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Species profile—Marsdenia paludicola

Classification

Plantae (plants) → Equisetopsida (land plants) → ApocynaceaeMarsdenia paludicola

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Species details

Kingdom
Plantae (plants)
Class
Equisetopsida (land plants)
Family
Apocynaceae
Scientific name
Marsdenia paludicola P.I.Forst.
WildNet taxon ID
8822
Nature Conservation Act 1992 (NCA) status
Vulnerable
Environment Protection and Biodiversity Conservation Act 1999 (EPBC) status
Vulnerable
Back on Track (BoT) status
Low
Conservation significant
Yes
Confidential
No
Endemicity
Native
Pest status
Nil
Short Notes
status annotated by author
Description
Marsdenia paludicola is a woody vine up to 10 m long. The latex is white. The plant has an indumentum of clear to yellow trichomes. The roots are fibrous. The stems are cylindrical, with dense velutinous trichomes when young, becoming ridged and corky with age. Internodes up to 150 mm long and 5 mm in diameter. The leaves are petiolate. The lamina is elliptic, up to 19 mm long and 8 mm wide, discolorous, venation comprising 10 or 11 lateral veins on each side of the midrib. The upper lamina surface is dark glossy green and glabrous, the venation faintly visible; the lower surface is pale cream-green to purple, with sparse to dense velutinous trichomes and a prominent venation. The tip is acute; the base cordate; the petiole grooved along the top, 11 to 55 mm long and 3mm in diameter, with dense velutinous trichomes. There are 10 to 13 substrate colleters at the lamina base. The inflorescences are racemiform, up to 15 mm long. The peduncle is 8 to 15 mm long and 1.5 to 3.5 mm in diameter, with dense velutinous trichomes. The flowers are 9 to 14 mm long by 10 to 17 mm in diameter;. The pedicels are 6 to 9 mm long. The corolla is campanulate and cream in colour. The corolla tube is 5 mm long by 4 to 4.5 mm in diameter, glabrous internally apart from scattered trichomes at the tube mouth. Corolline corona absent. Staminal corona of 5 oblong lobes shorter than staminal columns, cream in colour and entire. Style-head elongate-rostrate. The fruit is fusiform-ovoid, 200 mm long and 50 mm in diameter. Seeds have not been seen (Forster, 1995; Forster, 1996).
Marsdenia hemiptera is closely related to the poorly known M. araujacea but differs markedly from that species in the softly velutinous foliage, the absence of a corolline corona, the oblong-obtuse portion of its staminal corona lobes and its elongate-rostrate style-head (Forster, 1995).
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Distribution
Marsdenia paludicola is known from 6 records from north-eastern Cape York Peninsula, Queensland. Locations include Wasp Gully, Maloneys Springs, Camp Scrub, Mount Tozer and Hann Creek on the Glennie Tableland. The species is uncommon at Glennie Tableland. The Mount Tozer population is reserved in Iron Range National Park. The Glennie Tableland populations occur on unallocated State land (formerly Bromley Holding) (Queensland Herbarium, 2011; DSEWPC, 2012).
Distributional limits
-12.3590528, 142.9261203
-12.5901607, 143.2094497
Range derivation
Range derived from extent of the taxon's verified records
Habitat
Marsdenia paludicola grows in notophyll vineforest on strongly acidic soil in narrow gorges surrounded by sandstone cliffs (Forster, 1995; Queensland Herbarium, 2011).
Reproduction
Flowering in Marsdenia paludicola occurs in December, fruiting three to six months later (Forster, 1995; Forster, 1996).
Threatening processes
The main identified threats to Marsdenia paludicola include inappropriate fire regimes and potential for localised visitor or settlement pressure (Landsberg and Clarkson, 2004). The Glennie Tableland swamp site was damaged by major wildfire in 1993. In 1991, habitat was found to have been disturbed by geological survey activity (Forster, 1995).
Status notes
Marsdenia paludicola is listed as Vulnerable under the Environment Protection and Biodiversity Conservation Act 1999 and Vulnerable under the Queensland Nature Conservation Act 1992.
Management documents
Department of Sustainability, Environment, Water, Population and Communities (DSEWPC) (2008). Marsdenia paludicola in Species Profile and Threats Database, Department of Sustainability, Environment, Water, Population and Communities
Management recommendations
Regional and local priority actions to support the recovery of Marsdenia paludicola are listed in DSEWPC (2012). These actions focus on four main areas which include: avoid habitat loss, disturbance and modification (e.g. monitor known populations for key threats and progress of recovery); manage fire (e.g. develop and implement a suitable fire strategy, provide maps of known occurrences to local and regional fire services); increase conservation information (e.g. raise awareness of the species in the local community, maintain liaisons with private landholders where the species occurs); enable recovery of additional sites and/or populations (e.g. undertake seed storage and seed collection, investigate options for linking, enhancing existing populations, implement national translocation protocols).
There are also research priorities which could help to provide further knowledge on the species, these include: design and implement monitoring programs; additional work on population size, distribution, ecological requirements; survey work of habitat and potential habitat requirements; undertake seed germination and propagation research (DSEWPC, 2012)
Notes
Occurs in the following Queensland pastoral district: Cook (Bostock and Holland, 2010).
References
Department of Sustainability, Environment, Water, Population and Communities (DSEWPC) (2012). Marsdenia paludicola in Species Profile and Threats Database, Department of Sustainability, Environment, Water, Population and Communities, Canberra. Accessed 22/12/2011. http://www.environment.gov.au/sprat.
Forster, P.I. (1995). Circumscription of Marsdenia (Asclepiadaceae: Marsdenieae), with a revision of the genus in Australia and Papuasia. Australian Systematic Botany 8 (5): 734.
Forster, P.I. in Orchard, A.E. (Ed) (1996). Flora of Australia 28: 258.
Landsberg, J. and Clarkson, J. (2004). Threatened plants of the Cape York Peninsula: A report to the Australian Government Department of the Environment and Heritage, Queensland Parks and Wildlife Service.
Queensland Herbarium (2011). Specimen label information. Queensland Herbarium. Accessed 21/07/2011.
Profile author
Lynise Wearne (10/07/2012)

Other resources

Species Profile and Threats Database (SPRAT)
The Australasian Virtual Herbarium (AVH)
Atlas of Living Australia

Data source

This profile data is sourced from the QLD Wildlife Data API using the Get species by ID function used under CC-By 4.0
https://apps.des.qld.gov.au/species/?op=getspeciesbyid&taxonid=8822

This information is sourced from the WildNet database managed by the Queensland Department of Environment and Science.

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Licence
Creative Commons Attribution 4.0 International (CC BY 4.0)
Last updated
23 October 2019
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