetrous to trigonous in cross-section, 1–3-noded, each node bearing a single leaf. Leaves crowded at the base of the culms; blades straight, 40–105 cm long, (7–)11–25 mm wide, V-shaped in cross-section, keeled abaxially, scabrous on keel near apex; sheaths pale yellow-brown. Inflorescence with 4–9 internodes; spikelets (300–)500–3000 in many (10–60) dense ovoid clusters. Involucral bracts several, lowest much shorter than the inflorescence, 15–45 cm long, up to 22 mm wide. Spikelets 6.2–9 mm long, with 2 bisexual flowers; glumes 6, pale yellow-brown; lowest 3 glumes empty, persistent; the next 2 fertile, and the uppermost one empty, deciduous; the lowest 2 glumes shorter than the rest; the proximal fertile glume 5.8–7.5 mm long, 1.8–2.8 mm wide; the second fertile glume 5.0–7 mm long, 1.5–2 mm wide; axis elongated above proximal fertile glume and adnate to the base of that glume. Bristles: upper part (2/5–2/3) of each bristle terete, antrorsely scabrous, breaking off readily; lowest 1/3–3/5 much more slender, smooth; outer 3 bristles slightly shorter than inner 3; the inner 3 from slightly shorter than to slightly exceeding the nutlet body, 3.1–3.8 mm long. Anthers yellow when immature but pale greyish at maturity, 2.4–4.2 mm long (excluding appendage), with apical appendage 0.2–0.3 mm long, approximately 0.1 mm wide. Style base 0.3–1.0 mm long, 0.1–0.3 mm in diameter. Nutlets 2 per spikelet, narrow-ellipsoid to obovoid, 2.1–3.4 mm long, 0.9–1.1 mm in diameter, dark brown at maturity, surface finely reticulate. [details]
Cyperaceae Working Group. (2025). [see How to cite]. Global Cyperaceae Database. Asterochaete dactyloides (Vahl) K.L.Wilson & J.J.Bruhl. Accessed at: https://cyperaceae.org/aphia.php?p=taxdetails&id=1776087 on 2026-01-13
Date
action
by
The webpage text is licensed under a Creative Commons
Attribution 4.0 License
Nomenclature
new combination reference
Bruhl, J. J.; Wilson, K. L.; Zhang, X. (2024). A taxonomic review of the austral genera Asterochaete and Carpha (Cyperaceae, Carpheae). <em>Australian Systematic Botany.</em> 37(3)., available online at https://doi.org/10.1071/sb23015
page(s): 21 [details]
page(s): 21 [details]
From editor or global species database
Description Erect perennial, 1–3 m high; rhizome stout. Culms triquetrous to trigonous in cross-section, 1–3-noded, each node bearing a single leaf. Leaves crowded at the base of the culms; blades straight, 40–105 cm long, (7–)11–25 mm wide, V-shaped in cross-section, keeled abaxially, scabrous on keel near apex; sheaths pale yellow-brown. Inflorescence with 4–9 internodes; spikelets (300–)500–3000 in many (10–60) dense ovoid clusters. Involucral bracts several, lowest much shorter than the inflorescence, 15–45 cm long, up to 22 mm wide. Spikelets 6.2–9 mm long, with 2 bisexual flowers; glumes 6, pale yellow-brown; lowest 3 glumes empty, persistent; the next 2 fertile, and the uppermost one empty, deciduous; the lowest 2 glumes shorter than the rest; the proximal fertile glume 5.8–7.5 mm long, 1.8–2.8 mm wide; the second fertile glume 5.0–7 mm long, 1.5–2 mm wide; axis elongated above proximal fertile glume and adnate to the base of that glume. Bristles: upper part (2/5–2/3) of each bristle terete, antrorsely scabrous, breaking off readily; lowest 1/3–3/5 much more slender, smooth; outer 3 bristles slightly shorter than inner 3; the inner 3 from slightly shorter than to slightly exceeding the nutlet body, 3.1–3.8 mm long. Anthers yellow when immature but pale greyish at maturity, 2.4–4.2 mm long (excluding appendage), with apical appendage 0.2–0.3 mm long, approximately 0.1 mm wide. Style base 0.3–1.0 mm long, 0.1–0.3 mm in diameter. Nutlets 2 per spikelet, narrow-ellipsoid to obovoid, 2.1–3.4 mm long, 0.9–1.1 mm in diameter, dark brown at maturity, surface finely reticulate. [details]
