Tylophora linearis - profile

Conservation status in NSW: Vulnerable
National conservation status: Endangered

Description

Slender, almost hairless twiner with a clear sap. Leaves dark green, linear, 1-5 cm long, 0.5-3 mm wide. Flowers purplish, 3-6 mm in diameter, in radiating groups of 3-8.

Location and habitat

Distribution
 Found in the Barraba, Mendooran, Temora and West Wyalong districts in the northern and central western slopes of NSW. Records include Crow Mountain near Barraba, Goonoo SF, Eura SF and Goobang NP. Also occurs in Qld, from near Glenmorgan in the western Darling Downs.

• Grows in dry scrub and open forest. Recorded from low-altitude sedimentary flats in dry woodlands of Eucalyptus fibrosa, Eucalyptus sideroxylon, Eucalyptus albens, Callitris endlicheri, Callitris glaucophylla and Allocasuarina luehmannii.
• Also grows in association with Acacia hakeoides, Acacia lineata, Myoporum species and Casuarina species.
• Flowers in spring, with flowers recorded in November or May with fruiting probably 2 to 3 months later.
• Has been recorded in very low abundances.

Regional information
This species is found in the following catchment management authority regions. Click on a region name to see more details about the distribution, vegetation types and habitat preference of the species in that region.

• Border Rivers/Gwydir
• Central West
• Namoi

Threats

• Forestry activities
• Appropriate disturbance regimes

Recovery strategies

Priority actions are the specific, practical things that must be done to recover a threatened species, population or ecological community. The Department of Environment and Conservation has identified 12 priority actions to help recover the Tylophora linearis in New South Wales.

What needs to be done to recover this species?

• No further degradation or loss of potential habitat.
• Protection from forestry activities .
• Monitoring of populations to determine life history
• Targeted survey work and investigations into species ecology.
• Survey to determine extent of occurrence and identity of records potentially attributable to this species. Baseline surveys required to confirm known and locate new populations.

References

• BRI Herbarium Records. Databased specimen records from the Queensland Herbarium (Brisbane Botanic Gardens: Toowong).
• Briggs J.D. and Leigh J.H. (1996) Rare or Threatened Australian Plants. CSIRO Publishing, Australia.
• Forster, P.I. (1992) A taxonomic revision of Tylophora R. Br. (Asclepiadaceae: Marsdenieae) in Australia. Australian Systematic Botany 5: 29-51.
• Forster, P.I. (1996) Asclepiadaceae. 19. Tylophora. Flora of Australia 28: 268-277, p. 269.
• Harden G.J. and Williams, J.B. (1992) Tylophora. In: Harden, G.J. (ed.). Flora of New South Wales. Vol. 3. UNSW Press, Kensington, NSW.
• Harden, G.J. and Williams, J.B. (1992) Tylophora. In Harden, G.J. (ed.) Flora of New South Wales. Volume 3 (New South Wales University Press: Sydney).
• Hosking, J.R. and James, T.A. (1998) Native and exotic flora of the North Western Slopes upstream of the junction of the Peel and Namoi Rivers, New South Wales. Cunninghamia 5(3): 721-766, p. 761.
• NSW Herbarium Records. Databased specimen records from the National Herbarium of New South Wales (Royal Botanic Gardens: Sydney).
• Porteners, M.F. (1997) Vegetation Survey of Goobang National Park. Report for the NSW National Parks and Wildlife Service. NPWS, Sydney.