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an online publication on recent pollen

Spilanthes acmella

Taxonomy: Angiospermae, Asterales, Asteraceae, Spilanthes

Published: 2016-11-08

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: isopolar,  P/E-ratio: -,  shape: spheroidal,  outline in polar view: circular,  dominant orientation (LM): -,  P/E-ratio (dry pollen): -,  shape (dry pollen): spheroidal,  outline in polar view (dry pollen): circular,  infoldings (dry pollen): aperture(s) sunken,  aperture number: 3,  aperture type: colporus,  aperture condition: colporate, tricolporate,  aperture peculiarities: -

Ornamentation and Structure

LMornamentation LM: echinate,  nexine: -,  sexine: -,  SEMornamentation SEM: perforate, echinate, rugulate,  suprasculpture SEM: -,  TEMtectum: -,  infratectum: -,  foot layer: -,  endexine: -,  intine: -,  wall peculiarities: -,  supratectal element: -

Miscellaneous

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

Annotations: 3- or 4-colporate

Author(s) of diagnosis: Halbritter, Heidemarie

Pictures

polar view; note 3 apertures

1. polar view; note 3 apertures

polar view; note 4 apertures

2. polar view; note 4 apertures

detail of aperture

3. detail of aperture

exine surface

4. exine surface

dry pollen grains

5. dry pollen grains

Picture legend

  1. polar view; note 3 apertures - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  2. polar view; note 4 apertures - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  3. detail of aperture - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  4. exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  5. dry pollen grains - dry, sputter coated with gold, photographer: Halbritter, H.

Literature

  • Halbritter, H (1998) Preparing living pollen material for scanning electron microscopy using 2,2-dimethoxypropane (DMP) and criticalpoint drying. Biotechnic Histochem 73: 137–143

Copyright and Citation

Cite this publication as:

Halbritter H. 2016. Spilanthes acmella. In: PalDat - A palynological database. https://www.paldat.org/pub/Spilanthes_acmella/302046;jsessionid=53F45E627D2EFC801817A8F9BFC098B2; accessed 2024-04-25

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