PlantNET Home PlantNET Home | Search NSW Flora | Contact Us  
FloraOnline
Introduction
Plant Name Search
Index Search
Spatial Search
Identification Keys
Classification
Glossary
HerbLink (Type Images)
WeedAlert
Other PlantNET Sites
Other Data Sources
NEW SOUTH WALES FLORA ONLINE Printable Page

Cyperus haspan L.
Family Cyperaceae
Cyperus haspan L. APNI*

Description: Slender, tufted perennial with short rhizome but sometimes apparently annual with fibrous roots only. Culms triquetrous to almost 3-winged, smooth, 10–80 cm high, 1–3 mm diam.

Leaves slightly septate–nodulose, reduced to sheath or with blade usually shorter than culms, 2–5 mm wide.

Inflorescence compound with 5–20 primary branches to 15 cm long; digitate clusters to 20 mm diam.; involucral bracts leaf-like, 1 slightly longer or 2 or 3 shorter than the inflorescence. Spikelets flattened, 3–10 per cluster, 5–10 mm long, 1–2 mm wide in side view, 10–35-flowered; rachilla not winged, persistent. Glumes obtuse, with 3-nerved midrib, 1–1.8 mm long, red-brown, occasionally paler. Stamens 1–3. Style 3-fid.

Nut trigonous, broad-obovoid, less than half as long as glume, 0.4–0.8 mm long, c. 0.4 mm diam., whitish to pale yellow-brown.


Flowering: spring–summer.

Distribution and occurrence: Grows on margins of swamps and creeks; in coastal areas north from Sydney region and in Pilliga Scrub.
NSW subdivisions: NC, CC, NWP
Other Australian states: Qld N.T. W.A.
AVH map***

Text by K. L. Wilson (1993)
Taxon concept:

 Key to the subspecies 
1Stamen 1; rhizome short and culms rather clustered; culms to 40 cm high; leaf blades usually well-developed; glumes densely overlapping so that rachilla is not visible; nut 0.4–0.5 mm longsubsp. haspan
Stamens 3 or occasionally 2; rhizome creeping so that culms are solitary; culms to 100 cm high; leaves mostly reduced to sheaths; glumes less densely overlapping so that rachilla is visible between them; nut 0.5–0.8 mm longsubsp. juncoides

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.
  Privacy | Copyright | Disclaimer | About PlantNET | Cite PlantNET