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Schoenoplectus validus (Vahl) A.Löve & D.Löve
Family Cyperaceae
Schoenoplectus validus (Vahl) A.Löve & D.Löve APNI*

Synonyms: Scirpus validus Vahl APNI*

Description: Tall, rhizomatous perennial. Culms terete, bluish green, (60-)100–200 cm high, 3–10 mm diam.

Leaves reduced; rarely blade to 10 cm long.

Inflorescence umbel-like, with branches 1–8 cm long, scabrous, with 1–4 spikelets per branch; involucral bract much shorter than inflorescence, 2–5 cm long. Spikelets oblong-ovoid, acute, 5–11 mm long, 4–5 mm diam. Glumes retuse, very shortly mucronate, with ciliate margins, red-brown, 3–4 mm long. Hypogynous bristles 6 (rarely fewer), retrorsely scabrous, slightly longer than or equalling nut. Style 2- (or 3-)fid.

Nut obovoid, plano-convex, smooth, shining, grey-brown to dark brown, 2–2.5 mm long, 1.2–1.5 mm diam.

Photo Karen L Wilson

Photo Karen L Wilson

Photo Karen L Wilson

Flowering: spring–summer.

Distribution and occurrence: Widespread but scattered. Also in all other States; New Caledonia, Vanuatu & countries bordering the Pacific.

Grows along creeks, lakes and open swamps (in fresh and brackish water).
NSW subdivisions: NC, CC, SC, NT, CT, ST, NWS, CWS, SWS, NWP, SWP, NFWP, SFWP
Other Australian states: Qld Vic. Tas. W.A. S.A.
AVH map***

Included in a broad concept of S. tabernaemontani (C. C. Gmelin) Palla by some botanists but further study is needed. It differs in features such as the smaller, paler and less hairy glumes from typical S. tabernaemontani. It differs from S. subulatus most obviusly in the culm colour and cross-sectional shape and the form of the hypogynous bristles. It differs from the introduced S. californicus in culm colour and cross-sectional shape and in being generally less robust (see key for other differences).

Text by K. L. Wilson (1993); edited KL Wilson July 2022
Taxon concept: Flora of NSW 4 (1993)

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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