Pterygota alata R.Br.
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Metadata
Description
Equatorial view with a colporus and parts of 2 intercolpia at low focus
Pollen Slide N°
IFP 21848
Code
pteralat
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Equatorial view with a colporus; note the LO analysis of medium reticulate exine
Pollen Slide N°
IFP 21848
Code
pteralat
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Low-focus of Fig. 2 showing outlines of bow-shaped os and of colpus
Pollen Slide N°
IFP 21848
Code
pteralat
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Optical section of Fig. 2
Pollen Slide N°
IFP 21848
Code
pteralat
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
SEM - equatorial view with an intercolpium; medium reticulate
Pollen Slide N°
IFP 21848
Code
pteralat
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Equatorial view with an intercolpium; medium reticulate exine at high focus
Pollen Slide N°
IFP 21848
Code
pteralat
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Focus 2 of Fig. 6
Pollen Slide N°
IFP 21848
Code
pteralat
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Optical section of Fig. 6
Pollen Slide N°
IFP 21848
Code
pteralat
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
SEM - polar view showing medium reticulate exine surface, undifferentiated margo and granuloid colpal membrane
Pollen Slide N°
IFP 21848
Code
pteralat
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
SEM - Close-up of Fig. 9
Pollen Slide N°
IFP 21848
Code
pteralat
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Polar view: note the granuloid colpal membrane
Pollen Slide N°
IFP 21848
Code
pteralat
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Focus 2 of Fig. 11
Pollen Slide N°
IFP 21848
Code
pteralat
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Optical section of Fig. 11
Pollen Slide N°
IFP 21848
Code
pteralat
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Family
Genus
Key
pollen_000106
Collection Object
Basis of Record
Preserved specimen
Recorded By
Record Number
Bourne-2259
Collection Code
PIFP
Institution Code
IFP
Code
pteralat
Pollen Slide N°
Pollen Slide N°: IFP 21848
Determination
Family
Genus
Specific Epithet
Scientific Name
Scientific Name Authorship
Genus Authorship
Schott&Endl.
Morphology
Symmetry and Form
Monad, radial_symmetry, isopolar, 3-colporate, elliptic in equatorial_view, (sub)circular in polar_view
Dimensions
Polar_Axis = 38-50 µm; Equatorial_Axis = 35-44 µm
Apertures
Three colpora; Colpus: narrow and longer, colpus apex acute, distance between the adjacent colpal apices 13-18 µm, margo undifferentiated, aperture_membrane scabrate, costae_colpi thin(?); Os: medially constricted, horizontal (bow-shaped) with obtuse lateral ends, lalongate, oral_costae thin(?)
Exine
Reticulate, meshes are of two different sizes (heterobrochate): medium-sized lumina (d= 3-4 µm) intermingled with micro-lumina (d=≥1.0 µm), infratectum simplicolumellate, mur <1.0 µm; exine thickness at the mid-point of the intercolpium ±2.5 µm
Remark
A stenopalynous genus
Tentative Pollen Typification
Pterygota alata type
References (Generic Palynology)
LM & SEM of Pterygota alata in Tissot, C., Chikhi, H. & Nayar, T.S. (1994) and of P. perrieri in Presting, D., Straka, H., & Friederich, B. (1983)
Location
Ecology and Taxonomy
A tall tree in the openings of forests, up to 1000m. Occasional. Leaf illustration: Pascal, J-P. & Ramesh, B.R. (1987), fig. 382. Generic and specific descriptions in Flora of Madras: p. 75 (Gamble, J.S., 1967)
Distribution of Species
India (Chittagong, Andaman Islands and Western Peninsular India) and Burma (Pegu); Western Ghats: from Malabar to Tirunelveli hills
Distribution of Genus
20 spp., Tropics, chiefly old world (Willis, J.C., 1988). Distribution data for 1 species in Flora of Madras: p. 75 (Gamble, J.S., 1967)
Reuse
License
Cite as
Pterygota alata R.Br.,
in Digital Collections, Institut Français de Pondichéry,
Pollen Slides,
consulted on April, 10th 2025, https://digitalcollections.ifpindia.org/s/ecological-specimens/item/461860