Phylogenetic relationships of Australian Poa (Poaceae: Poinae), including molecular evidence for two new genera, Saxipoa and Sylvipoa

2009 ◽  
Vol 22 (6) ◽  
pp. 413 ◽  
Author(s):  
Lynn J. Gillespie ◽  
Robert J. Soreng ◽  
Surrey W. L. Jacobs
Keyword(s):  
New Zealand ◽  
Dna Sequence ◽  
Phylogenetic Relationships ◽  
Sequence Data ◽  
New Guinea ◽  
The Arctic ◽  
Hybrid Origin ◽  
Molecular Evidence ◽  
New Genera ◽  
Dna Sequence Data

Phylogenetic relationships among Australian species of Poa and other subtribe Poinae genera were studied on the basis of plastid trnT–trnL–trnF and nuclear ribosomal ITS and ETS DNA sequence data. Molecular evidence is provided for two new monotypic endemic Australian genera, Sylvipoa and Saxipoa, on the basis of two species formerly included in Poa, P. queenslandica and P. saxicola, respectively. Both new genera resolved in a clade with three subtribe Poinae genera, the Australian genus Hookerochloa, the South American genus Nicoraepoa, and the arctic genus Arctagrostis. Sylvipoa and Nicoraepoa are sister taxa. Saxipoa resolved as sister to these plus Arctagrostis, but also shares DNA sequence characters with Hookerochloa, suggesting a possible hybrid origin. All other Australian Poa species studied resolved in a subclade within the P. subgenus Poa supersection Homalopoa clade, supporting their classification together in an expanded P. section Brizoides. Five New Zealand and one New Guinea species also resolved in this subclade, supporting their membership in this section. We postulate a minimum of two dispersal events into Australia, one for Poa and one for other Poinae genera, and a minimum of three into New Zealand and two into New Guinea for Poa.

Morphological and phylogenetic relationships of the threatened geophyte Wurmbea novae-zelandiae (Colchicaceae) from New Zealand, with notes on typification

Phytotaxa ◽  
2017 ◽  
Vol 307 (2) ◽  
pp. 123
Author(s):  
PETER B. HEENAN ◽  
TERRY D. MACFARLANE ◽  
ANDREA L. CASE ◽  
SEAN W. GRAHAM ◽  
ANNIKA VINNERSTEN ◽  
...  
Keyword(s):  
New Zealand ◽  
Dna Sequence ◽  
Phylogenetic Relationships ◽  
Floral Morphology ◽  
Sequence Data ◽  
Morphological Characters ◽  
New Combination ◽  
Dna Sequence Data ◽  
Phylogenetic Studies ◽  
Generic Description

The new combination Wurmbea novae-zelandiae was recently made based on published phylogenetic studies, but little information was provided on its relationships based on morphology. This species was originally described as Anguillaria novae-zelandiae, for which a lectotype is designated. Morphological characters of W. novae-zelandiae are re-evaluated and shown to be characteristic of Wurmbea, thereby supporting the revised generic placement. However, W. novae-zelandiae differs from all other Wurmbea species in its diminutive stature, fewer tepals and stamens, and variable floral morphology, with 1–3 carpels, often leaf-like tepals, and aberrant tepal shape and number. DNA sequence data places W. novae-zelandiae as the sister species of W. uniflora, a species not included in earlier phylogenetic studies. These two species share mostly solitary flowers with white tepals, nectaries two per tepal and similar in form and position, small yellow anthers, and styles that are relatively short and recurve as flowering proceeds, with the inner style surface stigmatic for up to half of its length. A revised generic description of Wurmbea is provided to take account of the recently widened concept.

Morphological and molecular evidence places Maronina into synonymy with Protoparmelia (Ascomycota: Lecanorales)

2011 ◽  
Vol 43 (6) ◽  
pp. 561-567 ◽  
Author(s):  
K. PAPONG ◽  
G. KANTVILAS ◽  
H. T. LUMBSCH
Keyword(s):  
Dna Sequence ◽  
Sequence Data ◽  
Distinct Species ◽  
Genetic Distances ◽  
Molecular Evidence ◽  
New Combinations ◽  
Secondary Chemistry ◽  
Phenotypic Characters ◽  
Dna Sequence Data ◽  
Phylogenetic Placement

AbstractThe phylogenetic placement of the genus Maronina was studied, based chiefly on phenotypic characters such as thallus colour and anatomy, secondary chemistry, the anatomy of the excipulum and the ascus-type. DNA sequence data of mitochondrial and nuclear ribosomal loci from some of the species support the hypothesis that Maronina is nested within Protoparmelia. Hence, Maronina is reduced to synonymy with Protoparmelia. Comparison of genetic distances suggests that the two varieties within M. orientalis should be regarded as distinct species. Consequently, the new combinations Protoparmelia australiensis (Hafellner & R. W. Rogers) Kantvilas et al., P. corallifera (Kantvilas & Papong) Kantvilas et al., P. hesperia (Kantvilas & Elix) Kantvilas et al., P. multifera (Nyl.) Kantvilas et al., and P. orientalis (Kantvilas & Papong) Kantvilas et al. are proposed.

Phylogenetic relationships of the spider family Tetragnathidae (Araneae, Araneoidea) based on morphological and DNA sequence data

Cladistics ◽  
2009 ◽  
Vol 25 (2) ◽  
pp. 109-146 ◽  
Author(s):  
Fernando Álvarez-Padilla ◽  
Dimitar Dimitrov ◽  
Gonzalo Giribet ◽  
Gustavo Hormiga
Keyword(s):  
Dna Sequence ◽  
Phylogenetic Relationships ◽  
Sequence Data ◽  
Dna Sequence Data

Phylogenetic Relationships in Bromeliaceae Subfamily Bromelioideae based on Chloroplast DNA Sequence Data

2015 ◽  
Vol 40 (1) ◽  
pp. 116-128 ◽  
Author(s):  
Timothy M. Evans ◽  
Rachel S. Jabaily ◽  
Ana Paula Gelli de Faria ◽  
Leandro de Oliveira F. de Sousa ◽  
Tania Wendt ◽  
...  
Keyword(s):  
Chloroplast Dna ◽  
Dna Sequence ◽  
Phylogenetic Relationships ◽  
Sequence Data ◽  
Dna Sequence Data
Sign in / Sign up

Export Citation Format

Share Document