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an online publication on recent pollen

Actaea spicata

Taxonomy: Angiospermae, Ranunculales, Ranunculaceae, Actaea

Published: 2016-10-21

Pollen Description

Shape, Size and Aperture

pollen unit: monad,  dispersal unit and peculiarities: monad,  size (pollen unit): medium-sized (26-50 µm),  pollen class: colpate,  polarity: isopolar,  shape: spheroidal,  outline in polar view: circular,  shape (dry pollen): prolate,  outline in polar view (dry pollen): lobate,  infoldings (dry pollen): aperture(s) sunken,  aperture number: 3,  aperture type: colpus,  aperture condition: colpate, tricolpate,  aperture peculiarities: aperture membrane ornamented

Ornamentation and Structure

LMornamentation LM: scabrate,  nexine: -,  sexine: -,  SEMornamentation SEM: microechinate, perforate,  TEMtectum: eutectate,  infratectum: columellate,  foot layer: continuous,  endexine: compact-continuous,  intine: monolayered,  wall peculiarities: -

Miscellaneous

pollen coatings: pollenkitt,  reserves in cytoplasm: starch, lipids,  cell number: 2-celled,  Ubisch bodies: present

Author(s) of diagnosis: Oberschneider, Wolfgang

Pictures

flower(s)

1. flower(s)

upper focus

2. upper focus

optical section

3. optical section

lower focus

4. lower focus

generative cell (dark) and vegetative nucleus

5. generative cell (dark) and vegetative nucleus

polar view

6. polar view

equatorial view

7. equatorial view

detail of aperture

8. detail of aperture

exine surface

9. exine surface

polar view of dry pollen grain

10. polar view of dry pollen grain

dry pollen grain in equatorial view

11. dry pollen grain in equatorial view

pollen wall (interapertural area)

12. pollen wall (interapertural area)

aperture with ornamented colpus membrane

13. aperture with ornamented colpus membrane

pollen wall (left) and tapetum wall with Ubisch bodies (right)

14. pollen wall (left) and tapetum wall with Ubisch bodies (right)

Picture legend

  1. flower(s), photographer: Oberschneider, W.
  2. upper focus - fresh, acetolyzed, unstained, photographer: Oberschneider, W.
  3. optical section - fresh, acetolyzed, unstained, photographer: Oberschneider, W.
  4. lower focus - fresh, acetolyzed, unstained, photographer: Oberschneider, W.
  5. generative cell (dark) and vegetative nucleus - fresh, unfixed, aceto-carmine, photographer: Oberschneider, W.
  6. polar view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Oberschneider, W.
  7. equatorial view - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Oberschneider, W.
  8. detail of aperture - fresh, critical point dried & rehydrated (water) & sputter coated with gold, photographer: Oberschneider, W.
  9. exine surface - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Oberschneider, W.
  10. polar view of dry pollen grain - dry, sputter coated with gold, photographer: Oberschneider, W.
  11. dry pollen grain in equatorial view - dry, sputter coated with gold, photographer: Oberschneider, W.
  12. pollen wall (interapertural area) - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Oberschneider, W.
  13. aperture with ornamented colpus membrane - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Oberschneider, W.
  14. pollen wall (left) and tapetum wall with Ubisch bodies (right) - fresh, glutaraldehyde & osmium & potassium ferrocyanide, uranyl acetate & lead citrate, photographer: Oberschneider, W.

Literature

  • Clarke GCS, Punt W, Hoen PP (1991) The Northwest European Pollen Flora, 51. Ranunculaceae. Rev Palaeobot Palynol 69: 117-271
  • Daumann E (1969) Zur Blütenmorphologie und Bestäubungsökologie einiger Ranunculaceen (Cimicifuga L., Actaea L., Thalictrum L.). Preslia 41: 213-219
  • Khan HA (1991) Palynotaxonomy and phylogeny of Ranunculaceae. Geophytology 21: 207-210
  • Mkrtchyan SS, Agababian VC (1978) On the palynomorphological types of the Armenian Rununculaceae. Biol Zh Armenii 31: 219-222, 5 pl
  • Oberschneider W (1998) Pollenmorphologie der Ranunculanae. Diplomarbeit. Universität Wien : 125 pp
  • Petrov S, Ivanova OB (1981) Palynomorphological characteristics of the Bulgarian representatives of the family Ranunculaceae VII & VIII. Phytology (Bulg Acad Sci) 17: 3-32
  • Petrov S, Ivanova OB (1980) Palynomorphological characteristics of the Bulgarian representatives of the family Ranunculaceae Juss. IV. Phytology (Bulg Acad Sci) 14: 3-50
  • Tarnavschi IT, Mitroiu N (1962) Recherches palynologiques sur les Renonculacées de la R.P. Roumaine. In: Problème de Biologie. Edit Acad Rep Popul Romine : 79-122
  • Vishnu-Mittre, Sharma BD (1963) Studies of Indian pollen grains - II. Ranunculaceae. Pollen et Spores 5: 285-296
  • Wang XQ, Hong DY, Li ZY (1993) A study on pollen and seed coat in the tribe Cimicifugeae and some allied genera (Ranunculaceae). Cathaya 5: 131-149
  • Wodehouse RP (1936) Pollen grains in the identification and classification of plants - VII. Ranunculaceae. Bull Torrey Bot Club 63: 495-514
  • 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:

Oberschneider W. 2016. Actaea spicata. In: PalDat - A palynological database. https://www.paldat.org/pub/Actaea_spicata/301712;jsessionid=B5D1AFF69394AD4B68D72B257881CC82; accessed 2018-11-18

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