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PalDat - Palynological Database

an online publication on recent pollen

Crataegus tanacetifolia

Taxonomy: Angiospermae, Rosales, Rosaceae, Maloideae, Crataegus

Annotations: Crataegus tanacetifolia (Lam.) Pers. is an important endemic species to Turkey and widely spreads in Bolu, Karabük, Kastamonu and Ankara. It is economically valuable plant for having edible fruits.

Published: 2020-05-15

Pollen Description

Shape, Size and Aperture

pollen unit: monad,  dispersal unit and peculiarities: monad,  size (pollen unit): large (51-100 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: triangular,  dominant orientation (LM): -,  P/E-ratio (dry pollen): prolate,  shape (dry pollen): -,  outline in polar view (dry pollen): -,  infoldings (dry pollen): -,  aperture number: 3,  aperture type: colporus,  aperture condition: colporate, tricolporate,  aperture peculiarities: -

Ornamentation and Structure

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


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

Author(s) of diagnosis: Cetinbas-Genc, Aslihan



1. inflorescence(s)


2. flower(s)

polar view

3. polar view

polar view

4. polar view

exine surface

5. exine surface

Picture legend

  1. inflorescence(s), photographer: Cetinbas-Genc, A.
  2. flower(s), photographer: Cetinbas-Genc, A.
  3. polar view - fixed, formalin-acetic-alcohol, toluidine blue, photographer: Cetinbas-Genc, A.
  4. polar view - fixed, formalin-acetic-alcohol & sputter coated with gold, photographer: Cetinbas-Genc, A.
  5. exine surface - fixed, formalin-acetic-alcohol & sputter coated with gold, photographer: Cetinbas-Genc, A.


    Copyright and Citation

    Cite this publication as:

    Cetinbas-Genc A. 2020. Crataegus tanacetifolia. In: PalDat - A palynological database.;jsessionid=5DA4D085D2C71192E83DC8A95F5B6275; accessed 2021-01-19