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Dimocarpus longan Lour.

Metadata

Description

SEM - equatorial view: note the infolded upper half of the colpal membrane and its micro-scabrate lower half

Pollen Slide N°

IFP 14726

Code

dimolong

Type

Still image

Creator

IFP Team

Creation Date

[s.d.]

Publisher

Institut français de Pondichéry

License

cc-byCC BY

Metadata

Description

SEM, close-up of Fig.1 showing the micro-rugulae bearing micro-spinules

Pollen Slide N°

IFP 14726

Code

dimolong

Type

Still image

Creator

IFP Team

Creation Date

[s.d.]

Publisher

Institut français de Pondichéry

License

cc-byCC BY

Metadata

Description

Equatorial view: focus on aperture (colpus and os) in 2 foci (Figs. 3-4)

Pollen Slide N°

IFP 14726

Code

dimolong

Type

Still image

Creator

IFP Team

Creation Date

[s.d.]

Publisher

Institut français de Pondichéry

License

cc-byCC BY

Metadata

Description

Equatorial view: focus on aperture (colpus and os) in 2 foci (Figs. 3-4)

Pollen Slide N°

IFP 14726

Code

dimolong

Type

Still image

Creator

IFP Team

Creation Date

[s.d.]

Publisher

Institut français de Pondichéry

License

cc-byCC BY

Metadata

Description

SEM, equatorial view: showing micro-granulo-ruguloid intercolpium

Pollen Slide N°

IFP 14726

Code

dimolong

Type

Still image

Creator

IFP Team

Creation Date

[s.d.]

Publisher

Institut français de Pondichéry

License

cc-byCC BY

Metadata

Description

Equatorial view: "granulo-rugulate" intercolpial exine; surface to optical section (Figs. 6-8)

Pollen Slide N°

IFP 14726

Code

dimolong

Type

Still image

Creator

IFP Team

Creation Date

[s.d.]

Publisher

Institut français de Pondichéry

License

cc-byCC BY

Metadata

Description

Equatorial view: "granulo-rugulate" intercolpial exine; surface to optical section (Figs. 6-8)

Pollen Slide N°

IFP 14726

Code

dimolong

Type

Still image

Creator

IFP Team

Creation Date

[s.d.]

Publisher

Institut français de Pondichéry

License

cc-byCC BY

Metadata

Description

Equatorial view: "granulo-rugulate" intercolpial exine; surface to optical section (Figs. 6-8)

Pollen Slide N°

IFP 14726

Code

dimolong

Type

Still image

Creator

IFP Team

Creation Date

[s.d.]

Publisher

Institut français de Pondichéry

License

cc-byCC BY

Metadata

Description

SEM - oblique polar view showing oral openings, obtuse colpal apices and micro-granular aperture membrane

Pollen Slide N°

IFP 14726

Code

dimolong

Type

Still image

Creator

IFP Team

Creation Date

[s.d.]

Publisher

Institut français de Pondichéry

License

cc-byCC BY

Metadata

Description

Polar view: analysis of exine (Figs. 10-12)

Pollen Slide N°

IFP 14726

Code

dimolong

Type

Still image

Creator

IFP Team

Creation Date

[s.d.]

Publisher

Institut français de Pondichéry

License

cc-byCC BY

Metadata

Description

Polar view: analysis of exine (Figs. 10-12)

Pollen Slide N°

IFP 14726

Code

dimolong

Type

Still image

Creator

IFP Team

Creation Date

[s.d.]

Publisher

Institut français de Pondichéry

License

cc-byCC BY

Metadata

Description

Polar view: analysis of exine (Figs. 10-12)

Pollen Slide N°

IFP 14726

Code

dimolong

Type

Still image

Creator

IFP Team

Creation Date

[s.d.]

Publisher

Institut français de Pondichéry

License

cc-byCC BY

Family

SAPINDACEAE

Genus

Dimocarpus

Synonyms

Nephelium longana (Lam.) Camb.

Key

pollen_000035

Collection Object

Basis of Record

Preserved specimen

Recorded By

C.J. Saldanha

Record Number

Saldanha. C.J.-16536

Collection Code

PIFP

Institution Code

IFP

Source Herbarium

JCB

Code

dimolong

Pollen Slide N°

Pollen Slide N°: IFP 14726

Determination

Family

SAPINDACEAE

Genus

Dimocarpus

Specific Epithet

longan

Scientific Name

Dimocarpus longan Lour.

Scientific Name Authorship

Lour.

Genus Authorship

Lour.(NepheliumLinn.)

Morphology

Symmetry and Form

Monad, radial_symmetry, isopolar, elliptic ( E > P ) in equatorial_view, (sub)triangular (angulaperturate) in polar_view

Dimensions

Polar_Axis = 19-25 µm; Equatorial_Axis = 24-29 µm

Apertures

Three colpora, Colpus: elliptic, colpus apex acute, distance between the adjacent colpal apices ±11.0-14.0 µm, margo undifferentiated, aperture_membrane psilate, costae_colpi present; Os: elliptic with curved lateral ends, lolongate, oral_costae thin

Exine

Scabrate or Granulo-rugulate, (in SEM: micro-rugules and micro-spinules are discernible); tectate, infratectum columellate, exine at the mid-point of the intercolpium ±2.0 µm

Remark

A stenopalynous genus but it can be divided into 7 subtypes on minor differences in shape, aperture and exine pattern (Muller, J. 1971)

Tentative Pollen Typification

Dimocarpus longan subtype

References (Generic Palynology)

LM & SEM (micrographs) of Dimocarpus longan in Tissot, C., Chikhi, H. & Nayar, T.S. (1994). SEM of 2 varieties (longan and malesianus) of 2 collections of Dimocarpus longan ssp. longan in Muller, J. (1971: Pl. IV: -2-3: areolo-rugulate tectum and 8-9: elongated and branched rugulae )

Location

Continent

Asia

Country

India

State / Province

Karnataka

County / District

Hassan

Locality

Shiradi Ghat

Ecology and Taxonomy

A large handsome tree (The longan tree), up to 1700m. Cultivated in the tropics. Leaf illustration: Pascal, J-P. & Ramesh, B.R. (1987), fig. 360. Generic description and specific [Nephelium longana (Lam.) Camb.] key in Flora of Madras: pp. 179 & 180 (Gamble, J.S., 1967)

Distribution of Species

Eastern Bengal, Burma, Western Peninsular India and Sri Lanka. Western Ghats: from S. Kanara to Tirunelveli hills up to 1700m

Distribution of Genus

5 spp., Indomal. (Willis, J.C., 1988). Keys and distribution data for 2 species in Flora of Madras: pp. 179 & 180 (Gamble, J.S., 1967)

Reuse

License

cc-by-ncCC BY-NC 4.0

Cite as

Dimocarpus longan Lour., in Digital Collections, Institut Français de Pondichéry, Pollen Slides, consulted on April, 2nd 2025, https://digitalcollections.ifpindia.org/s/ecological-specimens/item/461789