Paspalidium grandispiculatum - profile

Indicative distribution


   Loading map...
Key:
known
predicted
The areas shown in pink and/purple are the sub-regions where the species or community is known or predicted to occur. They may not occur thoughout the sub-region but may be restricted to certain areas. ( click here to see geographic restrictions). The information presented in this map is only indicative and may contain errors and omissions.
Scientific name: Paspalidium grandispiculatum
Conservation status in NSW: Vulnerable
Commonwealth status: Vulnerable
Gazetted date: 24 Sep 2010
Profile last updated: 25 Sep 2013

Description

Paspalidium grandispiculatum is a perennial tufted grass to 150 cm tall with robust woody rhizomes. Leaf-sheaths are glabrous, smooth, and without a keel. Leaf-blades are linear, 4-8 cm long, 2-3 mm wide, flat or folded flat together lengthwise. Inflorescence is a a terminal raceme to 16 cm long, comprising widely spaced secondary racemes to 3 cm long, each bearing loose, irregularly arranged spikelets on pedicels to 1 mm long. The species is distinguished from other Australian species of Paspalidium by its large spikelets and characteristic woody culms arising from robust woody rhizomes. Most other species of Paspalidium possess contracted rootstocks and sometimes contracted rhizomes but not the elongated rhizomes of Paspalidium grandispiculatum.

Distribution

Paspalidium grandispiculatum occurs in south east Queensland and north east NSW. In NSW, it is known from the north of Grafton in the Mount Neville, Gibberagee and Doubleduke vicinities. Information on the number of individual plants is lacking, but there are probably many thousands of ramets; the degree of clonality within populations is unknown.

Habitat and ecology

  • In NSW, Paspalidium grandispiculatum is likely to be restricted to poor sandy soils on sandstone. It has been found in open forest of Turpentine (Syncarpia glomulifera) on undulating topography as well as in drier foresdt types on ridges.
  • In Queensland, the species is known from wet sclerophyll forest to drier mixed eucalypt communities. It is also known from native pasture occurring as a result of land clearing.
  • The species can be locally semi-dominant to dominant in the ground layer.
  • The species is assumed to be wind-pollinated, and is reported to flower from January to May in Queensland populations.
  • Reproduces by both sexually produced seed and by vegetative budding from the rhizomes, from which it is capable of regeneration after fire.
  • No information is available on seed viability or longevity.

Regional distribution and habitat

Click on a region below to view detailed distribution, habitat and vegetation information.


Threats

Recovery strategies

Activities to assist this species

Information sources

CMA CMA sub-region Known or predicted Geographic restrictions region
Northern RiversClarence Lowlands Known
Northern RiversClarence Sandstones Known