Wood Anatomy of Indian Albizias

Laxmi Chauhan; R. Dayal

doi:10.1163/22941932-90000940

Wood Anatomy of Indian Albizias

IAWA Journal ◽

10.1163/22941932-90000940 ◽

1985 ◽

Vol 6 (3) ◽

pp. 213-218

Author(s):

Laxmi Chauhan ◽

R. Dayal

Keyword(s):

Specific Gravity ◽

Wood Anatomy ◽

Indian Species

Ten Indian species of Albizia can be distinguished on a num ber of characters such as seriation of rays, frequency of uniseriate and triseriate rays, presence of septa in fibres, presence or absence of a distinct S3 layer in fibre walls and specific gravity.

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Wood anatomy of two South Indian species ofAvicennia With 3 plates

Feddes Repertorium ◽

10.1002/fedr.4910980910 ◽

1987 ◽

Vol 98 (9-10) ◽

pp. 537-542

Author(s):

K. V. Krishnamurthy ◽

K. Sigamani

Keyword(s):

Wood Anatomy ◽

Indian Species ◽

South Indian

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ECOLOGICAL WOOD ANATOMY OF OCOTEA CURUCUTUENSIS

IAWA Journal ◽

10.1163/22941932-00000071 ◽

2014 ◽

Vol 35 (4) ◽

pp. 356-362 ◽

Cited By ~ 2

Author(s):

Eduardo L. Longui ◽

Amanda Assad ◽

Frederico A.R.D.P. Arzolla ◽

Francisco E.S.P. Vilela ◽

João B. Baitello ◽

...

Keyword(s):

Specific Gravity ◽

Wood Anatomy ◽

The State ◽

Tree Size ◽

Mechanical Support ◽

Ecological Wood Anatomy ◽

Wood Specific Gravity ◽

Strong Winds ◽

Anatomical Information ◽

Two Populations

We studied wood anatomy and specific gravity in a total of 18 trees of Ocotea curucutuensis, a recently described species, lacking wood anatomical information. Nine sample trees were obtained in each of two areas, Pico do Itapeva (PI) and Núcleo Curucutu (NC), both in the state of São Paulo, Brazil. These areas have marked differences in precipitation, altitude, and temperature. Anatomical differences between the two populations appeared related to tree size, and possibly indirectly to climate. Higher wood specific gravity related with the smaller diameter in NC trees is hypothesized to contribute to mechanical support of the epiphyte-laden trees and to resistance against the prevailing strong winds.

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Wood Anatomy of Anacardiaceae from India with Special Reference to Systematic Position of Rhus

IAWA Journal ◽

10.1163/22941932-90000172 ◽

2008 ◽

Vol 29 (1) ◽

pp. 79-106 ◽

Cited By ~ 4

Author(s):

Sangeeta Gupta ◽

Manisha Agarwal

Keyword(s):

Special Reference ◽

Tree Species ◽

Wood Anatomy ◽

Systematic Position ◽

Indian Species ◽

Evergreen Species ◽

The Family ◽

Feature List ◽

Ray Cells ◽

Pistacia Terebinthus

The present publication provides a comprehensive wood anatomical survey of woods of Indian tree species of the family Anacardiaceae. Thirtyfive species belonging to 19 genera are described as per the feature list of IAWA. Intrusive fibre cavities and perforated ray cells have been reported in Holigarna arnottiana and Pistacia terebinthus respectively. Two species, Choerospondias axillaris and Rhus hookeri, lacked helical thickening despite being ring-porous. Most tribes of the Anacardiaceae appear to be heterogeneous wood anatomically, except Semecarpeae which are homogeneous. The tribes Mangiferae and Semecarpeae are quite similar and may be placed together. Interesting findings were made regarding Indian species of Rhus, which can be divided into two groups. It is suggested to recognise Rhus Group II as a separate section. The ecological trends suggest that anatomical differentiation exists between tropical and temperate species as well as deciduous and evergreen species.

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Comparative Wood Anatomy of Afromontane and Bushveld Species from Swaziland, Southern Africa

IAWA Journal ◽

10.1163/22941932-90000524 ◽

1990 ◽

Vol 11 (4) ◽

pp. 319-336 ◽

Cited By ~ 2

Author(s):

J. A. B. Prior ◽

P. E. Gasson

Keyword(s):

Specific Gravity ◽

Calcium Oxalate ◽

Southern Africa ◽

Wood Anatomy ◽

Bordered Pits ◽

Perforation Plates ◽

Comparative Wood Anatomy

The habit, specific gravity and wood anatomy of 43 Afromontane and 50 Bushveld species from Swaziland are compared, using qualitative features from SEM photographs of charred samples. Woods with solitary vessels, scalariform perforation plates and fibres with distinctly bordered pits are more common in the Afromontane species, whereas homocellular rays and prismatic crystals of calcium oxalate are more common in woods from the Bushveld.

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Valence electron spectroscopy of inhomogeneous media

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100130389 ◽

1992 ◽

Vol 50 (2) ◽

pp. 1150-1151

Author(s):

A. Howie ◽

D.W. McComb

Keyword(s):

Specific Gravity ◽

Loss Function ◽

Electron Spectroscopy ◽

Valence Electron ◽

Peak Height ◽

Loss Functions ◽

Loss Peak ◽

High Energies ◽

Valence Electron Density ◽

Electron Microscopist

The bulk loss function Im(-l/ε (ω)), a well established tool for the interpretation of valence loss spectra, is being progressively adapted to the wide variety of inhomogeneous samples of interest to the electron microscopist. Proportionality between n, the local valence electron density, and ε-1 (Sellmeyer's equation) has sometimes been assumed but may not be valid even in homogeneous samples. Figs. 1 and 2 show the experimentally measured bulk loss functions for three pure silicates of different specific gravity ρ - quartz (ρ = 2.66), coesite (ρ = 2.93) and a zeolite (ρ = 1.79). Clearly, despite the substantial differences in density, the shift of the prominent loss peak is very small and far less than that predicted by scaling e for quartz with Sellmeyer's equation or even the somewhat smaller shift given by the Clausius-Mossotti (CM) relation which assumes proportionality between n (or ρ in this case) and (ε - 1)/(ε + 2). Both theories overestimate the rise in the peak height for coesite and underestimate the increase at high energies.

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