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Schefflera rostrata Harms

Metadata

Description

A group of tetrads (4 acetolysed and chlorinated and 5 acetolysed); (photographed at x250) interlinked by viscin threads

Pollen Slide N°

IFP 14482

Code

scherost

Type

Still image

Creator

IFP Team

Creation Date

[s.d.]

Publisher

Institut français de Pondichéry

License

cc-byCC BY

Metadata

Description

Note 3 pairs of co-colpi with 3 pairs of lalongate ora (photographed at x400)

Pollen Slide N°

IFP 14482

Code

scherost

Type

Still image

Creator

IFP Team

Creation Date

[s.d.]

Publisher

Institut français de Pondichéry

License

cc-byCC BY

Metadata

Description

Lower focus of Fig. 2

Pollen Slide N°

IFP 14482

Code

scherost

Type

Still image

Creator

IFP Team

Creation Date

[s.d.]

Publisher

Institut français de Pondichéry

License

cc-byCC BY

Metadata

Description

Two lower components in optical section (photographed at x400)

Pollen Slide N°

IFP 14482

Code

scherost

Type

Still image

Creator

IFP Team

Creation Date

[s.d.]

Publisher

Institut français de Pondichéry

License

cc-byCC BY

Metadata

Description

The top component in optical section

Pollen Slide N°

IFP 14482

Code

scherost

Type

Still image

Creator

IFP Team

Creation Date

[s.d.]

Publisher

Institut français de Pondichéry

License

cc-byCC BY

Metadata

Description

A tetrahedral tetrad showing a costate co-colpi and their opposing ora

Pollen Slide N°

IFP 14482

Code

scherost

Type

Still image

Creator

IFP Team

Creation Date

[s.d.]

Publisher

Institut français de Pondichéry

License

cc-byCC BY

Metadata

Description

3 components of a tetrahedral tetrad

Pollen Slide N°

IFP 14482

Code

scherost

Type

Still image

Creator

IFP Team

Creation Date

[s.d.]

Publisher

Institut français de Pondichéry

License

cc-byCC BY

Metadata

Description

SEM - Note the noodle-like viscin threads

Pollen Slide N°

IFP 14482

Code

scherost

Type

Still image

Creator

IFP Team

Creation Date

[s.d.]

Publisher

Institut français de Pondichéry

License

cc-byCC BY

Metadata

Description

SEM - Note the microruguloid pattern of para-colpal and polar ornamentation and islands of micro-ruguloid elements separated by grooves in intercolpial regions and a viscin thread

Pollen Slide N°

IFP 14482

Code

scherost

Type

Still image

Creator

IFP Team

Creation Date

[s.d.]

Publisher

Institut français de Pondichéry

License

cc-byCC BY

Metadata

Description

Mid-focus showing costae colpi separated by the circumcostal crevices and endocracks

Pollen Slide N°

IFP 14482

Code

scherost

Type

Still image

Creator

IFP Team

Creation Date

[s.d.]

Publisher

Institut français de Pondichéry

License

cc-byCC BY

Family

ARALIACEAE

Genus

Schefflera

Key

pollen_000109

Collection Object

Basis of Record

Preserved specimen

Recorded By

K. Vivekanandan

Record Number

K. Vivekanandan-40625

Collection Code

PIFP

Institution Code

IFP

Source Herbarium

MH

Code

scherost

Pollen Slide N°

Pollen Slide N°: IFP 14482

Determination

Family

ARALIACEAE

Genus

Schefflera

Specific Epithet

rostrata

Scientific Name

Schefflera rostrata Harms

Scientific Name Authorship

Harms

Genus Authorship

J.R.&G.Forst.

Morphology

Symmetry and Form

Monad, radial_symmetry, isopolar, 3-colporate, a few grains 2-colporate, elliptic ( E > P & E < P ) in equatorial_view, triangular (angulaperturate) in polar_view

Dimensions

Polar_Axis = 27-41 µm; Equatorial_Axis = 30-37 µm

Apertures

Three colpora; Colpus: furrow long and elliptic, colpus apex acute, distance between the adjacent colpal apices 7-12 µm, margo diffuse grading to fine meshes, aperture_membrane psilate; costae_colpi present; Os elliptic, lalongate, oral_costae diffuse(?)

Exine

Medium_reticulate, tectate, mur distinctly simplicolumellate, mur ±0.5 µm; lumina 1.0-1.5 µm, exine thickness at the mid-point of the intercolpium 2.0 µm

Remark

A stenopalynous genus

Tentative Pollen Typification

Schefflera type

References (Generic Palynology)

LM (micrograph) of Schefflera rostrata in Vasanthy, G. (1976); SEM of S. myriantha (reticulate exine surface) in Cerceau-Larrival, M.T., Straka, H. & Frederick, B. (1984). SEM of S. digitata in Moar, N.T. (1993, Pl. 37: figs 10-13)

Location

Continent

Asia

Country

India

State / Province

Tamil Nadu

County / District

Nilgiris

Locality

Avalanche

Maximum Elevation in Meters

2000m

Ecology and Taxonomy

A large tree in montane Shola forests, above 1800m. Generic description and specific key in Flora of Madras: pp. 401 & 402 (Gamble, J.S., 1967)

Distribution of Species

Nilgiri Hills in Kundahs (above 2000m). Map: Ramesh, B.R. & Pascal, J-P. (1997): Plate N°- 43 & 44 (2 varieties)

Distribution of Genus

200 spp., Trop. & subtrop. (Willis, J.C., 1988). Keys and distribution data for 9 species in Flora of Madras: pp. 401-403 (Gamble, J.S., 1967)

Reuse

License

cc-by-ncCC BY-NC 4.0

Cite as

Schefflera rostrata Harms, in Digital Collections, Institut Français de Pondichéry, Pollen Slides, consulted on February, 5th 2025, https://ifp.inist.fr/s/ecological-specimens/item/461863