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PalDat - Palynological Database

an online publication on recent pollen

Acaena microphylla

Taxonomy: Angiospermae, Rosales, Rosaceae, Acaena

Published: 2016-03-15

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): irregular,  outline in polar view (dry pollen): irregular,  infoldings (dry pollen): irregularly infolded,  aperture number: 3,  aperture type: colporus,  aperture condition: tricolporate, colporate,  aperture peculiarities: pontoperculum

Ornamentation and Structure

LM  ornamentation LM: -,  nexine: -,  sexine: -,  SEM  ornamentation SEM: microechinate, 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: Halbritter, Heidemarie

Pictures

polar view

1. polar view

equatorial view

2. equatorial view

detail of aperture

3. detail of aperture

exine surface

4. exine surface

dry pollen grains

5. dry pollen grains

Picture legend

  1. polar view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  2. equatorial view - 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

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  • Barrow CJ (1976) Palynological studies in South Georgia. 1. Pollen and spore morphology of the native vascular species. Brit Antarct Surv Bull 43: 63-75
  • Cranwell LM (1942) New Zealand pollen studies. - I. Key to the pollen grains of families and genera in the native flora. Rec Auckland Inst Mus 2: 280-308
  • Fischer H (1890) Beiträge zur vergleichenden Morphologie der Pollenkörner. Breslau (Thesis) : 1-72
  • Hebda RJ, Chinappa CC (1992) Studies on pollen morphology of Rosaceae. In: Abstracts. 8th International Palynological Congress, Aix-en-Provence : 61
  • Heusser CJ (1971) Pollen and Spores of Chile. Univ Arizona Press, Tucson : 1-167
  • Kuprianova LA (1940) On the pollen grains of some Rosaceae. Sovetsk Bot 3: 87-94
  • Labouriau MLS (1984) Reconstrucción del ambiente a través de los granos de polen. Sci Amer 96: 6-17
  • Labouriau MLS (1979) Modern pollen deposition in the Venezuelan Andes. Grana 18: 53-68
  • Lewis WH, Vinay P, Zenger VE (1983) Airborne and allergenic pollen of North America. The John Hopkins Univ Press, Baltimore : 254 pp
  • Markgraf V, D'Antoni HL (1978) Pollen flora of Argentina. Univ Arizona Press, Tucson : 208 pp
  • Moar NT (1993) Pollen grains of New Zealand Dicotyledonous Plants. Lincoln NZ: Manaki Whenua Press, New Zealand : 200 pp
  • Salgado-Labouriau ML (1984) Late-Quaternary palynological studies in the Venezuelan Andes. Erdwissenschaftliche Forschung 18: 279-293
  • Selling OH (1947) Studies in Hawaiian pollen statistics - part II. The pollens of the Hawaiian phanerogams. BP Bishop Museum, Special Publ 38: 1-430
  • Smit A (1978) Pollen morphology of Polylepis boyacensi Cuatrecasas, Acaena cylindristachya Ruiz et Pavon and Acaena elongata (Rosaceae) and its application to fossil material. Rev Palaeobot Palynol 25: 393-398
  • Van Zinderen BEM, Coetzee JA (1959) South African pollen grains and spores - Part III. Balkema, Cape Town : 1-200
  • Walker JW (1974) Aperture evolution in the pollen of primitive Angiosperms. Amer J Bot 61: 1112-1136
  • Wingenroth M, Heusser CJ (1985) Pollen of the High Andean flora. Quebrada Benjamin Matienzo, Province of Mendoza Argentina Instituto Argentino de Nivologia y Glaciología, Mendoza : 196 pp
  • 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. Acaena microphylla. In: PalDat - A palynological database. https://pc8.botanik.univie.ac.at/pub/Acaena_microphylla/300649;jsessionid=78CF2B87D41FA8A14CB54D6B3C2B179B; accessed 2025-01-10

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