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

Hymenachne amplexicaulis (Rudge) Nees
Family Poaceae
Hymenachne amplexicaulis (Rudge) Nees APNI*

Description: Robust decumbent perennial to c. 3.5 m tall, culms spongy, rooting from lower nodes.

Ligule membranous, 1–2.5 mm long; blade base amplexicaule; blade 15–33 cm long, 12–128 mm wide, glabrous; margins scabrous, tuberculate-ciliate, hairy at base.

Inflorescence a spike-like panicle 10–40 cm long, 1–2 cm wide. Spikelets solitary. Fertile spikelets 2-flowered lower floret sterile, upper fertile, dorsally compressed, acuminate, 3–4 mm long, falling entire. Glumes dissimilar, thinner than fertile lemma; lower 1–1.7 mm long, 30% spikelet length, hyaline, 3-nerved, cuspidate; upper glume 2.8–3.9 mm long, 70–80% spikelet length, 5-nerved, caudate, awned with awn 0.5 mm long. Sterile lemma similar to upper glume, 3.6–4.6 mmm long, 100% spikelet length, cartilaginous, 2-nerved, without keels, acuminate.


Herbarium
Sheet

Herbarium
Sheet

Distribution and occurrence: Native to Central and South America - Mexico to Paraguay.
NSW subdivisions: *NC
Other Australian states: *Qld *N.T.
*
Declared Noxious Weed
AVH map***

A local cultivar (cv. 'Olive') has become naturalised and posing a threat to natural wetlands in the tropics and warm temperate areas.

Text by (2008) Jacobs, S.W.L., Whalley, R.D.B., Wheeler, D.J.B.
Taxon concept: Grasses of New South Wales 4th ed.


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