AUS SA AMLR Endemism Life History Pre-1983 AMLR filtered records indicate a wider historic distribution across the central MLR from Mount - E E - Perennial Crawford to Mount Bold.4
Family OSMUNDACEAE Other known populations occur (no official records exist) at Black Hill CP (2 plants only), Scott Creek, Summertown (12 plants), Sturt Gorge, Cleland, Eagle Mountain Bike Park, Giles/Horsnell Gully, Magic Valley, Deep Creek and Basket Range (K. Brewer and J. Smith pers. comm.).
Habitat Recorded habitat in the AMLR includes swamps, swampy gullies and creekbeds.6 All extant populations occur adjacent to permanent water, springs or soaks. Habitat is typically shrubland of Leptospermum lanigerum and Acacia provincialis over sedges and ferns including Gahnia sieberiana, Baumea tetragona and Blechnum spp. Permanent water/seepage is the principal limiting factor underpinning its distribution (T. Jury pers. comm.).
Within the AMLR the preferred broad vegetation groups are Heathy Open Forest and Wetland.4
Within the AMLR the species’ degree of habitat 4 Photo: © Ann Prescott specialisation is classified as ‘Very High’.
Conservation Significance Biology and Ecology In SA, the majority of the distribution is confined within Establishes via fine spores which disperse long the AMLR, disjunct from the remaining extant distances. Fire will kill plants.5 distribution in other States. Within the AMLR the species’ relative area of occupancy is classified as Aboriginal Significance ‘Extremely Restricted’. Relative to all AMLR extant Post-1983 records indicate the entire AMLR distribution species, the species' taxonomic uniqueness is occurs in Kaurna Nation (bordering Peramangk classified as ‘Very High’.4 Nation).4
Description Threats Fern with short rhizome. Erect, to 30 cm tall (in SA); Threats include access of livestock to watercourses fronds to 2 m long, clustered at the top of the and wetlands, flood scouring, overgrowth of rhizome.3 understorey, weeds (Broom, Blackberry, Arundo), altered water regimes and management, drought and Distribution and Population Phytophthora (K. Brewer and J. Smith pers. comm.).6,7 Also occurs in QLD, NSW, VIC, TAS and ACT.1,2 Very limited within the AMLR region, however the Within SA, only occurs in the AMLR region. Records for majority of known distribution occurs within 2 km of KI are questionable.7 Approximately 500 plants known confirmed or suspected Phytophthora infestations.4 in SA. More common in eastern Australia.7 Additional current direct threats have been identified Post-1983 AMLR filtered records restricted to Cleland and rated for this species. Refer to the main plan CP.4 accompanying these profiles.
Further information: Biodiversity Conservation Unit, Adelaide Region Phone: (61 8) 8336 0901 Fax: (61 8) 8336 0999 http://www.environment.sa.gov.au/ Department for Environment and Heritage FIS 90346 May 2008 Prepared as part of the Regional Recovery Plan for Threatened Species and Ecological Communities of Adelaide and the Mount Lofty Ranges, South Australia 2009 - 2014
Regional Distribution
Map based on filtered post-1983 records.4 Note, this map does not necessarily represent the actual species’ distribution within the AMLR.
References Note: In some cases original reference sources are not included in this list, however they can be obtained from the reference from which the information has been sourced (the reference cited in superscript).
1 Barker, W. R., Barker, R. M., Jessop, J. P. and Vonow, H. P., eds. (2005). Census of South Australian Vascular Plants, 5th Edition. Botanic Gardens of Adelaide & State Herbarium, Adelaide.
2 Council of Heads of Australian Herbaria (2002). Australia's Virtual Herbarium. Available from http://www.flora.sa.gov.au/avh/ (accessed July 2007).
3 Department for Environment and Heritage Electronic Flora of South Australia species Fact Sheet: Todea barbara (L.) T. Moore. Available from http://www.flora.sa.gov.au (accessed September 2007).
4 Department for Environment and Heritage (2007). Adelaide and Mount Lofty Ranges Regional Recovery Pilot Project Database. Unpublished data extracted and edited from BDBSA, SA Herbarium (July 2007) and other sources.
5 Department for Environment and Heritage (2007). Combined Fire Response Database. Unpublished data, extracted September 2007.
6 Department for Environment and Heritage (2007). State Herbarium of South Australia Database. Unpublished data, extracted October 2007.
7 Department for Environment and Heritage. (2007). Summary of two Wetland Threatened Flora Workshops (unpublished spreadsheet).
Further information: Biodiversity Conservation Unit, Adelaide Region Phone: (61 8) 8336 0901 Fax: (61 8) 8336 0999 http://www.environment.sa.gov.au/ Department for Environment and Heritage FIS 90346 May 2008 Prepared as part of the Regional Recovery Plan for Threatened Species and Ecological Communities of Adelaide and the Mount Lofty Ranges, South Australia 2009 - 2014