Dimorphocalyx lawianus Hook. f.
Metadata
Description
Photographed at x400: supratectal sculptural elements in focus 2 and optical section (Figs. 1-2)
Pollen Slide N°
IFP 19238
Code
dimolawi
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Photographed at x400: supratectal sculptural elements in focus 2 and optical section (Figs. 1-2)
Pollen Slide N°
IFP 19238
Code
dimolawi
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
SEM showing 5-8 furrowed clavae surrounding lumina that enclose a few luminal elements
Pollen Slide N°
IFP 19238
Code
dimolawi
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
SEM, close-up of Fig. 3 showing clavae (lobed outline due to thin furrows) surrounding lumina that enclose a few luminal elements
Pollen Slide N°
IFP 19238
Code
dimolawi
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Analysis of Croton paterrn in focus 1
Pollen Slide N°
IFP 19238
Code
dimolawi
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Analysis of Croton paterrn in focus 2
Pollen Slide N°
IFP 19238
Code
dimolawi
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
A fractured exine in 3rd focus showing the triangular shape of clavae in cross section and the smaller luminal elements
Pollen Slide N°
IFP 19238
Code
dimolawi
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
An half of a grain in optical section; note the infra- and inter- sculptural thin exine (±1.0 µm)
Pollen Slide N°
IFP 19238
Code
dimolawi
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Three fourth of a grain showing the profiles of clavae along the "edge" and inner ones partly in high focus and partly in low focus [rings of 5-8 clavae, (triangular or subcircular in cross section)]
Pollen Slide N°
IFP 19238
Code
dimolawi
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Family
Genus
Key
pollen_000036
Collection Object
Basis of Record
Preserved specimen
Recorded By
Record Number
Henry-19897
Collection Code
PIFP
Institution Code
IFP
Code
dimolawi
Pollen Slide N°
Pollen Slide N°: IFP 19238
Determination
Family
Genus
Specific Epithet
Scientific Name
Scientific Name Authorship
Morphology
Symmetry and Form
Monad, spherical symmetry, apolar, inaperturate (omniaperturate); spherical_to_spheroidal in all views
Dimensions
Diameter = 50-62 µm
Apertures
Inaperturate (no ectexinal apertural markings) or omniaperturate (uniformly patterned exine and intine underlain by thick onciform_zone)
Exine
Croton pattern; tectate, intraluminal elements present, exine thickness + sculpture ±5.0 µm
Remark
A stenopalynous genus (see Punt, W. 1962, p. 51)
Tentative Pollen Typification
Croton type
References (Generic Palynology)
LM & SEM (monographs) of Dimorphocalyx lawianus in Tissot, C., Chikhi, H. & Nayar, T.S. (1994)
Location
Continent
Country
State / Province
County / District
Locality
Kannikatti
Ecology and Taxonomy
A small to medium sized tree from 900-1200m. Generic description and specific key in Flora of Madras: p. 935 (Gamble, J.S., 1967)
Distribution of Species
Western Ghats, North Konkan, Kanara, Anamalai, Travancore and Tirunelveli Hills. Endemic to Western Ghats. Map: Ramesh, B.R & Pascal, J-P. (1997): Plate N°- 121
Distribution of Genus
12 spp., Indomal., Australia (Willis, J.C., 1988). Keys and distribution data for 2 species in Flora of Madras: p. 935 (Gamble, J.S., 1967)
Reuse
License
Cite as
Dimorphocalyx lawianus Hook. f.,
in Digital Collections, Institut Français de Pondichéry,
Pollen Slides,
consulted on February, 5th 2025, https://ifp.inist.fr/s/ecological-specimens/item/461790