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PalDat - Palynological Database

an online publication on recent pollen

Senna obtusifolia

Taxonomy: Angiospermae, Fabales, Fabaceae, Caesalpinioideae, Senna

Annotations: Senna obtusifolia (L.) H.S.Irwin & Barneby

Published: 2026-11-05

Pollen Description

Shape, Size and Aperture

pollen unit: monad,  dispersal unit and peculiarities: monad,  size (pollen unit): medium-sized (26-50 µm),  size of hydrated pollen (LM): -,  shortest polar axis in equatorial view (LM): -,  longest polar axis in equatorial view (LM): -,  shortest diameter in equatorial or polar view (LM): -,  longest diameter in equatorial or polar view (LM): -,  pollen class: colporate,  polarity: -,  P/E-ratio: -,  shape: -,  outline in polar view: -,  dominant orientation (LM): -,  P/E-ratio (dry pollen): isodiametric,  shape (dry pollen): triangular pyramid,  outline in polar view (dry pollen): lobate,  infoldings (dry pollen): aperture(s) sunken,  aperture number: 3,  aperture type: colporus,  aperture condition: tricolporate, colporate,  aperture peculiarities: -

Ornamentation and Structure

LM  ornamentation LM: -,  nexine: -,  sexine: -,  SEM  ornamentation SEM: perforate, verrucate,  suprasculpture SEM: -,  TEM  tectum: -,  infratectum: -,  foot layer: -,  endexine: -,  intine: -,  wall peculiarities: -,  supratectal element: -

Miscellaneous

pollen coatings: -,  reserves in cytoplasm: -,  cell number: -,  Ubisch bodies: -

Author(s) of diagnosis: Isaac, Park; Subler, Abigail

Pictures

habitus

1. habitus

polar view

2. polar view

equatorial view

3. equatorial view

Picture legend

  1. habitus, photographer: Abigail Subler
  2. polar view - dry, sputter coated with gold, photographer: Abigail Subler
  3. equatorial view - dry, sputter coated with gold, photographer: Abigail Subler

Literature

    Copyright and Citation

    Cite this publication as:

    Isaac P., Subler A., Abigail Subler 2026. Senna obtusifolia. In: PalDat - A palynological database. /pub/Senna_obtusifolia/307103; accessed 2026-11-05