Territory Stories

Plant species and sites of botanical significance in the southern bioregions of the Northern Territory



Plant species and sites of botanical significance in the southern bioregions of the Northern Territory

Other title

Matthew White ... [et al.]


White, Matthew; Albrecht, David; Duguid, Angus W.; Latz, Peter; Hamilton, Mary


E-Publications; PublicationNT; E-Books




Made available via the Publications (Legal Deposit) Act 2004 (NT).; This report provides a benchmark for the conservation status of botanical values in the southern, predominantly arid part of the Northern Territory. It will have many and varied uses, providing information about conservation values to land holders and managers as well as government departments and conservation groups.

Table of contents

Volume 1 : Significant vascular plants -- Volume 2 : Significant sites




Plants -- Northern Territory -- Alice Springs Region; Northern Territory -- Alice Springs Region

Publisher name

Arid Lands Environment Centre

Place of publication

Alice Springs (N.T.)


2 v. : maps ; 30 cm.

File type



0724527842 (v. 1); 0724527850 (v. 2)

Copyright owner

Check within Publication or with content Publisher.

Parent handle


Citation address


Related items

https://hdl.handle.net/10070/601264; https://hdl.handle.net/10070/601266; https://hdl.handle.net/10070/601268

Page content

Volume 2, Part 2, page 54 Burt Plain Site: 23-3-3 Mount Hay Level of significance: national Location: 23 26' S 133 7' E; ca. 75 km north west of Alice Springs. Area: 562 km2 Map sheet: Hermannsburg SF 53-13 Bioregion: Burt Plain (BRT) Tenure: Pastoral Lease - Hamilton Downs Station (39% of site) and Amburla Station (60% of site) Description: This site is centred on Mount Hay, a large isolated range on the northern side of the Macdonnell Ranges composed of granulite. This parent material has weathered to form deep brown, nutrient rich clay soils on parts of the surrounding plains. These alluvial soils occur mainly to the north of the range and the site is largely delineated by their extent. The rich clay soils on these alluvial plains have a more distinctive flora than the mountain after which the site is named. Mount Hay is one of several outliers of the nearby MacDonnell ranges bioregion and supports some species that are characteristic of the MacDonnell Ranges such as Macrozamia macdonnellii. Notes: This area of heavy clay soil is isolated by sandy or rocky environments from the main areas of clay soil in the east (Channel Country bioregion), north east (Mitchell Grass Downs bioregion) and in the far south (Stony Plains bioregion) of the study area. As such it is an important area for range disjunctions and supports one or possibly two endemic plant taxa: Ptilotus aristatus var. stenophyllus and Ptilotus aristatus var. exilis (see note in volume one of this report). Criteria satisfied: A1 b i), B1 b1 i) Taxa of Australian significance: Ixiochlamys integerrima {3K [W]}, Macrozamia macdonnellii {3VCa}, Ptilotus aristatus var. exilis {2R [SE]}, Ptilotus aristatus var. stenophyllus {2R [NSEW] endemic to/only known from this site}, Samolus eremaeus {3KC-} Taxa of NT significance: Calotis cuneifolia {3k}, Heliotropium inexplicitum {3k only known in BRT from this site}, Sida goniocarpa {3r}, Vittadinia pterochaeta {3r only known in BRT from this site} Taxa of Southern NT (study area) significance: none Taxa of bioregional significance: Acacia salicina {BRT (disjunct) [W]}, Actinobole uliginosum {BRT (northern range limit) [N] only known in BRT from this site}, Boerhavia paludosa {BRT (disjunct)}, Desmodium campylocaulon {BRT (disjunct)}, Glycine falcata {BRT (disjunct)}, Iseilema macratherum {BRT (disjunct and apparently rare) only known in BRT from this site}, Myoporum acuminatum {BRT (disjunct)}, Neobassia proceriflora {BRT (disjunct)}, Sclerolaena calcarata {BRT (disjunct)} Other taxa only known in BRT bioregion from this site: Prostanthera sericea {[N]}, Solanum eardleyae {[N]}, Zygophyllum emarginatum Type locations of the following were collected from the site: Ptilotus aristatus var. exilis (1962), Ptilotus aristatus var. stenophyllus (1974) Vegetation Map Units (mapped as occurring at the site on the 1:1000,000 NT Vegetation Survey Map): Map unit 96 (32 %): Astrebla pectinata (Barley Mitchell grass) grassland. Map unit 70 (32 %): Acacia aneura (Mulga) tall sparse-shrubland with Senna, Eremophila (Fuchsia) low sparse-shrubland understorey. Map unit 65 (17 %): Acacia aneura (Mulga) tall open-shrubland with Eragrostis eriopoda (Woolybutt) open-grassland understorey. Map unit 59 (17 %): Acacia estrophiolata (Ironwood), Atalaya hemiglauca (Whitewood) low open-woodland with open-grassland understorey.