Two additional Chiastocaulon species (Marchantiophyta: Plagiochilaceae) from the Wet Tropics Bioregion of north-eastern Queensland
Matt A. M. Renner
A C and Stuart Worboys B
A National Herbarium of New South Wales, Royal Botanic Gardens and Domain Trust, Mrs Macquaries Road, Sydney, NSW 2000, Australia.
B Australian Tropical Herbarium, James Cook University Cairns Campus, PO Box 6811, Cairns, Qld 4878, Australia.
C Corresponding author. Email: matt.renner@rbgsyd.nsw.gov.au
Australian Systematic Botany 31(6) 487-494 https://doi.org/10.1071/SB18014
Submitted: 19 March 2018 Accepted: 24 September 2018 Published: 13 December 2018
Abstract
Two additional species of the liverwort genus Chiastocaulon Carl, namely, C. fasciculatum M.A.M.Renner sp. nov. and C. pachycephalum (De Not.) Herzog, are reported from two mountain tops in the north of the Queensland Wet Tropics Bioregion, namely, Mount Finnigan and Thornton Peak. Given the recent completion of a revision for Chiastocaulon in Australia, the new species provides another cogent demonstration that the bryophyte flora of the Wet Tropics Bioregion is incompletely explored and documented. The new species Chiastocaulon fasciculatum is similar to C. dendroides (Nees) Carl, but can be distinguished by leaf shape and dentition, among other characters. The leaves of C. fasciculatum are ovate and bear two or three prominent equally sized teeth, and the ventral leaf margin bears two to eight smaller teeth, whereas the leaves of C. dendroides are elliptic and bear two unequally sized teeth, the postical of which is largest, and the ventral leaf margin is entire. Chiastocaulon fasciculatum, as far as currently known, is endemic to the Wet Tropics Bioregion. Chiastocaulon pachycephalum, of which the type is from Borneo, is reported for Australia for the first time from specimens collected on Mount Finnigan.
References
Brown EA, Renner MAM (2014) The genus Acromastigum in Australia. Telopea 17, 251–293.| The genus Acromastigum in Australia.Crossref | GoogleScholarGoogle Scholar |
Cairns A, Meagher D (2014) Clastobryophilum (Bryophyta: Sematophyllaceae) new to the Australian flora. Telopea 17, 233–237.
| Clastobryophilum (Bryophyta: Sematophyllaceae) new to the Australian flora.Crossref | GoogleScholarGoogle Scholar |
Devos N, Renner MAM, Gradstein SR, Shaw AJ, Vanderpoorten A (2011) Molecular data challenge traditional subgeneric divisions in the leafy liverwort genus Radula. Taxon 60, 1623–1632.
Gradstein SR (1975) A taxonomic monograph of the genus Acrolejeunea (Hepaticae). Bryophytorum Bibliotheca 4, 1–162.
Groth H, Heinrichs J (2003) Reinstatement of Chiastocaulon Carl (Plagiochilaceae) based on evidence from nuclear ribosomal ITS and chloroplast gene rps4 sequences. Plant Biology 5, 615–622.
| Reinstatement of Chiastocaulon Carl (Plagiochilaceae) based on evidence from nuclear ribosomal ITS and chloroplast gene rps4 sequences.Crossref | GoogleScholarGoogle Scholar |
Herzog T (1950) Hepaticae Borneenses (Oxford University Expedition to Sarawak. 1932). With introductory ecological notes by P.W. Richards. Transactions of the British Bryological Society 1, 275–326.
| Hepaticae Borneenses (Oxford University Expedition to Sarawak. 1932). With introductory ecological notes by P.W. Richards.Crossref | GoogleScholarGoogle Scholar |
Inoue H (1964) The genus Plagiochilion. The Journal of the Hattori Botanical Laboratory 27, 52–72.
Inoue H (1982) Speciation and distribution of Plagiochila in Australasia and the Pacific. The Journal of the Hattori Botanical Laboratory 52, 45–72.
Inoue H (1984) ‘The Genus Plagiochila (Dum.) Dum. in Southeast Asia.’ (Academia Scientific Book Inc.: Tokyo, Japan)
Meagher D, Cairns A (2014) Entodontopsis (Bryophyta: Stereophyllaceae) new to the Australian flora. Telopea 17, 295–301.
| Entodontopsis (Bryophyta: Stereophyllaceae) new to the Australian flora.Crossref | GoogleScholarGoogle Scholar |
Meagher D, Cairns A (2016) Meteoriopsis undulata Horik. & Nog. (Bryophyta: Meteoriaceae) new to the Australian flora. Telopea 19, 37–44.
Patzak SDF, Renner MAM, Schäfer-Verwimp A, Feldberg K, Heslewood MM, Peralta DF, Souza A, Schneider H, Heinrichs J (2016) A phylogeny of Lophocoleaceae–Plagiochilaceae–Brevianthaceae and a revised classification of Plagiochilaceae. Organisms, Diversity & Evolution 16, 481–495.
| A phylogeny of Lophocoleaceae–Plagiochilaceae–Brevianthaceae and a revised classification of Plagiochilaceae.Crossref | GoogleScholarGoogle Scholar |
Ramsay H, Cairns A, Meagher D (2017) Macromitrium erythrocomum (Bryophyta: Orthotrichaceae), a new species from tropical Queensland, Australia. Telopea 20, 261–268.
Renner MAM (2013) A new subspecies of Acrolejeunea arcuata, and notes on typification, synonymy, and distribution of other Australasian Lejeuneaceae. Phytotaxa 83, 39–53.
| A new subspecies of Acrolejeunea arcuata, and notes on typification, synonymy, and distribution of other Australasian Lejeuneaceae.Crossref | GoogleScholarGoogle Scholar |
Renner MAM, Wilson TC (2018) Two new Acromastigum species (Lepidoziaceae: Jungermanniopsida) from Queensland. Telopea 21, 45–55.
| Two new Acromastigum species (Lepidoziaceae: Jungermanniopsida) from Queensland.Crossref | GoogleScholarGoogle Scholar |
Renner MAM, Devos N, Brown EA, von Konrat M (2013) New records, replacements, reinstatements and four new species in the Radula parvitexta and R. ventricosa species groups (Jungermanniopsida) in Australia: cases of mistaken identity. Australian Systematic Botany 26, 298–345.
| New records, replacements, reinstatements and four new species in the Radula parvitexta and R. ventricosa species groups (Jungermanniopsida) in Australia: cases of mistaken identity.Crossref | GoogleScholarGoogle Scholar |
Renner MAM, Heslewood MM, Patzak SDF, Schäfer-Verwimp A, Heinrichs J (2016) The genera Chiastocaulon, Cryptoplagiochila and Pedinophyllum (Plagiochilaceae) in Australia. Australian Systematic Botany 29, 358–402.
| The genera Chiastocaulon, Cryptoplagiochila and Pedinophyllum (Plagiochilaceae) in Australia.Crossref | GoogleScholarGoogle Scholar |
Stearn WT (1998) ‘Botanical Latin’, 4th edn. (David and Charles Publishers: Newton Abbot UK)
