The anatomy of the barks of Leptospermoideae

1962 ◽  
Vol 10 (1) ◽  
pp. 25 ◽  
Author(s):  
RK Bamber

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.

1948 ◽  
Vol 1 (4) ◽  
pp. 391 ◽  
Author(s):  
HE Dadswell ◽  
HD Ingle

The results reported are the first of a series dealing with the timbers of the south-west Pacific area and cover 22 genera of the family Anacardiaceae. Based on the examination of available species, the anatomical features of each genus have been summarized and the� results set out in tabular form for comparative purposes. The relationship between botanical classification and the wood anatomy of the genera concerned has been discussed. From the information presented it is suggested that a simple card sorting key can be readily developed.


1956 ◽  
Vol 4 (2) ◽  
pp. 125 ◽  
Author(s):  
HD Ingle ◽  
HE Dadswell

The results reported cover 20 genera of the Cunoniaceae and the two monotypic families Davidsoniaceae and Eucryphiaceae, each closely related to the Cunoniaceae. The anatomical features of the genera of these families have been summarized. In the Cunoniaceae these results have been compared with published information on the family and with features revealed by examination of the available species from other parts of the world. A grouping of the genera of the Cunoniaceae based on their wood anatomy is given for diagnostic purposes and for comparison with botanical grouping. Anatomical relationships between the three families are discussed and points of similarity or difference between them and other families likely to be confused with them, are pointed out.


IAWA Journal ◽  
2014 ◽  
Vol 35 (1) ◽  
pp. 19-30 ◽  
Author(s):  
Tahysa M. Macedo ◽  
Claudia F. Barros ◽  
Haroldo C. Lima ◽  
Cecília G. Costa

This article describes the wood anatomy of seven species of Tachigali Aublet with the aim of identifying 1) diagnostic characters at the species level and 2) anatomical features with potential for future combined morphological and molecular phylogenetic analysis. Tachigali species present fibre dimorphism and can be grouped according to the arrangement of the thin-walled fibres: tangential bands of thin-walled fibres alternating with thick-walled fibres, as in T. duckei and T. vulgaris; wavy bands , as in T. paratyensis, T. glauca and T. vulgaris; well-developed bands to describe the abundance of thin-walled fibres in contrast to thick-walled fibres, as in T. denudata and T. pilgeriana; and in islands or groups of thin-walled fibres scattered among ordinary fibres. It is recommended to explore the phylogenetic significance of the different types of fibre dimorphism in future combined molecular and morphological cladistics analyses.


IAWA Journal ◽  
1988 ◽  
Vol 9 (4) ◽  
pp. 299-316 ◽  
Author(s):  
Ken Ogata

The wood anatomy of 35 species belonging to 6 genera of the family Caprifoliaceae indigenous to Japan is described. Intergeneric or interspecific differences are recognised in various characters, especially vessel distribution, type of perforation plates (simple or scalariform), intervessel and vessel-ray pitting, presence or absence of spiral thickenings in vessels and fibres, ray histology and fibre type (fibre-tracheids or libriform fibres).


IAWA Journal ◽  
1993 ◽  
Vol 14 (4) ◽  
pp. 341-357 ◽  
Author(s):  
Sherwin Carlquist

Wood of Aristolochiaceae has vessels with simple petforation plates; lateral wall pitting of vessels alternate to scalariform; tracheids, fibre-tracheids or libriform fibres present; axial parenchyma diffuse, diffuse-in-aggregates, scanty vasicentric, and banded apotracheal; rays wide and tall, paedomorphic, multiseriate only, little altered during ontogeny (new rays originate suddenly as wid~ multiseriate rays); ethereal oil cells present in rays; wood structure storied. All of these features occur in Lactoridaceae and Piperaceae, and support the grouping of Aristolochiaceae with these families and the nonwoody family Saururaceae. Chloranthaceae may be the family next closest to this assemblage. Druses characteristically occur in rays of Aristolochia. Tracheids in Aristolochia may be correlated with the lianoid habit, although Holostylis, a caudex perennial thought close to Aristolochia, also has tracheids. The fibre-tracheids and libriform fibres of Apama and Thottea may be related to the sympodial shrubby habit of those two genera. On the basis of one species each of Apama and Thottea, the genera differ with respect to wood anatomy. The paedomorphic ray structure of all genera of Aristolochiaceae suggests an herbaceous or minimally woody ancestry rather than ancestors with typically woody monopodial habit. Types of bark structure observed in the species surveyed are briefly characterised. Storied wood structure and presence of druses and ethereal oil cells in rays are newly reported for the family.


1956 ◽  
Vol 4 (3) ◽  
pp. 200 ◽  
Author(s):  
CF James ◽  
HD Ingle

Examination of 13 genera from this area has indicated two structural groups within the timbers of the Flacourtiaceae. The wood anatomy of genera examined from areas other than the south-west Pacific area has been found to agree with these two groups. The anatomical features of each genus have been summarized and salient features set out in tabular form. From these an artificial key separating the genera, where possible, has been prepared. The grouping of the genera described based on wood anatomy is compared with the grouping of the family based on botanical features as suggested by Gilg (1925). Anatomical features separating the Flacourtiaceae from the groups of timbers with some similar characteristics have been indicated.


IAWA Journal ◽  
1993 ◽  
Vol 14 (1) ◽  
pp. 77-86 ◽  
Author(s):  
Juliet Prior ◽  
Peter Gasson

Charcoal often retains sufficient qualitative anatomical features for the family and genus of the wood to be identified. During the charring process however, considerable and sometimes unexpected changes in quantitative characters occur, which are of particular importance to species identification and ecological wood anatomy. Comparative measurements were made using charred and uncharred trunkwood from six common southern African savanna trees. SampIes were charred for 30 minutes at either 400 or 700°C. Charcoal yield and significant quantitative changes in vessel diameter and ray cells are related both to wood anatomy and to the process of combustion. Differences observed on charring were most closely correlated with the nature and quantity of the fibres. Axial parenchyma cells expanded after charring at both temperatures.


2013 ◽  
Vol 18 (1) ◽  
pp. 59-69 ◽  
Author(s):  
Isabelle Albert ◽  
Dieter Ferring ◽  
Tom Michels

According to the intergenerational solidarity model, family members who share similar values about family obligations should have a closer relationship and support each other more than families with a lower value consensus. The present study first describes similarities and differences between two family generations (mothers and daughters) with respect to their adherence to family values and, second, examines patterns of relations between intergenerational consensus on family values, affectual solidarity, and functional solidarity in a sample of 51 mother-daughter dyads comprising N = 102 participants from Luxembourgish and Portuguese immigrant families living in the Grand Duchy of Luxembourg. Results showed a small generation gap in values of hierarchical gender roles, but an acculturation gap was found in Portuguese mother-daughter dyads regarding obligations toward the family. A higher mother-daughter value consensus was related to higher affectual solidarity of daughters toward their mothers but not vice versa. Whereas affection and value consensus both predicted support provided by daughters to their mothers, affection mediated the relationship between consensual solidarity and received maternal support. With regard to mothers, only affection predicted provided support for daughters, whereas mothers’ perception of received support from their daughters was predicted by value consensus and, in the case of Luxembourgish mothers, by affection toward daughters.


Fitoterapia ◽  
2019 ◽  
Vol 4 (4) ◽  
pp. 46-50
Author(s):  
I. Yu. Posochova ◽  
◽  
O. P. Khvorost ◽  
Yu. A. Fedchenkova ◽  
◽  
...  

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