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PalDat - Palynological Database

an online publication on recent pollen

Ulmus minor

Taxonomy: Angiospermae, Rosales, Ulmaceae, Ulmus

Links: http://flora.nhm-wien.ac.at/Seiten-Arten/Ulmus-minor.htm

Published: 2020-10-05

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): 26-30 µm,  shortest polar axis in equatorial view (LM): -,  longest polar axis in equatorial view (LM): -,  shortest diameter in equatorial or polar view (LM): 26-30 µm,  longest diameter in equatorial or polar view (LM): 26-30 µm,  pollen class: porate,  polarity: heteropolar,  P/E-ratio: isodiametric,  shape: spheroidal,  outline in polar view: circular,  dominant orientation (LM): oblique,  P/E-ratio (dry pollen): -,  shape (dry pollen): irregular,  outline in polar view (dry pollen): irregular,  infoldings (dry pollen): irregularly infolded,  aperture number: 5,  aperture type: porus,  aperture condition: porate,  aperture peculiarities: operculum

Ornamentation and Structure

LM  ornamentation LM: gemmate, verrucate, scabrate,  nexine: -,  sexine: -,  SEM  ornamentation SEM: granulate, verrucate, rugulate,  suprasculpture SEM: -,  TEM  tectum: eutectate,  infratectum: granular,  foot layer: absent,  endexine: compact-continuous,  intine: monolayered,  wall peculiarities: -,  supratectal element: -

Miscellaneous

pollen coatings: absent,  reserves in cytoplasm: starch,  cell number: 3-celled,  Ubisch bodies: present

Annotations: number of apertures varies from 5 to 6; dry pollen often cup-shaped; endexine not thickened in aperture

Author(s) of diagnosis: Halbritter, Halbritter; Diethart, Bernadette; Heigl, Helmut

Pictures

flower(s)

1. flower(s)

flower(s)

2. flower(s)

pollen grain with vegetative nucleus and two sperm cells

3. pollen grain with vegetative nucleus and two sperm cells

upper focus

4. upper focus

optical section

5. optical section

lower focus

6. lower focus

hydrated Pollen

7. hydrated Pollen

hydrated Pollen

8. hydrated Pollen

hydrated Pollen

9. hydrated Pollen

polar view

10. polar view

equatorial view

11. equatorial view

aperture

12. aperture

exine surface

13. exine surface

dry pollen grains

14. dry pollen grains

dry pollen grains

15. dry pollen grains

polar view (dry pollen grain)

16. polar view (dry pollen grain)

dry pollen grain in equatorial view

17. dry pollen grain in equatorial view

anther wall with Ubisch bodies

18. anther wall with Ubisch bodies

pollen grain in cross section

19. pollen grain in cross section

interapertural area of pollen wall

20. interapertural area of pollen wall

apertural area of pollen wall

21. apertural area of pollen wall

Ubisch bodies on inner anther wall

22. Ubisch bodies on inner anther wall

mitochondria and dictyosom in vegetative cytoplasm

23. mitochondria and dictyosom in vegetative cytoplasm

Picture legend

  1. flower(s), photographer: Diethart, B.
  2. flower(s), photographer: Halbritter, H.
  3. pollen grain with vegetative nucleus and two sperm cells - fresh, unfixed, aceto-carmine, photographer: Diethart, B.
  4. upper focus - fresh, acetolyzed, unstained, photographer: Diethart, B.
  5. optical section - fresh, acetolyzed, unstained, photographer: Diethart, B.
  6. lower focus - fresh, acetolyzed, unstained, photographer: Diethart, B.
  7. hydrated Pollen - fresh, glycerine, unstained, photographer: Heigl, H.
  8. hydrated Pollen - fresh, glycerine, ruthenium red, photographer: Heigl, H.
  9. hydrated Pollen - fresh, glycerine, ruthenium red, photographer: Heigl, H.
  10. polar view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  11. equatorial view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  12. aperture - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  13. exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  14. dry pollen grains - dry, sputter coated with gold, photographer: Diethart, B.
  15. dry pollen grains - dry, sputter coated with gold, photographer: Halbritter, H.
  16. polar view (dry pollen grain) - dry, sputter coated with gold, photographer: Diethart, B.
  17. dry pollen grain in equatorial view - dry, sputter coated with gold, photographer: Diethart, B.
  18. anther wall with Ubisch bodies - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Diethart, B.
  19. pollen grain in cross section - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Diethart, B.
  20. interapertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Diethart, B.
  21. apertural area of pollen wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Diethart, B.
  22. Ubisch bodies on inner anther wall - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Diethart, B.
  23. mitochondria and dictyosom in vegetative cytoplasm - fresh, glutaraldehyde & osmium & potassium ferrocyanide, modified Thiéry-test, photographer: Diethart, B.

Literature

  • Lian YH (1982) Apocynaceae, Bignoniaceae, Goodeniaceae, Lardizabalaceae, Menispermaceae, Nyctaginaceae, Papilionaceae, Rubiaceae, Samydaceae, Santalaceae, Sargentodoxaceae, Simaroubaceae, Thymelaeaceae, Ulmaceae. In: Angiosperm pollen flora of tropic and subtropic China. Inst Bot South China : 34-48, 60-65, 165-166, 183-186, 213-217, 244-246, 265-289, 305-325, 335-339, 351, 353-355, 375-377, 381-383
  • Maloney BK (1984) Pollen of Ulmus (Ulmaceae) in the subfossil record from North Sumatra - a note. Blumea 30: 69-70
  • Monoszon MC (1959) A description of the pollen of representatives of the family Ulmaceae growing in the USSR. Tr Inst Geogr Acad Nauk, USSR 77: 187-198
  • Richard P (1970) Atlas pollinique des arbres et de quelques arbustes indigènes du Quebec - III. Angiosperms (Salicacées, Myricacées, Juglandacées, Corylacées, Fagacées, Ulmacées). Nat Canad 97: 97-161
  • Rowley JR, Rowley JS (1983) Modification of the exine during germination of pollen grains of Ulmus. In: Mulcahy D.L., Ottaviano E. (eds) Pollen biology and implications for plant breeding. Elsevier Sci Publ Co : 173-182
  • Rowley JR, Rowley JS (1986) Ontogenetic development of microspores of Ulmus (Ulmaceae). In: Blackmore S., Ferguson I.K. (eds) Pollen and spores: Form and Function. Acad Press, London : 19-33
  • Stafford PJ (1995) The Northwest European Pollen Flora, 53. Ulmaceae. Rev Palaeobot Palynol 88: 25-46
  • Stockmarr J (1970) Species identification of Ulmus pollen. Dan Geol Unders 4: 1-19
  • Stockmarr J (1975) SEM studies on pollen grains of Northern European Ulmus species. Grana 14: 103-107
  • Takahashi M (1989) Pollen morphology of Celtidaceae and Ulmaceae: a reinvestigation. In: Evolution, Systematics, and fossil History of the Hamamelidae. Vol 2: 'Higher'
  • Zavada MS, Kim M (1996) Phylogenetic analysis of Ulmaceae. Pl Syst Evol 200: 13-20
  • Adler W, Oswald K, Fischer R. (1994) Exkursionsflora von Österreich : 1180
  • 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., Diethart B., Heigl H. 2020. Ulmus minor. In: PalDat - A palynological database. https://pc8.botanik.univie.ac.at/pub/Ulmus_minor/303775;jsessionid=5BCEE2FE50752140BD3ACEB5E4B74358; accessed 2025-01-25

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