Morphometric analysis of cell wall sculpture in seven infraspecific taxa of Pediastrum boryanum (Sphaeropleales, Chlorophyta) and its taxonomic implications

Phycologia ◽  
2000 ◽  
Vol 39 (1) ◽  
pp. 36-49 ◽  
Author(s):  
Helle Nielsen
Keyword(s):  
Cell Wall ◽  
Morphometric Analysis ◽  
Infraspecific Taxa ◽  
Taxonomic Implications ◽  
Pediastrum Boryanum

Ribosomal ribonucleic acid cistron homologies among Hyphomicrobium and various other bacteria

1977 ◽  
Vol 23 (4) ◽  
pp. 478-481 ◽  
Author(s):  
Richard L. Moore
Keyword(s):  
Cell Wall ◽  
Ribonucleic Acid ◽  
Deoxyribonucleic Acid ◽  
Gram Positive ◽  
Gram Negative ◽  
Group Iii ◽  
Hybrid Formation ◽  
Group I ◽  
Ribosomal Ribonucleic Acid ◽  
Taxonomic Implications

The extent of hybrid formation between the ribosomal ribonucleic acid (r-RNA) of Hyphomicrobium strain B-522 and deoxyribonucleic acid (DNA) from bacteria of 21 different genera was examined. Three generalized groupings were formed. Group I (72–100%) consisted entirely of other strains of Hyphomicrobium. Representatives of the genera Rhodopseudomonas, Chromatium, Caulobacter, Prosthecomicrobium, Rhodomicrobium, Hyphomonas, and Hyphomicrobium made up group II (49–69%). The remaining Gram-negative, Gram-positive, and cell wall – less bacteria fell into group III (12–40%). The taxonomic implications of these results are discussed.

Bursaria (Pittosporaceae): a morphometric analysis and revision

1999 ◽  
Vol 12 (1) ◽  
pp. 117 ◽  
Author(s):  
L. W. Cayzer ◽  
M. D. Crisp ◽  
I. R. H. Telford
Keyword(s):  
Morphometric Analysis ◽  
Morphometric Characters ◽  
Eastern Australia ◽  
Infraspecific Taxa

Bursariais an endemic Australian genus of mostlyspinescent, scruffy shrubs and trees, found in all but the most arid or alpineareas. Previous classifications include many infraspecific taxa and haveproved unworkable in eastern Australia. This paper presents a revision of thegenus. On the basis of phenetic analyses of morphometric characters thefollowing taxa are now recognised: B. calcicolaL.Cayzer, Crisp & I.Telford, B. incana Lindl.,B. longisepala Domin,B. occidentalis E.M.Benn.,B. reevesii L.Cayzer, Crisp & I.Telford,B. spinosa Cav. subsp. lasiophylla (E.M.Benn.) L.Cayzer, Crisp & I.Telford, B. spinosasubsp. spinosa and B. tenuifoliaF.M.Bail. Two are described as new(B. calcicola, B. reevesii), and one is changed in rank:B. spinosa subsp. lasiophylla(formerly B. lasiophylla E.M.Benn.). None of the otherinfraspecific taxa recognised previously is supported by our analyses.

scholarly journals Taxonomic investigations on Malva cretica s.l. (Malvaceae)

2020 ◽  
Vol 77 (1) ◽  
pp. 095
Author(s):  
Emanuele Del Guacchio ◽  
Roberta Vallariello ◽  
Duilio Iamonico
Keyword(s):  
Morphometric Analysis ◽  
Southern Italy ◽  
Species Range ◽  
Infraspecific Taxa ◽  
Central Eastern ◽  
First Time

A morphometric analysis has been carried out for the first time in order to investigate the variability of the infraspecific taxa included in the steno-Mediterranean Malva cretica s.l., i.e. M. Cretica subsp. althaeoides, M. cretica subsp. cretica, and the poorly-known M. Cretica var. montana, described from southern Italy. According to our results, M. cretica subsp. althaeoides and subsp. cretica are worth of taxonomic recognition at subspecies rank and occupy respectively the western and the central-eastern sectors of the species range. Concerning M. Cretica var. montana, characterized by some intermediate features, it should be included in M. Cretica subsp. cretica.

Occurrence of Actinomadura phage in organic mulches used for avocado plantations in Western Australia

1993 ◽  
Vol 39 (4) ◽  
pp. 389-394 ◽  
Author(s):  
D. I. Kurtböke ◽  
C. R. Wilson ◽  
K. Sivasithamparam
Keyword(s):  
Cell Wall ◽  
Host Range ◽  
Western Australia ◽  
Particle Morphology ◽  
Plaque Morphology ◽  
Physiochemical Properties ◽  
Taxonomic Implications ◽  
The University ◽  
Experimental Plots

Phage infecting Actinomadura verrucosospora, Actinomadura pusilla, and Nocardiopsis flava were isolated from mulches applied to avocado trees at the University of Western Australia experimental plots. The physiochemical properties, plaque morphology, host range, and particle morphology of the phage isolated are described. Taxonomic implications of the reactions of some cell wall chemotype III actinomycetes to Actinomadura phage are also discussed.Key words: Actinomadura phage.

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