Cyperus reflexus Vahl APNI* Synonyms: Cyperus reflexus Vahl var. reflexus APNI*
Description: Slender perennial with short thick rhizome.
Culms trigonous, smooth, 20–50 cm high, 1–2.5 mm diam.
Leaves scarcely septate-nodulose, shorter than culms, 1–2 mm wide. Inflorescence simple or compound with 4–8 branches to 4 cm long or head-like; digitate clusters 10–15 mm diam.; involucral bracts leaf-like, 3 or 4 exceeding the inflorescence. Spikelets flattened, numerous per cluster, 4–12 mm long, 0.8–2.5 mm wide in side view, 10–24-flowered; rachilla not winged, persistent. Glumes with 3-nerved midrib, 1.5–2 mm long, dark red-brown. Stamen 1. Style 3-fid.
Nut trigonous, obovoid to ellipsoid, two-fifths as long as glume, 0.8–1.4 mm long, c. 0.4 mm diam., grey-brown.
Flowering: spring–summer.
Distribution and occurrence: Scattered in Sydney region and Queanbeyan also naturalised in Victoria. Native of N & S Amer. Grows in disturbed situations.
NSW subdivisions: *CC, *CT
Other Australian states: *Vic.
This belongs to the typical variety of the species (Denton 1978).
Text by K. L. Wilson (1993); edited KL Wilson (Nov2020)
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.
|
