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Herbarium specimen. Copyright DERM

Cyperus haspan subsp. juncoides

Family

Cyperaceae

Botanical Name

Cyperus haspan subsp. juncoides (Lam.) Kuk.

Kukenthal, G. (1926) Repert. Spec. Nov. Regni Veg. 23: 184. Type: ?.

Synonyms

Cyperus juncoides Lam., Tableau Encyclopédique et Methodique ... Botanique 1: 147(1791), Type: North America.

Stem

Rhizome creeping so that the culms are solitary. Culms strongly triquetrous, up to 100 cm tall.

Leaves

Leaves mostly reduced to bladeless sheaths 2-10 cm long, slightly septate-nodulose, 2-5 mm wide.

Flowers

Inflorescence compound with 5-20 primary branches up to 15 cm long; digitate clusters to ca. 20 mm diam.; involucral bracts large and leaf-like, 1 slightly longer than inflorescence. Spikelets flattened, 3-10 per cluster, 5-10 x 1-2 mm, 10-35 -flowered; rachilla visible between the glumes. Glumes obtuse with prominent green 3-nerved midrib, 1-1.8 mm long

Fruit

Nut trigonous, broadly obovoid, less than half as long as the glume, 0.4-0.8 x 0.3-0.4 mm long, whitish to pale yellow brown.

Seedlings

Features not available.

Distribution and Ecology

A Pantropical species, occurs in WA, NT, CYP, NEQ to Evans Head in the south of NSW. Altitudinal range from near sea level to 920 m. Grows along streams in rainforest, in Melaleuca-pandanus swamps and well watered places in various types of woodland.

WA

X

NT

X

CYP

X

NEQ

X

Grass

X

RFK Code

4202