Symplocos obtusa Wall.
Metadata
Description
Equatorial view: an oblate grain with an intercolpium and verrucae in low focus
Pollen Slide N°
IFP 1623
Code
sympobtu
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Another shot of Fig. 1; note the brevicolpus and costate os
Pollen Slide N°
IFP 1623
Code
sympobtu
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Optical section of Fig. 1
Pollen Slide N°
IFP 1623
Code
sympobtu
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Equatorial view, partly folded: note the brevicolpus and margo
Pollen Slide N°
IFP 1623
Code
sympobtu
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Optical section of Fig. 4
Pollen Slide N°
IFP 1623
Code
sympobtu
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Subpolar view (subtriangular): in different foci
Pollen Slide N°
IFP 1623
Code
sympobtu
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Polar view (subcircular): verrucae in 2 foci
Pollen Slide N°
IFP 1623
Code
sympobtu
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Another shot of Fig. 7; verrucae in low focus
Pollen Slide N°
IFP 1623
Code
sympobtu
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Low focus of Fig. 8
Pollen Slide N°
IFP 1623
Code
sympobtu
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Optical section of Fig. 8
Pollen Slide N°
IFP 1623
Code
sympobtu
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Family
Genus
Key
pollen_000114
Collection Object
Basis of Record
Preserved specimen
Collection Code
PIFP
Institution Code
IFP
Code
sympobtu
Pollen Slide N°
Pollen Slide N°: IFP 1623
Determination
Family
Genus
Specific Epithet
Scientific Name
Scientific Name Authorship
Genus Authorship
Jacq.
Morphology
Symmetry and Form
Monad, radial_symmetry, isopolar, 3-(2-) colporate, elliptic ( E > P ) in equatorial_view, subtriangular (angulaperturate) in polar_view
Dimensions
Polar_Axis = 28-32 µm; Equatorial_Axis = 29-41 µm
Apertures
Three colpora; Colpus: very short, and elliptic, much shorter than P axis (brevicolpus), colpus apex acute, distance between the adjacent colpal apices 30µm, margo projecting out and lined by gemma/big verrucae, aperture_membrane feebly verrucate, costae_colpi absent; Os: elliptic, lalongate, distinct costae with endocracks in the equatorial_zone
Exine
Gemmate or grossly verrucate, verrucae (1.2x0.5 µm), tectate, infratectum columellate, exine thickness at the mid-point of the intercolpium ±3.0 µm
Remark
A eurypalynous genus. Pollen morphology may be instrumental in subdividing the genus (or-if considered appropriate - in referring the different species to a number of genera now usally regarded as sections etc. under Symplocas) [see Erdtman, G. (1952): p. 425]. Pollen grains of 85 species of Indo-pacific "Symplocos": Symplocos type (2 subtypes) and Hopea type (8 subtypes) in Meijden, R. vand der (1970)
Tentative Pollen Typification
Symplocos "obtusa" type
References (Generic Palynology)
LM of Symplocos obtusa in Guinet, Ph. (1962). LM & SEM of Symplocos anamallayana, S. foliosa and S. microphylla in Vasanthy, G. (1976). LM & SEM of Symplocos tinctoria (micro-rugulate exine surface) in Lieux, M.H. (1983); LM, SEM & TEM of 4 types of Brazilian Symplocos in Barth, O.M. (1982)
Location
Ecology and Taxonomy
A glabrous tree. Generic description and specific key in Flora of Madras: pp. 547 & 548 (Gamble, J.S., 1967)
Distribution of Species
Western Ghats: Nilgiris and Palnis above 2000m, most common in high elevations like Doddabetta. Endemic to Western Ghats
Distribution of Genus
350 spp., Trop. and subtrop., Asia, Australia, Polynesia, America (Willis, J.C., 1988). Keys and distribution data for 20 species in Flora of Madras: pp. 547-551 (Gamble, J.S., 1967)
Reuse
License
Cite as
Symplocos obtusa Wall.,
in Digital Collections, Institut Français de Pondichéry,
Pollen Slides,
consulted on February, 5th 2025, https://ifp.inist.fr/s/ecological-specimens/item/461868