scholarly journals GenusPimelea(Thymelaeaceae) in New Zealand 1. The taxonomic treatment of seven endemic, glabrous‐leaved species

2008 ◽  
Vol 46 (2) ◽  
pp. 127-176 ◽  
Author(s):  
Colin J. Burrows
Keyword(s):  
New Zealand ◽  
Taxonomic Treatment

Eocene vegetation from hasties, north-eastern Tasmania

1992 ◽  
Vol 5 (4) ◽  
pp. 431 ◽  
Author(s):  
M Pole
Keyword(s):  
New Zealand ◽  
South America ◽  
Cloud Cover ◽  
Late Eocene ◽  
Taxonomic Treatment ◽  
High Rainfall ◽  
North Eastern ◽  
First Occurrence

The Mid–Late Eocene macrofloral assemblage from Hasties, north-eastern Tasmania is characterised by a large diversity of conifers. Fourteen species are identified including two species of Araucaria (A. hastiensis Hill & Bigwood and A. annulata Bigwood & Hill) and 12 species of Podocarpaceae: Acmopyle compactus sp. nov.; Lepidothamnus diemenensis sp. nov.; two species of Dacrycarpus (D. geminus sp, nov. and D. mucronatus Wells & Hill); Phyllocladus aspleniifolius Hook; Podocarpus sinuatus sp. nov.; two species of Prumnopitys (P. portensis sp. nov. and P. cf. P. montana), Smithtonia jonesii Hill & Pole; and three species of uncertain genus. Seven taxa of angiosperm macrofossils (dispersed cuticles and leaves) are identified: two species of Luurophyllum (Lauraceae); Luurophyllum cuspidatus sp. nov. and L. cf. L. arcuatum Hill; Nothofagus tasmanica (Fagaceae); Gymnostoma sp. (Casuarinaceae); Cenarrhenes nitida (Proteaceae), cf. Xanthomyrtus sp. (Myrtaceae); and a taxon of possible Cunoniaceae affinity. The vegetation, which was dominated by Lepidothamnus diemenensis, grew in a floodbasin swamp. The climate was cool, seasonal, with high rainfall and cloud cover. This paper is an important 'whole flora' taxonomic treatment of a macrofossil assemblage. It notes the first occurrence in Australia of the conifer Lepidothamus (currently restricted to New Zealand and South America).

Taxonomic revision of the Myosotis australis group (Boraginaceae) native to Australia, New Zealand and New Guinea

2020 ◽  
Vol 33 (6) ◽  
pp. 477
Author(s):  
Heidi M. Meudt ◽  
Michael J. Thorsen ◽  
Jessica M. Prebble
Keyword(s):  
New Zealand ◽  
Introduced Species ◽  
Species Delimitation ◽  
Taxonomic Revision ◽  
New Guinea ◽  
Taxonomic Treatment ◽  
Palynological Data ◽  
Pollen Characters ◽  
Variable Species ◽  
Rosette Leaf

The three main aims of this study were to circumscribe the Myosotis australis R.Br. group, determine the taxonomic utility of pollen characters, and delimit species and revise their taxonomy using macro-morphological and palynological data. The M. australis group is here recircumscribed to comprise two species, M. saxatilis Petrie (Marlborough and Otago, New Zealand) and M. australis. Myosotis australis is a widespread, morphologically variable species with two subspecies. M. australis subsp. australis comprises all Australian and most New Zealand specimens, including M. mooreana Lehnebach, M. lytteltonensis (Laing & A.Wall) de Lange, and several white- or yellow-flowered tag-named taxa from New Zealand, whereas M. australis subsp. saruwagedica (Schltr. ex Brand) Meudt, Thorsen & Prebble, comb. et stat. nov. is endemic to New Guinea. The M. australis group can be distinguished from all other ebracteate-erect Myosotis plants sampled to date, including the Australian endemic, M. exarrhena F.Muell., by a suite of characters, i.e. included anthers, calyx with both retrorse and hooked trichomes, rosette leaf trichomes retrorse abaxially and oblique to the midrib adaxially, and leaf length:width ratio of >2:1. Other characters can distinguish the group from M. discolor Pers., M. arvensis (L.) Hill, and M. umbrosa Meudt, Prebble & Thorsen respectively. Pollen characters were not useful for species delimitation within the M. australis group, but they can help distinguish several species outside it, including natural hybrids of M. australis and M. exarrhena in Australia. Myosotis australis, M. saxatilis and M. exarrhena are included in the taxonomic treatment, whereas introduced species M. discolor and M. arvensis are included in the key only.

A consistent taxonomic treatment for dimorphic variation in New Zealand Adiantum species

2019 ◽  
Vol 57 (4) ◽  
pp. 249-260
Author(s):  
Patrick J. Brownsey ◽  
Lara D. Shepherd ◽  
Leon R. Perrie
Keyword(s):  
New Zealand ◽  
Taxonomic Treatment

Taxonomic revision of five species groups of ebracteate-erect Myosotis (Boraginaceae) endemic to New Zealand, based on morphology, and description of new subspecies

2021 ◽  
Author(s):  
Heidi M. Meudt
Keyword(s):  
New Zealand ◽  
Taxonomic Revision ◽  
Morphological Characters ◽  
Morphological Data ◽  
Natural Hybrid ◽  
The South ◽  
New Subspecies ◽  
Taxonomic Treatment ◽  
Species Groups

Macro-morphological data were analysed to assess the distinctiveness and revise the taxonomy of 14 species, varieties and tag-named taxa in five informal species groups of ebracteate-erect forget-me-nots endemic to New Zealand. The following nine species are recognised: Myosotis albosericea Hook.f., M. brockiei L.B.Moore & M.J.A.Simpson, M. capitata Hook.f., M. concinna Cheeseman, M. goyenii Petrie, M. laeta Cheeseman, M. monroi Cheeseman, M. rakiura L.B.Moore, and M. traversii Hook.f. Three species have two allopatric subspecies each in the South Island, distinguished by few, minor morphological characters, including Myosotis brockiei subsp. brockiei and M. brockiei subsp. dysis Courtney & Meudt subsp. nov., M. goyenii subsp. goyenii and M. goyenii subsp. infima Meudt & Heenan, and M. traversii subsp. cantabrica (L.B.Moore) Meudt comb. et stat. nov. and M. traversii subsp. traversii. Myosotis × cinerascens Petrie is hypothesised to be a rare natural hybrid involving M. traversii subsp. cantabrica and another species, possibly M. colensoi. Several vegetative and floral characteristics can distinguish the study taxa from one another and from other ebracteate-erect species. The nine species plus M. × cinerascens are included in the taxonomic treatment, and the key also includes other recently revised ebracteate-erect species.

Magellanic Cloud Eclipsing Binaries: Primary Distance Indicators

1999 ◽  
Vol 190 ◽  
pp. 563-566
Author(s):  
J. D. Pritchard ◽  
W. Tobin ◽  
J. V. Clausen ◽  
E. F. Guinan ◽  
E. L. Fitzpatrick ◽  
...  
Keyword(s):  
New Zealand ◽  
Magellanic Cloud ◽  
Eclipsing Binaries ◽  
Fundamental Parameters ◽  
Distance Indicators

Our collaboration involves groups in Denmark, the U.S.A. Spain and of course New Zealand. Combining ground-based and satellite (IUEandHST) observations we aim to determine accurate and precise stellar fundamental parameters for the components of Magellanic Cloud Eclipsing Binaries as well as the distances to these systems and hence the parent galaxies themselves. This poster presents our latest progress.

Heat-Etching with a Bullivant Type II Simple Freeze-Cleave Device

1970 ◽  
Vol 28 ◽  
pp. 106-107 ◽  
Author(s):  
Ronald S. Weinstein ◽  
N. Scott McNutt
Keyword(s):  
New Zealand ◽  
General Hospital ◽  
Massachusetts General Hospital ◽  
Type I ◽  
Type Ii ◽  
Collaborative Effort ◽  
Temperature And Pressure ◽  
The University

The Type I simple cold block device was described by Bullivant and Ames in 1966 and represented the product of the first successful effort to simplify the equipment required to do sophisticated freeze-cleave techniques. Bullivant, Weinstein and Someda described the Type II device which is a modification of the Type I device and was developed as a collaborative effort at the Massachusetts General Hospital and the University of Auckland, New Zealand. The modifications reduced specimen contamination and provided controlled specimen warming for heat-etching of fracture faces. We have now tested the Mass. General Hospital version of the Type II device (called the “Type II-MGH device”) on a wide variety of biological specimens and have established temperature and pressure curves for routine heat-etching with the device.

A Cytochemical Study of Glucose-6-Phosphatase (G-6-PASE) in Cells Participating in Atherogenesis of Rabbit Aorta

1975 ◽  
Vol 33 ◽  
pp. 460-461
Author(s):  
Sidney D. Kobernick ◽  
Edna A. Elfont ◽  
Neddra L. Brooks
Keyword(s):  
Lipid Metabolism ◽  
New Zealand ◽  
Aortic Wall ◽  
Rabbit Aorta ◽  
Plaque Formation ◽  
Metabolic Changes ◽  
Atherosclerotic Plaques ◽  
Cytochemical Study ◽  
Cellular Alteration ◽  
New Zealand White Rabbits

This cytochemical study was designed to investigate early metabolic changes in the aortic wall that might lead to or accompany development of atherosclerotic plaques in rabbits. The hypothesis that the primary cellular alteration leading to plaque formation might be due to changes in either carbohydrate or lipid metabolism led to histochemical studies that showed elevation of G-6-Pase in atherosclerotic plaques of rabbit aorta. This observation initiated the present investigation to determine how early in plaque formation and in which cells this change could be observed.Male New Zealand white rabbits of approximately 2000 kg consumed normal diets or diets containing 0.25 or 1.0 gm of cholesterol per day for 10, 50 and 90 days. Aortas were injected jin situ with glutaraldehyde fixative and dissected out. The plaques were identified, isolated, minced and fixed for not more than 10 minutes. Incubation and postfixation proceeded as described by Leskes and co-workers.

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