Machaerina abbreviata (Nees) R.L.Barrett & K.L.Wilson APNI* Synonyms: Machaerina nuda (Steud.) J.Kern APNI*
Baumea nuda (Steud.) S.T.Blake APNI*
Schoenus nudus Steud. APNI*
Description: Slender, tufted perennial with short rhizome.
Culms slender, rigid, compressed to terete, nodeless, striate, glabrous, smooth, 10–40 cm high, 0.5–0.8 mm diam. Leaves basal; blade terete to sulcate, to twice as long as culms, c. 0.5 mm diam.; sheath straw-coloured often with pale reddish tinges, dull.
Inflorescence oblong in outline, narrow, erect, 2–7 cm long, to 1 cm diam.; lowest involucral bract much shorter than inflorescence. Spikelets few, 1-flowered, 5–7 mm long. Glumes 3, acute, pale to mid-red-brown, with margins glabrous; fertile glumes 4–7 mm long. Anthers 1.2–1.4 mm long, excluding appendage c. 0.2 mm long.
Nut ellipsoid to ovoid, 2.0–2.3 mm long, 1.0–1.3 mm diam., reticulate or colliculate to smooth, hispid at apex, ± shining, red-brown to blackish.
Flowering: spring–summer.
Distribution and occurrence: Sporadic on NC, south to Jervis Bay and inland to Blue Mtns. Grows in swamps or along streams.
NSW subdivisions: NC, CC, SC, NT, CT
Other Australian states: Qld
Previously called Baumea nuda or Machaerina nuda.
Text by K. L. Wilson (1993); edited KL Wilson (Jan 2023; Feb 2023; October 2024)
Taxon concept: Flora of NSW 4 (1993) as Baumea nuda
APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
***The AVH map option provides a detailed interactive Australia wide distribution map drawn from collections held by all major Australian herbaria participating in the Australian Virtual Herbarium project.
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