Topic
Xanthostemon
About: Xanthostemon is a research topic. Over the lifetime, 16 publications have been published within this topic receiving 183 citations.
Papers
TL;DR: The genus Tristania is reviewed, with particular emphasis on the Australian species, on the basis of morphological and anatomical evidence and, as a result, into five genera, with one new species described and 33 new combinations made.
Abstract: The genus Tristania is reviewed, with particular emphasis on the Australian species, on the basis of morphological and anatomical evidence and, as a result, divided into five genera. The genus Tristania R.Br. em. Schott is monotypic, the genera Welchiodendron and Ristantia are newly described and Lophostemon Schott and Tristaniopsis Brongn. & Gris are reinstated from synonymy. One new species, Tristaniopsis collina, is described and 33 new combinations made: Welchiodendron longivalve, Ristantia pachysperma, Lophostemon confertus, L. grandijlorus ssp. grandiflorus and ssp. riparius, L. Iactifluus, L. suaveolens, Tristaniopsis anomala, T. beccarii, T. bilocularis, T. burmanica, T. clementis, T. decorticata, T. elliptica, T. exiliflora, T. ferruginea, T.fruticosa, T. grandifolia, T. laurina, T. littoralis, T. macrosperma, T. merguensis, T. micrantha, T. oblongifolia, T. obovata, T. oreophila, T.pentandra, T. polyandra, T.pontianensis, T. razakiana, T. rufescens, T, stellata and T. whiteana. Two further species, Tristania psidioides and Tristania umbrosa, are transferred to Xanthostemon.
32 citations
TL;DR: Physiological profiles suggest a different cause of rarity for each species, including Archidendron kanisii, which is in the process of expanding its range and Gardenia ovularis, which grows in a range of environments, although naturally found in riparian rainforest.
31 citations
TL;DR: The anatomy of the barks of 61 species of the tribe Leptospermoideae of the family Myrtaceae, principally from Australia, has been studied and a key for the identification of the species and/or groups of species described has been derived from the bark anatomy.
Abstract: The anatomy of the barks of 61 species of the tribe Leptospermoideae of the family Myrtaceae, principally from Australia, has been studied. The following anatomical features in particular have been described: type and arrangement of sclerenchyma, type and distribution of crystals, silica, oil glands, sieve tube type, fibre dimensions, periderm, and rhytidome. A key for the identification of the species and/or groups of species described has been derived from the bark anatomy. The bark anatomy would appear to be superior to the wood anatomy for the separation of the species of the tribe. The relationship between the bark anatomy and the taxonomy of the tribe is discussed. Support for the separation of Choricarpia subargentea and C. leptopetala from both Syncarpia and Tristania is given. Tristania neriifolia appears to be distinctly different from other Tristania spp. and re-examination of the species is suggested. Samples of Metrosideros sp. from Indonesia have been found to have the characteristics of Xanthostemon and re-examination of the genus of this species is also suggested. Oil glands have been found to be restricted to the genera Eucalyptus, Syncarpia, and Xanthostemon. Resorption of crystals has been found in the outer phloem of a number of species. Casparian thickening of the cell walls of the suberized phellem in Callistemon and Melaleuca has been confirmed.
27 citations
Journal Article•
TL;DR: A critical examination of reproductive features of Arillastrum Panch leads to the conclusion that this genus, notwithstanding its narrow petal bases, is most nearly related to the genera comprising Niedenzu’s subtribe Eucalyptinae.
Abstract: Niedenzu (in E. & P., Nat. Pfl. Fam. 3, 7, 1893, 87—89) included the following genera in his subtribe Metrosiderinae: Metrosideros, Spermolepis2 (= Arillastrum), Cloezia, Lysicarpus, Tepualia, Syncarpia, Xanthostemon, Pleurocalyptus, and Tristania. The Metrosiderinae was distinguished from the Leptosperminae by usually having flowers in axillary groups, not solitary, and from the Eucalyptinae by having narrow, not broad based petals. A preliminary survey of the above genera indicates that Niedenzu’s subtribe Metrosiderinae is not a natural group and in this paper, the first of a series, a critical examination of reproductive features of Arillastrum Panch. ex Baillon leads to the conclusion that this genus, notwithstanding its narrow petal bases, is most nearly related to the genera comprising Niedenzu’s subtribe Eucalyptinae.
24 citations
TL;DR: A new species of Eucalyptopsis, E. alauda, is described from the Papuan Islands region of New Guinea and Eugenia racemoides Greves is conspecific with Xanthostemon brachyandrus C. White, necessitating a new name in Lindsayomyrtus.
Abstract: Acmena brassii, a new species from Mt Wilhelm in New Guinea, is described and distinguished from its Papuasian congeners. A new species of Eucalyptopsis, E. alauda, is described from the Papuan Islands region of New Guinea. Eugenia racemoides Greves is conspecific with Xanthostemon brachyandrus C. White, necessitating a new name in Lindsayomyrtus.
14 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2020 | 1 |
| 2018 | 2 |
| 2010 | 1 |
| 2007 | 1 |
| 2006 | 1 |
| 2003 | 1 |