scholarly journals A review of Dendrobium kingianum Bidwill ex Lindl. (Orchidaceae) with morphological and molecularphylogenetic analyses

Telopea ◽  
2021 ◽  
Vol 24 ◽  
pp. 203-232
Author(s):  
Peter Adams

Populations of Dendrobium kingianum Bidwill ex Lindl. from near Newcastle, New South Wales to southern and central west Queensland and encompassing all regions of the distribution were studied using field observations, morphometric analysis and nrITS sequences. A total of 281 individuals were used to construct regional descriptions of D. kingianum and 139 individuals were measured for 19 morphological characters, and similarities and differences among specimens summarised using multivariate statistical methods. Patterns of morphological variation within D. kingianum are consistent with a single variable species that expresses clinal variation, with short-growing plants in the south and taller plants in the northern part of the distribution. The nrITS gene tree suggests two subgroups within D. kingianum subsp. kingianum, one comprising northern, the other southern individuals, which may overlap in the vicinity of Dorrigo, New South Wales. The disjunct D. kingianum subsp. carnarvonense Peter B. Adams in central west Queensland, which can be distinguished by a predominately subterranean habit and a narrower labellum midlobe, was resolved sister to D. moorei F.Muell., which renders D. kingianum paraphyletic in the nrITS gene tree, but this position was not supported. Regional descriptions documenting clinal variation are provided. All previously described varieties, including D. kingianum var. pulcherrimum Rupp, are colour and growth forms of D. kingianum subsp. kingianum.

2021 ◽  
Author(s):  
Ryan P. O'Donnell ◽  
Jeremy J. Bruhl ◽  
Ian R.H. Telford ◽  
Trevor C. Wilson ◽  
Heidi C. Zimmer ◽  
...  

Research into the systematics of Prostanthera has recently revealed a close evolutionary relationship among P. phylicifolia s. str., the critically endangered P. gilesii, and a population of uncertain identity from the Central Tablelands of New South Wales, Australia. Previous analyses were unable to establish whether genetic boundaries separated these taxa. This study aimed to assess the species boundaries among these three taxa using a combination of single-nucleotide polymorphisms (SNP) sampled at the population-scale and multivariate analysis of morphological characters. Non-parametric and parametric statistics, neighbour-network analysis, phylogenetic analysis, and ancestry coefficient estimates all provided support for discrete genetic differences between the three taxa. Morphological phenetic analysis identified a suite of characters that distinguished each of these taxa. This corroboration of evidence supports the presence of three independently evolving lineages. Prostanthera gilesii and P. phylicifolia s. str. are distinct species independent from the third taxon which is described here as P. volucris R.P.O'Donnell. A detailed description, diagnostic line drawings and photographs are provided. We evaluate P. volucris as satisfying criteria to be considered Critically Endangered.


Zootaxa ◽  
2020 ◽  
Vol 4832 (1) ◽  
pp. 1-75
Author(s):  
SVATOPLUK BÍLÝ ◽  
MARK HANLON

Taxonomic revision of the genus Bubastes Laporte & Gory, 1836. Thirteen new species are described: Bubastes barkeri sp. nov. (New South Wales, Queensland, Victoria), B. deserta sp. nov. (South Australia), B. dichroa sp. nov. (Western Australia), B. flavocaerulea sp. nov. (New South Wales, Queensland), B. hasenpuschi sp. nov. (Queensland), B. iridiventris sp. nov. (Western Australia), B. iris sp. nov. (Western Australia), B. macmillani sp. nov. (Western Australia), B. magnifica sp. nov. (Queensland, New South Wales), B. michaelpowelli sp. nov. (Western Australia), B. pilbarensis sp. nov. (Western Australia), B. remota sp. nov. (Northern Territory) and B. viridiaurea sp. nov. (Western Australia). The following seventeen new synonyms are proposed: Bubastes thomsoni Obenberger, 1928, syn. nov. = B. australasiae Obenberger, 1922, B. olivina Obenberger, 1920, syn. nov. = Neraldus bostrychoides Théry 1910, B. boisduvali Obenberger, 1941, syn. nov. = B. erbeni Obenberger, 1941, B. borealis Obenberger, 1941, syn. nov. = B. globicollis Thomson, 1879, B. laticollis Blackburn, 1888, syn. nov. = B. globicollis Thomson, 1879, B. simillima Obenberger, 1922, syn. nov. = B. globicollis Thomson, 1879, B. obscura Obenberger, 1922, syn. nov. = B. inconsistans Thomson, 1879, B. septentrionalis Obenberger, 1941, syn. nov. = B. inconsistans Thomson, 1879, B. viridicupraea Obenberger, 1922, syn. nov. = B. inconsistans Thomson, 1879, B. blackburni Obenberger, 1941, syn. nov. = B. kirbyi Obenberger, 1928, B. chapmani Obenberger, 1941, syn. nov. = B. kirbyi Obenberger, 1928, B. aenea Obenberger, 1922, syn. nov. = B. niveiventris Obenberger, 1922, B. saundersi Obenberger, 1928, syn. nov. = B. odewahni Obenberger, 1928, B. occidentalis Blackburn, 1891, syn. nov. = B. sphaenoida Laporte & Gory, 1836, B. persplendens Obenberger, 1920, syn. nov. = B. sphaenoida Laporte & Gory, 1836, B. splendens Blackburn, 1891, syn. nov. = B. sphaenoida Laporte & Gory, 1836 and B. strandi Obenberger, 1920, syn. nov. = B. suturalis Carter, 1915. Neotype is designated and redescribed for Bubastes cylindrica W. J. Macleay, 1888 and lectotypes are designated for Bubastes thomsoni Obenberger, 1928 and B. leai Carter, 1924. Morphological characters of the genus are presented and all species are illustrated (incl. historical types) and a key is provided for all species of the genus. 


1994 ◽  
Vol 7 (2) ◽  
pp. 171 ◽  
Author(s):  
BJ Conn ◽  
PG Richards

The Australasian species informally known as 'Oxalis sp. A' in New South Wales is here formally named Oxalis thompsoniae Conn & Richards (Oxalis section Corniculatae). A full description and illustrations of it, together with relevant notes on the morphological characters which are taxonomically useful in Oxalis section Corniculatae are provided.


1980 ◽  
Vol 31 (3) ◽  
pp. 449 ◽  
Author(s):  
KW Dawbin ◽  
JC Evans ◽  
MJ Duggin ◽  
EK Leggett

Radiance data collected by Landsat were used to derive wheat production forecasts. Radiance data at three stages of wheat growth in 1976 for the Tamworth region of the New South Wales wheat-belt were analysed by multivariate statistical methods to discriminate between paddocks that had been sown with wheat and those that had not, and to relate radiance to wheat yield. A discriminant function was derived that classified the paddocks, and a regression equation was derived to predict yields of wheat paddocks. Although data were not available for the green vegetative phases of growth, intrinsic testing of classification and yield prediction indicated high accuracy, although extrinsic testing indicated that they were less accurate. Assuming that data are available in future seasons at the vegetative stages, Landsat has a great potential for improving wheat forecasts in Australia.


2003 ◽  
Vol 25 (1) ◽  
pp. 70 ◽  
Author(s):  
C. Waters ◽  
G. Melville ◽  
A. Grice

Eleven species of native grass were collected from 51 sites throughout western New South Wales and south-west Queensland. Approximately 10 whole plants of each species were collected from a site but not all species were collected from each site. Plants were grown in a common environment at Trangie in central western New South Wales and plant morphological and floristic characteristics measured. Data reported here are for observations made in the third year, by which time differences between populations were likely to be more genetic than environmental. Principal component and discriminant analyses revealed a strong relationship between site of origin and plant morphological characteristics, which explained between 61% and 93% of the variation within species. For all but one species, site was significantly correlated with these morphological characteristics. Site could be predicted from morphological characters with a success rate usually greater than 80%. These morphological characteristics must reflect genotypic differences among the collection from the different sites. We were unable to relate this variation to any of a range of site characteristics. Distance between sites could not be used as an indicator of morphological differences between populations. The implications of these findings are discussed in terms of providing strong evidence for the existence of ecotypes and for obtaining appropriate seed sources for revegetation/restoration programs.


1998 ◽  
Vol 49 (2) ◽  
pp. 263 ◽  
Author(s):  
W. Chen ◽  
R. D. B. Lefroy ◽  
G. J. Blair ◽  
J. M. Scott

Differences in concentrations of n-alkanes in the cuticular waxes of plants can be used to estimate the species composition of herbage mixtures or the diet consumed by grazing animals. The objectives of this study were (i) to provide information on the n-alkane (C25-C35) ‘signatures’ or patterns of pasture species occurring in ‘degraded’ and perennial pastures of the Northern Tablelands, New South Wales, and (ii) to examine the extent of the field variation in the signatures. There were considerable differences in odd-numbered alkanes and in their total content between species. There were also significant differences in n-alkane concentrations among species within grasses, legumes, and weeds. For the individual odd-numbered alkanes, differences between species accounted for 87-93% of the total variance in alkane concentration over 3 samplings. Variable results for the temporal effect suggest that time-specific herbage samples are needed in animal diet studies. Analyses of the spatial effect indicate that random cuts over each treatment plot can obtain representative samples of each species. Multivariate statistical analyses using principal component and discriminant analyses indicated that the patterns of alkanes in species occurring on both degraded and perennial pastures were readily distinguishable. These results confirmed that the alkane technique could be used for estimation of diet composition in grazing sheep on the Northern Tablelands, NSW, where differences in n-alkane signatures between species were sufficient and persistent over time.


1994 ◽  
Vol 7 (4) ◽  
pp. 393 ◽  
Author(s):  
K Thiele ◽  
PY Ladiges

The Banksia integrifolia (Proteaceae : Grevilleoideae) species complex currently comprises three varieties: var. aquilonia from northern Queensland; var. integrifolia from coastal Victoria and New South Wales; and var. compar, which is polymorphic and comprises two forms, a coastal form from southern Queensland and a montane form from north-eastern New South Wales and south-eastern Queensland. Ordination analysis of morphological characters of adults and seedlings indicates that the montane populations of var. compar comprise a separate taxon, which is phenetically closer to var. integrifolia than it is to typical var. compar. Banksia integrifolia var. aquilonia is phenetically quite distinct from the remaining taxa. The new names and combinations Banksia integrifolia subsp. monticola K.R. Thiele, B. integrifolia subsp. aquilonia (A.S. George) K.R. Thiele and B. integrifolia subsp. compar (R.Br.) K.R. Thiele are published.


1994 ◽  
Vol 45 (6) ◽  
pp. 1045 ◽  
Author(s):  
SDA Smith

The effects of an outfall of low-volume, tertiary-treated effluent were evaluated within Jervis Bay on the southern coast of New South Wales by using the macrofauna inhabiting kelp (Ecklonia radiata) holdfasts. A range of analytical methods was used to determine differences in faunistic patterns between six sites (three close to the outfall and three controls) in the winters of 1990 and 1991. The analyses indicated that community structure was highly variable over both the spatial and the temporal scales of the study. Although some of the methods provided results consistent with a perturbed environment on the first sampling occasion (ABC plots, log-normal plots), these patterns were not repeated on the second sampling occasion. In addition, the species primarily responsible for the 'perturbed' configuration with those methods were from taxa that have been highlighted as pollution-sensitive in other studies of holdfast fauna. Non-parametric multivariate statistical methods (MDS, ANOSIM) consistently showed significant differences among sites but also revealed highly significant differences within a site over time. There was no consistent difference between sites closest to the outfall and more distant sampling locations and so no outfall effect was suggested. The results indicate that natural environmental factors are more influential than the low-volume, tertiary-treated effluent from the outfall in determining patterns of community structure in the holdfast community within Jervis Bay.


2014 ◽  
Vol 27 (4) ◽  
pp. 257
Author(s):  
Phillip F. Rose ◽  
Karen L. Wilson ◽  
Ian R. H. Telford ◽  
Robert W. Lamont ◽  
Jeremy J. Bruhl

Uncertainty in identifying Allocasuarina shrubs of the North Coast botanical region of New South Wales and south-eastern Queensland prompted investigation of species limits using morphological and cytological data. PATN analysis using 36 morphometric characters, seedling morphology and cytogenetic analysis supported the existing circumscription of A. defungens and A. simulans. Trees of A. littoralis were observed throughout the study area and the distinct morphology of the diploid and polyploid forms is noted. Further work is required to establish whether these differences are consistent over the full range of the species. Shrubby plants of A. sect. Cylindropitys, other than the above species, growing along the NSW North Coast are currently known by several names, including A. defungens×A. littoralis. These plants were found to be morphologically most similar to A. emuina and A. thalassoscopica from south-eastern Queensland and to have similar phenotypes. Allocasuarina thalassoscopica is recircumscribed on morphological characters to encompass these shrubby plants in New South Wales and A. emuina and A. thalassoscopica from south-eastern Queensland. A key is provided for identification of plants of A. sect. Cylindropitys. Counts of chromosomes found that recircumscribed A. thalassoscopica is tetraploid and A. defungens is triploid at Nabiac but tetraploid at Khappinghat Nature Reserve. The results of the present study are consistent with a hypothesis of parallel evolution, which is possibly due to edaphic factors and requires further study.


2021 ◽  
Vol 7 (1) ◽  
pp. 47
Author(s):  
Weixia Wang ◽  
Dilani D. de Silva ◽  
Azin Moslemi ◽  
Jacqueline Edwards ◽  
Peter K. Ades ◽  
...  

Colletotrichum spp. are important pathogens of citrus that cause dieback of branches and postharvest disease. Globally, several species of Colletotrichum have been identified as causing anthracnose of citrus. One hundred and sixty-eight Colletotrichum isolates were collected from anthracnose symptoms on citrus stems, leaves, and fruit from Victoria, New South Wales, and Queensland, and from State herbaria in Australia. Colletotrichum australianum sp. nov., C. fructicola, C. gloeosporioides, C. karstii, C. siamense, and C. theobromicola were identified using multi-gene phylogenetic analyses based on seven genomic loci (ITS, gapdh, act, tub2, ApMat, gs, and chs-1) in the gloeosporioides complex and five genomic loci (ITS, tub2, act, chs-1, and his3) in the boninense complex, as well as morphological characters. Several isolates pathogenic to chili (Capsicum annuum), previously identified as C. queenslandicum, formed a clade with the citrus isolates described here as C. australianum sp. nov. The spore shape and culture characteristics of the chili and citrus isolates of C. australianum were similar and differed from those of C. queenslandicum. This is the first report of C. theobromicola isolated from citrus and the first detection of C. karstii and C. siamense associated with citrus anthracnose in Australia.


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