A new species of <i>Tribonanthes</i> (Haemodoraceae) from saline wetland margins in Western Australia

Lyons, Michael N; Keighery, Gregory John

doi:10.58828/nuy00424

Cited by 2 publications

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“…This was a diminutive species, growing barely more than 3-5 cm tall, the smallest of any Haemodoraceae known. Four years later, in 2002, Mike Lyons collected this same undescribed species from near Pingrup and Lake King (Lyons & Keighery 2006), and it was named T. minor M.Lyons & Keighery.…”

Section: Taxonomic Historymentioning

confidence: 99%

“…Currently listed as Priority Three under Conservation Codes for Western Australian Flora (Smith & Jones 2018). Due to its preference for low elevations on the margins of naturally saline lakes T. minor is under threat from increased risk of flooding associated with changes in catchment hydrology following agricultural clearing (Lyons & Keighery 2006;Smith & Jones 2018).…”

Section: Tribonanthes Minormentioning

confidence: 99%

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A revision of the tiurndins (Tribonanthes, Haemodoraceae)

Hickman¹

2019

Nuytsia

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Hickman, E.J. & Hopper, S.D. A revision of the tiurndins (Tribonanthes, Haemodoraceae). Nuytsia 30: 87-154 (2019). The tiurndins (Tribonanthes Endl.) comprise a small taxonomically challenging genus of geophytes endemic to the Southwest Australian Floristic Region. Six named and one undescribed species of Tribonanthes are recognised in recent literature. Tribonanthes poses the most difficult taxonomic problems remaining for the Haemodoraceae in Western Australia. It is a genus where herbarium studies alone are insufficient to delineate taxa. A knowledge of variation in wild living material has proved essential to resolve taxonomic difficulties in the tiurndins. This revision recognises and comprehensively illustrates living plants of the 12 recognised species, four of which are new (T. elongata E.

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Section: Taxonomic Historymentioning

confidence: 99%

Section: Tribonanthes Minormentioning

confidence: 99%

A revision of the tiurndins (Tribonanthes, Haemodoraceae)

Hickman¹

2019

Nuytsia

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Vegetative Anatomy of the Haemodoraceae and Its Phylogenetic Significance

Aerne-Hains

Simpson

2017

International Journal of Plant Sciences

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Premise of research. Haemodoraceae are a relatively small monocot family consisting of 14 genera and approximately 108 species and are distributed in parts of Australia, southern Africa, South and Central America, and eastern North America. The family is divided into two subfamilies, Haemodoroideae and Conostylidoideae. This research focuses on the vegetative anatomy of the family, with an emphasis on leaf anatomical features. The aims of this project are (1) to acquire new vegetative anatomical data for a large selection of Haemodoraceae and (2) to evaluate these data in the context of both phylogenetic relationships and environmental factors. Methodology. Cross sections of roots, stems (scapes), or leaves of 60 species and 63 ranked taxa from all 14 genera of the family were prepared and stained using standard histological methods, and SEMs were made of the leaf surface. Line drawings were prepared of leaf cross sections of an exemplar of each genus. Tissues and cells were examined and photographed, and comparisons were made among taxa. For leaf epidermal cells, the ratio of cell wall transectional area∶cell transectional area was calculated and plotted. Several discrete anatomical characters and character states were defined and plotted on a recently derived cladogram and examined for phylogenetic signal. Correlation of certain anatomical features with environmental factors was also noted. Pivotal results. Leaf anatomy provides several phylogenetically informative traits, including bulliform cells, tannin cells, marginal fiber caps, the relative wall transectional area of epidermal cells, the morphology of palisade cells, the distribution of fibers in the vascular bundle, leaf aerenchyma, mucilage cells, and silica bodies. These features generally correlate significantly with the pattern of phylogenetic relationships in the family. Silica cells, tannin cells, and mucilage cells, all of which may function to deter herbivory, are generally restricted to particular clades. The relative epidermal wall thickness of members of the genus Conostylis is significantly higher than in other members of the family, a feature that may represent an adaptation to their hot, dry environments. Conclusions. The systematic and ecological value of studying plant vegetative anatomy is supported by this study. Vegetative anatomical features of the Haemodoraceae show considerable and significant variation. Numerous anatomical features exhibit a high phylogenetic signal and are apomorphic for specific clades. Some anatomical features are possible adaptations to habitat, climate, or herbivory. However, quantifiable ecological data are needed in future studies for assessing the adaptive significance of these anatomical features.

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A new species of Tribonanthes (Haemodoraceae) from saline wetland margins in Western Australia

Cited by 2 publications

References 0 publications

A revision of the tiurndins (Tribonanthes, Haemodoraceae)

A revision of the tiurndins (Tribonanthes, Haemodoraceae)

Vegetative Anatomy of the Haemodoraceae and Its Phylogenetic Significance

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