Post by Melanie on Mar 26, 2007 19:35:15 GMT 1
Description
An erect, hairless, perennial grass between 50-60 cm high. Stem: The stems are
ribbed, slender and thread-like (but quite stout and stiff). Leaves: The leaf blades are
flat or loosely inrolled when dry. They are finely ribbed and rough on the leaf margins
and ribs of the lower leaf surface (up to 12 cm long and 4 mm wide). The sheaths
surrounding the base of the leaves are ribbed and open (the uppermost sheaths are
fairly loose). Seedheads (panicle): The seedhead is dense and cylindrical (up to 9 cm
long and 1 cm wide). Spikelets (units of the seedhead): The purplish spikelets are
approximately 7 mm long and flattened laterally. The leaf-like structures surrounding
the spikelet (glumes) are narrow and sickle-shaped. Seed cover (lemma): The seed
cover is densely and finely hairy (rough to the touch) and approximately 4.5 mm long
(much shorter then the glumes). The seed cover tips are 4 toothed. The long hair-like
projection (awn) is attached near the seed cover base and exceeds the end by
approximately 4 mm. The awn is sharply bent and fairly stout (description from Curtis
& Morris 1994).
Distribution and Habitat
This species is endemic to Tasmania and is known only from the type specimen
collected by R.W. Lawrence around 1831. The location of this collection is unknown,
however it is possibly from the Launceston area. Habitat includes dry sclerophyll
forest (Curtis & Morris 1994, TPLUC 1996).
Key Sites and Populations
Deyeuxia lawrencei is presumed extinct in Tasmania.
Known Reserves
This species is not currently known from any reserve.
Ecology and Management
Deyeuxia lawrencei can persist through fire and grazing (TPLUC 1996).
Wind is the most likely pollination vector for this species (A. Hingston pers. comm.).
Conservation Status Assessment
There is no immediate need for reassessment of Deyeuxia lawrencei.
Further Information
Curtis, WM & Morris, DI 1994, The Student’s Flora of Tasmania, Part 4B,
Printing Authority of Tasmania, Hobart.
Kirkpatrick, JB 1991, Tasmanian Native Bush: A Management Handbook,
Tasmanian Environment Centre, Hobart.
Tasmanian Public Land Use Commission 1996, Environment & Heritage Report
Vol IV, Background Report, Part C, Tasmanian Commonwealth Regional Forest
Agreement, Hobart.
Tasmanian Distribution
There is no distribution information available for Deyeuxia lawrencei.
Date last modified: 03/09/03
An erect, hairless, perennial grass between 50-60 cm high. Stem: The stems are
ribbed, slender and thread-like (but quite stout and stiff). Leaves: The leaf blades are
flat or loosely inrolled when dry. They are finely ribbed and rough on the leaf margins
and ribs of the lower leaf surface (up to 12 cm long and 4 mm wide). The sheaths
surrounding the base of the leaves are ribbed and open (the uppermost sheaths are
fairly loose). Seedheads (panicle): The seedhead is dense and cylindrical (up to 9 cm
long and 1 cm wide). Spikelets (units of the seedhead): The purplish spikelets are
approximately 7 mm long and flattened laterally. The leaf-like structures surrounding
the spikelet (glumes) are narrow and sickle-shaped. Seed cover (lemma): The seed
cover is densely and finely hairy (rough to the touch) and approximately 4.5 mm long
(much shorter then the glumes). The seed cover tips are 4 toothed. The long hair-like
projection (awn) is attached near the seed cover base and exceeds the end by
approximately 4 mm. The awn is sharply bent and fairly stout (description from Curtis
& Morris 1994).
Distribution and Habitat
This species is endemic to Tasmania and is known only from the type specimen
collected by R.W. Lawrence around 1831. The location of this collection is unknown,
however it is possibly from the Launceston area. Habitat includes dry sclerophyll
forest (Curtis & Morris 1994, TPLUC 1996).
Key Sites and Populations
Deyeuxia lawrencei is presumed extinct in Tasmania.
Known Reserves
This species is not currently known from any reserve.
Ecology and Management
Deyeuxia lawrencei can persist through fire and grazing (TPLUC 1996).
Wind is the most likely pollination vector for this species (A. Hingston pers. comm.).
Conservation Status Assessment
There is no immediate need for reassessment of Deyeuxia lawrencei.
Further Information
Curtis, WM & Morris, DI 1994, The Student’s Flora of Tasmania, Part 4B,
Printing Authority of Tasmania, Hobart.
Kirkpatrick, JB 1991, Tasmanian Native Bush: A Management Handbook,
Tasmanian Environment Centre, Hobart.
Tasmanian Public Land Use Commission 1996, Environment & Heritage Report
Vol IV, Background Report, Part C, Tasmanian Commonwealth Regional Forest
Agreement, Hobart.
Tasmanian Distribution
There is no distribution information available for Deyeuxia lawrencei.
Date last modified: 03/09/03
