Species profile—Marsdenia pumila
Classification
Plantae (plants) → Equisetopsida (land plants) → Apocynaceae → Marsdenia pumila
Sighting data
Species details
- Kingdom
- Plantae (plants)
- Class
- Equisetopsida (land plants)
- Family
- Apocynaceae
- Scientific name
- Marsdenia pumila P.I.Forst.
- WildNet taxon ID
- 7097
- Superseded by
- Leichhardtia pumila (04/06/2021)
- Conservation significant
- No
- Confidential
- No
- Endemicity
- Exotic
- Pest status
- Nil
- Short Notes
- two sheets plus spirit, status annotated by author
- Description
- Marsdenia pumila is a small wiry vine, with white latex and colourless hairs. Roots are tuberous. Stems are cylindrical, up to 1 mm in diameter, with scattered to sparse trichomes. Internodes up to 5 cm long. Leaves are petiolate. The leaf blade is linear to linear-lanceolate, up to 95 mm long and 3 mm wide, discolorous, venation obscure. The upper lamina surface is dark glossy green, glabrous; the lower surface is pale green and glabrous. The tip is acute; the base cordate; the petiole grooved along the top, 1.3 mm long and 0.5-0.7 mm in diameter, with scattered trichomes. There are 2 substrate colleters at the lamina base. Inflorescences are umbelliform, up to 1cm long. Peduncle 5-7 mm long with scattered trichomes. Flowers are 6mm long, 2-2.3 mm in diameter; pedicels 3-4 mm long. Sepals lanceolate, 1.8-2 mm long, 0.8-1 mm wide, with sparse trichomes. Corolla urceolate-salverform, pale green in colour. The corolla tube is 4-4.5 mm long, 2-2.3 mm in diameter. Corolla lobes more or less orbicular to ovate, thin, erect, 1.2-1.4 mm long and 1.3-1.4 mm wide, glabrous, tipped with pink. Corolline corona present and comprising 5 ridges of antrorse hairs alternate to the lobes. Staminal corona of 5 narrowly ovate lobes shorter than staminal columns, entire, adnate at base. Style-head conical-elongate. The fruit has not been seen (Forster, 1995; Forster, 1996).
Marsdenia pumila is superficially similar to M. australis, particularly in the urceolate-salverform flower and linear-lanceolate foliage, but otherwise differs from that species in many characters. Some examples include; Marsdenia pumila has discolorous foliage, more slender petioles, peduncles and pedicels, lanceolate sepals and smaller flowers with a narrower tube (Forster, 1995). - Map
- View Map
- Distribution
- Marsdenia pumila has only been recorded in one location, in the South Kennedy District, 78 km from Collinsville (Forster, 1995; Queensland Herbarium, 2011).
- Distributional limits
- -21.1711111, 147.6683333
-21.1711112, 147.6683334 - Range derivation
- Range derived from extent of the taxon's verified records
- Habitat
- Marsdenia pumila is only known from one locality, growing amongst grass tussocks on low ridges of laterised conglomerate rocks with low eucalypt woodland. Associated species include Corymbia leichhardtii, C. trachyphloia, Lysicarpus angustifolius and Acacia shirleyi as canopy dominants (Forster, 1995).
- Reproduction
- Flowering of Marsdenia pumila occurs from February to March; probably fruiting 3-4 months later (Forster, 1995; Queensland Herbarium, 2011)
- Threatening processes
- The species only occurs at one locality and it is potentially threatened by fire, grazing, clearing or a stochastic event.
- Status notes
- Marsdenia pumila is listed as Vulnerable under the Queensland Nature Conservation Act 1992. The only known locality for Marsdenia pumila is little explored botanically and plants of this species are very inconspicuous when in flower. Hence the species could be found at other locations than the known single collection (Forster, 1995).
- Management recommendations
- There are no listed management recommendations for Marsdenia pumila. However further surveying of this poorly known area has been recommended (Forster, 1995).
- Notes
- Occurs in the following Queensland pastoral district: South Kennedy (Bostock and Holland, 2010).
- References
- Forster, P.I. (1995). Circumscription of Marsdenia (Asclepiadaceae: Marsdenieae), with a revision of the genus in Australia and Papuasia. Australian Systematic Botany 8 (5): 780-781.
Forster, P.I. in Orchard, A.E. (Ed) (1996). Flora of Australia 28: 263-265.
Queensland Herbarium (2011). Specimen label information, in BriMapper version 3.5.3. Queensland Herbarium. Accessed 21/07/2011. - Profile author
- Lynise Wearne (22/12/2011)
Other resources
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=7097.
This information is sourced from the WildNet database managed by the Queensland Department of Environment and Science.
