Humboldtia unijuga Bedd.
Metadata
Description
SEM - a spheroidal grain in equatorial view with a colporus showing micro-perforated depressions and the coarsely striate sculpture, diffuse margo, granular colpal membrane and the oral parts
Pollen Slide N°
IFP 21762
Code
humbunij
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Equatorial view with a colporus: showing LO analysis of areolo-rugulate sculpture and optical section (Figs. 2-5)
Pollen Slide N°
IFP 21762
Code
humbunij
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Equatorial view with a colporus: showing LO analysis of areolo-rugulate sculpture and optical section (Figs. 2-5)
Pollen Slide N°
IFP 21762
Code
humbunij
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Equatorial view with a colporus: showing LO analysis of areolo-rugulate sculpture and optical section (Figs. 2-5)
Pollen Slide N°
IFP 21762
Code
humbunij
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Equatorial view with a colporus: showing LO analysis of areolo-rugulate sculpture and optical section (Figs. 2-5)
Pollen Slide N°
IFP 21762
Code
humbunij
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Equatorial view with an intercolpium, sculpture in lower focus and optical section with 2 colpora in profile (Figs. 6-7)
Pollen Slide N°
IFP 21762
Code
humbunij
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
Equatorial view with an intercolpium, sculpture in lower focus and optical section with 2 colpora in profile (Figs. 6-7)
Pollen Slide N°
IFP 21762
Code
humbunij
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Metadata
Description
SEM - oblique polar view showing obtuse colpal apex and raised areolo-rugulae and microperforate depressions
Pollen Slide N°
IFP 21762
Code
humbunij
Type
Still image
Creator
IFP Team
Creation Date
[s.d.]
Publisher
Institut français de Pondichéry
License
Family
Genus
Key
pollen_000068
Collection Object
Basis of Record
Preserved specimen
Recorded By
Event Date
1976-02-02
Catalog Number
Record Number
HIFP JPP0700
Collection Code
PIFP
Institution Code
IFP
Code
humbunij
Pollen Slide N°
Pollen Slide N°: IFP 21762
Determination
Family
Genus
Specific Epithet
Scientific Name
Scientific Name Authorship
Genus Authorship
Vahl.
Morphology
Symmetry and Form
Monad, radial_symmetry, isopolar, 3-colporate, elliptic in equatorial_view, circular in polar_view
Dimensions
Polar_Axis = 61-67 µm; Equatorial_Axis = 44-50 µm
Apertures
Three colpora; Colpus: narrowly elliptic (4.5x 50 µm) and long with obtuse wavy apices, distance between the adjacent colpal apices 8-9 µm, margo undifferentiated, aperture_membrane granular, thin costae_colpi absent(?); Os: elliptic and lolongate, oral_costae absent(?)
Exine
Coarsely_areolate, width of areola: 2-5 µm, tectate, infratectum columelloid(?), exine thickness at the mid-point of the intercolpium ±2.5 µm
Remark
Classified under Amherstia group by Graham, A. & Baker, G. (1981): Humboldtia has been characerised as coarsely_striate approaching rugulate
Tentative Pollen Typification
Humboldtia type II
References (Generic Palynology)
LM of H. brunonis and H. decurrenns and LM & SEM of H. unijuga in Tissot, C., Chikhi, H. & Nayar, T.S. (1994)
Location
Continent
Country
State / Province
County / District
Locality
Agasthiamalai
Ecology and Taxonomy
A medium-sized tree in dense evergreen forests from 1000m to 1300m. Common. Leaf illustration: Pascal, J-P. & Ramesh, B.R. (1987), fig. 165. Generic description and specific key in Flora of Madras: p. 290 (Gamble, J.S., 1967)
Distribution of Species
Western Peninsular India. Western Ghats: South Travancore and Tirunelveli hills and Nilgiris. Endemic to Western Ghats. Map: Ramesh, B.R. & Pascal, J-P. (1997): Plate N°- 152 & 153
Distribution of Genus
6 spp., South India, Sri Lanka (Willis, J.C., 1988). Keys and distribution data for 6 species in Flora of Madras: pp. 290 & 291 (Gamble, J.S., 1967)
Reuse
License
Cite as
Humboldtia unijuga Bedd.,
in Digital Collections, Institut Français de Pondichéry,
Pollen Slides,
consulted on April, 5th 2025, https://digitalcollections.ifpindia.org/s/ecological-specimens/item/461822