Polianthion, a new genus of Rhamnaceae (Pomaderreae) from Western Australia and Queensland
Jürgen Kellermann A B E , Barbara L. Rye C and Kevin R. Thiele DA National Herbarium of Victoria, Royal Botanic Gardens Melbourne, Birdwood Avenue, South Yarra, Vic. 3141, Australia.
B School of Botany, The University of Melbourne, Vic. 3010, Australia.
C Western Australian Herbarium, Department of Conservation and Land Management, Locked Bag 104, Bentley Delivery Centre, WA 6983, Australia.
D Australian National Herbarium, Centre for Plant Biodiversity Research, GPO Box 1600, Canberra, ACT 2601, Australia.
E Corresponding author. Email: juergen.kellermann@rbg.vic.gov.au
Australian Systematic Botany 19(2) 169-181 https://doi.org/10.1071/SB05027
Submitted: 16 September 2005 Accepted: 2 February 2006 Published: 28 April 2006
Abstract
Recent phylogenetic studies have revealed that four species of Australian Rhamnaceae, tribe Pomaderreae Reissek ex Endl., should be assigned to a new genus. This paper describes Polianthion K.R.Thiele, including one new species, P. collinum Rye, and makes the relevant combinations for P. bilocularis (A.S.George) Kellermann, P. wichurae (Nees ex Reissek) K.R.Thiele and P. minutiflorum (E.M.Ross) K.R.Thiele. The genus is defined by having two carpels, a characteristic dense stellate indumentum on both vegetative and floral parts of the plant, free stipules, long-pedicellate flowers and fruitlets dehiscent for their full length. Three species are found in the south-west of Western Australia and one in eastern Queensland.
Acknowledgments
We thank Tony Bean (BRI) for information on Polianthion minutiflorum. The curators of LD and MO, Ingvar Kärnefelt and Jim Solomon, respectively, provided images of type specimens of P. wichurae. Neville Walsh (MEL) commented on an earlier version of the manuscript. Simon Crawford (School of Botany, The University of Melbourne) assisted with scanning electron microscopy. The Western Australian Department of Conservation and Land Management (CALM) issued collecting permits, and Don and Joy Williams (Hi Vallee Farm) provided accommodation while collecting P. wichurae. J. Kellermann received a Melbourne Research Scholarship (MRS) from The University of Melbourne during part of this project. This paper is written in preparation of the Flora of Australia treatment of Rhamnaceae, supported by the Australian Biological Resources Study (ABRS).
Bailey, FM (1899). Rhamneae. In ‘The Queensland flora. Part 1’. pp. 265–277. (HJ Diddams & Co.: Brisbane)
Barker WR
(1995) Spyridium erymnocladum, a new species from Eyre Peninsula, South Australia, and new stipule characters in Australian Rhamnaceae. Journal of the Adelaide Botanic Gardens In press 17, 17–22.
Barker WR,
Lang PJ, Dashorst GRM
(1988) Spyridium tridentatum (Steudel) Benth. (Rhamnaceae). Journal of the Adelaide Botanic Gardens 11, 67–74.
Bean AR
(2004) New species of Cryptandra Sm. and Stenanthemum Reissek (Rhamnaceae) from northern Australia. Austrobaileya 6, 917–940.
Beard, JS (1970).
Bentham, G (1863). Rhamneae. In ‘Flora Australiensis, a description of plants of the Australian territory. Vol. 1’ pp. 409–445. (L Reeve & Co.: London)
Briggs, JD ,
and
Leigh, JH (1995).
Coates, DJ ,
Byrne, M ,
MacDonald, B ,
Hankinson, M ,
and
Ward, JM (2005).
Conn, BJ (1983). Rhamnaceae. In ‘Flowering plants in Australia’. pp. 226–227. (Rigby: Adelaide)
Diels L, Pritzel E
(1904–1905) Fragmenta Phytographiae Australiae occidentalis: Beiträge zur Kenntnis der Pflanzen Westaustraliens, ihrer Verbreitung und ihrer Lebens-Verhältnisse. Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie 35, 55–662.
Fay MF,
Lledó MD,
Richardson JE,
Rye BL, Hopper SD
(2001) Molecular data confirm the affinities of the south-west Australian endemic Granitites with Alphitonia (Rhamnaceae). Kew Bulletin 56, 669–675.
Gardner, CA (1931).
George AS
(1967) Additions to the flora of Western Australia: ten miscellaneous new species. Journal of the Royal Society of Western Australia 50, 97–104.
Green, JW (1985).
Grieve, BJ (1998). Rhamnaceae. In ‘How to know Western Australian wildflowers. Part 2’. 2nd edn pp. 580–605. (University of Western Australia Press: Perth)
Henderson, RJF (2002).
Hooker, JD (1855). [1860] Rhamneae. In ‘Flora Tasmaniae. Vol. 1’. pp. 69–78. (Reeve: London)
Kellermann J
(2006) Re-instatement of the name Spyridium waterhousei from Kangaroo Island, South Australia, with a short history of the tribe Pomaderreae (Rhamnaceae). Journal of the Adelaide Botanic Gardens In press 21,
Kellermann J,
Udovicic F, Ladiges PY
(2005) Phylogenetic analysis and generic limits of the tribe Pomaderreae (Rhamnaceae) using internal transcribed spacer DNA sequences. Taxon 53, 619–631.
Ladiges PY,
Kellermann J,
Nelson G,
Humphries CJ, Udovicic F
(2005) Historical biogeography of Australian Rhamnaceae, tribe Pomaderreae. Journal of Biogeography 32, 1909–1919.
| Crossref | GoogleScholarGoogle Scholar |
Medan D, Schirarend C
(2004) Rhamnaceae. In ‘The families and genera of vascular plants. Vol. 6’. (Ed. K Kubitzki)
pp. 320–338. (Springer: Berlin and Heidelberg)
Mueller F
(1862) Rhamnaceae. In ‘Fragmenta phytographieae Australiae. Vol. 3’. pp. 62–86. (John Ferres: Melbourne)
Mueller, F (1882).
Reissek S
(1848 (1846–1847)) Rhamneae: synopsis specierum Novae Hollandiae austro-occidentalis. In ‘Plantae Preissianae sive enumeratio plantarum quas in Australasia occidentali et meridionali-occidentali annis 1838–1841 collegit Ludovicus Preiss. Vol. 2’. (Ed. JGC Lehmann)
pp. 279–291. (Meissner: Hamburg)
Paczkowska, G ,
and
Chapman, AR (2000).
Richardson JE,
Fay MF,
Cronk QCB, Chase MW
(2000) A revision of the tribal classification of Rhamnaceae. Kew Bulletin 55, 311–340.
Ross EM
(1985) A new species of Trymalium (Rhamnaceae) from south-eastern Queensland. Austrobaileya 2, 190–191.
Rye BL
(1995a) New and priority taxa in the genera Cryptandra and Stenanthemum (Rhamnaceae) of Western Australia. Nuytsia 10, 255–305.
Rye BL
(1995b) New and priority taxa in the genera Spyridium and Trymalium (Rhamnaceae) of Western Australia. Nuytsia 10, 119–140.
Rye BL
(1996a) Granitites, a new genus of Rhamnaceae from the south-west of Western Australia. Nuytsia 10, 451–457.
Rye BL
(1996b) A synopsis of the genera Pomaderris, Siegfriedia, Spyridium and Trymalium (Rhamnaceae) in Western Australia. Nuytsia 11, 109–131.
Rye BL
(2001) A taxonomic update of Stenanthemum (Rhamnaceae: Pomaderreae) in Western Australia. Nuytsia 13, 495–507.
Thiele KR, West JG
(2004) Spyridium burragorang (Rhamnaceae), a new species from New South Wales, with new combinations for Spyridium buxifolium and Spyridium scortechinii. Telopea 10, 823–829.
Walsh NG, Coates F
(1997) New taxa, new combinations and an infrageneric classification in Pomaderris (Rhamnaceae). Muelleria 10, 27–56.
Western Australian Herbarium (1998).
