Dysoxylum malabaricum Bedd.
Metadata
Description
Equatorial view of a 4-colporate grain showing apertural features, LO analysis of psilate to perforate exine and optical section (Figs. 1-3)
Pollen Slide N°
IFP 21891
Code
dysomala
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Equatorial view of a 4-colporate grain showing apertural features, LO analysis of psilate to perforate exine and optical section (Figs. 1-3)
Pollen Slide N°
IFP 21891
Code
dysomala
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Equatorial view of a 4-colporate grain showing apertural features, LO analysis of psilate to perforate exine and optical section (Figs. 1-3)
Pollen Slide N°
IFP 21891
Code
dysomala
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Equatorial view of a 4- colporate grain
Pollen Slide N°
IFP 21891
Code
dysomala
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Equatorial view of a 5- colporate grain in tangential optical section
Pollen Slide N°
IFP 21891
Code
dysomala
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Slightly oblique polar view of a 4-colporate grain at high focus and optical section (Figs. 6-7)
Pollen Slide N°
IFP 21891
Code
dysomala
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Slightly oblique polar view of a 4-colporate grain at high focus and optical section (Figs. 6-7)
Pollen Slide N°
IFP 21891
Code
dysomala
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Polar view of a 5-colporate grain in low focus and optical section (Figs. 8-9)
Pollen Slide N°
IFP 21891
Code
dysomala
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Polar view of a 5-colporate grain in low focus and optical section (Figs. 8-9)
Pollen Slide N°
IFP 21891
Code
dysomala
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Key
pollen_000041
Collection Object
Basis of Record
Preserved specimen
Recorded By
Collection Code
PIFP
Institution Code
IFP
Code
dysomala
Pollen Slide N°
Pollen Slide N°: IFP 21891
Determination
Family
Genus
Specific Epithet
Scientific Name
Scientific Name Authorship
Genus Authorship
Blume
Morphology
Symmetry and Form
Monad, radial_symmetry, isopolar, 4- (60%) to 5- (40%) stephanocolporate, elliptic to subcircular in equatorial_view; (sub)circular (tending to be subangular) in polar_view
Dimensions
Polar_Axis = 33-39 µm; Equatorial_Axis = 31-40 µm
Apertures
Four to five stephanocolpora, colpus: narrow, elliptic, aperture_membrane psilate, colpus apex subacute or acute, distance between the adjacent colpal apices ±15.0 µm, margo undifferentiated, costae_colpi present; Os: elliptic or oval, (6x3 µm), lateral ends curved, lolongate, oral_costae present
Exine
Psilate with micropits (micro-foveolate to microfossuloid), tectate, infratectum columellate, exine thicknes: at poles ±2.0 µm, at the mid-point of the intercolpium ±1.2 µm
Remark
A stenopalynous genus
Tentative Pollen Typification
Dysoxylum type
References (Generic Palynology)
LM (micrographs) of Dysoxylum malabaricum in Tissot, C., Chikhi, H. & Nayar, T.S. (1994). LM & SEM (micrographs) of Dysoxylum spectabile (perforate tectum) in Moar, N.T. (1993, Pl. 36: figs. 7-10)
Location
Continent
Country
State / Province
Locality
Travancore
Ecology and Taxonomy
A very large tree up to 1000m frequency increases with altitude. The white Cedar. Leaf illustration: Pascal, J-P. & Ramesh, B.R. (1987), fig. 258. Generic description and specific key in Flora of Madras: p. 127 (Gamble, J.S., 1967)
Distribution of Species
Western Peninsular India. Western Ghats: from Mysore to the Anamalais and Travancore (Wayanad southwards). Endemic to Western Ghats. Map: Ramesh, B.R. & Pascal, J-P. (1997): Plate N°- 236
Distribution of Genus
200 spp., Indomal. (Willis, J.C., 1988). Keys and distribution data for 4 species in Flora of Madras: pp.127 & 128 (Gamble, J.S., 1967)
Reuse
License
Cite as
Dysoxylum malabaricum Bedd.,
in Digital Collections, Institut Français de Pondichéry,
Pollen Slides,
consulted on February, 5th 2025, https://ifp.inist.fr/s/ecological-specimens/item/461795