Vernonia travancorica Hook. f.
Metadata
Description
SEM - subequatorial view showing echinulo-lophate exine with angular lacunae; note the confluence of 5 lacunae [2 polar, 2 ab(p)oral and 1 oral] and the colpus (arrows) and the os-B opening
Pollen Slide N°
IFP 21845
Code
verntrav
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Equatorial view: apertural exine infolded
Pollen Slide N°
IFP 21845
Code
verntrav
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Lower focus of Fig. 2
Pollen Slide N°
IFP 21845
Code
verntrav
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 21845
Code
verntrav
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Polar view showing infolded polar lacunae due to the loss of triradiate polar ridge; the spinulate ridges
Pollen Slide N°
IFP 21845
Code
verntrav
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Polar view: note the triradiate ridge interlinking the 3 heptagonal lacunae
Pollen Slide N°
IFP 21845
Code
verntrav
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Another focus of Fig. 6
Pollen Slide N°
IFP 21845
Code
verntrav
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Optical section of Fig. 6 (lower 3/4th)
Pollen Slide N°
IFP 21845
Code
verntrav
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Optical section of Fig. 6 (upper 3/4th)
Pollen Slide N°
IFP 21845
Code
verntrav
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Optical section of Fig. 6 (slightly deeper than Fig. 9)
Pollen Slide N°
IFP 21845
Code
verntrav
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Fractured exine showing exine structure
Pollen Slide N°
IFP 21845
Code
verntrav
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Family
Genus
Key
pollen_000124
Collection Object
Basis of Record
Preserved specimen
Recorded By
Event Date
1976-02-02
Catalog Number
Record Number
HIFP JPP688
Collection Code
PIFP
Institution Code
IFP
Code
verntrav
Pollen Slide N°
Pollen Slide N°: IFP 21845
Determination
Family
Genus
Specific Epithet
Scientific Name
Scientific Name Authorship
Genus Authorship
Schreb.
Morphology
Symmetry and Form
Monad, ±radial_symmetry, isopolar, 3-colpororate; spheroidal in equatorial_view; circular in polar_view
Dimensions
Polar_Axis = Equatorial_Axis = 55-64 µm
Apertures
Three-colporora, the colpal part within 5 lacunae interconnected by wide interlacunar gaps, colpus elliptic, colpus apex obtuse. The oral complex within the oral lacuna is differentiated into Os A and Os B; Os A is an ovoid thinning (lolongate); Os B is narrowly elliptic, often having a median constriction (lalongate), oral_costae absent(?)
Exine
Echinulophate and 39 lacunate(Para-ap. 12; Inter-ap. 6, Equatorial 6, Ororal 3, Aboral 6 and Polar 6), spinules on the summit of the externally imperforate bilateral crest-like (triangular in L.S.) tectum; height of spinules: 1.5-1.8 µm, height of lophos: 7.0-8.0 µm, tectal descension: 1.8-2.2 µm, the simple to composite columellae delimiting the angular lacunae are well-fused with the nexine
Remark
A eurypalynous genus (see Vasanthy, G. 1985)
Tentative Pollen Typification
Vernonia type II
References (Generic Palynology)
LM, SEM & TEM of Vernonia travancorica in Vasanthy, G. (1985); LM of Vernonia travancorica in Tissot, C., Chikhi, H. & Nayar, T.S. (1994)
Location
Continent
Country
State / Province
County / District
Locality
Agasthiamalai
Ecology and Taxonomy
A small tree above 1000m. Occasional. Leaf illustration: Pascal, J-P. & Ramesh, B.R. (1987), fig. 46. Generic description and specific key in Flora of Madras: pp. 470 & 471 (Gamble, J.S., 1967)
Distribution of Species
Western Peninsular India, Western Ghats: Travancore and Tinnevelly hills. Endemic to Western Ghats. Map: Ramesh, B.R. & Pascal, J-P. (1997): Plate N°- 47
Distribution of Genus
1000 spp. (Eurypalynous); America, Africa, Asia, Australia (Willis, J.C., 1988). Keys and distribution data for 29 species in Flora of Madras: pp. 470-475 (Gamble, J.S., 1967)
Reuse
License
Cite as
Vernonia travancorica Hook. f.,
in Digital Collections, Institut Français de Pondichéry,
Pollen Slides,
consulted on April, 5th 2025, https://digitalcollections.ifpindia.org/s/ecological-specimens/item/461878