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PalDat - Palynological Database

an online publication on recent pollen

Gomesa bifolia

Taxonomy: Angiospermae, Asparagales, Orchidaceae, Gomesa

Links: https://tropicos.org/name/100441731, http://conosur.floraargentina.edu.ar/species/details/193570;, https://species.wikimedia.org/wiki/Gomesa_bifolia

Annotations: Duck orchid, one of the southernmost epiphytic orchids (between 0-2000 meters above sea level) native to Argentina, withstands cold (5 to 30 degrees), and can be planted in trees, dry branches, and in pots

Published: 2025-09-09

Pollen Description

Shape, Size and Aperture

pollen unit: pollinium,  dispersal unit and peculiarities: pollinarium,  size (pollen unit): very large (>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: inaperturate,  polarity: heteropolar,  P/E-ratio: -,  shape: -,  outline in polar view: -,  dominant orientation (LM): -,  P/E-ratio (dry pollen): -,  shape (dry pollen): -,  outline in polar view (dry pollen): -,  infoldings (dry pollen): -,  aperture number: none,  aperture type: no aperture,  aperture condition: -,  aperture peculiarities: -

Ornamentation and Structure

LM  ornamentation LM: -,  nexine: -,  sexine: -,  SEM  ornamentation SEM: -,  suprasculpture SEM: -,  TEM  tectum: -,  infratectum: -,  foot layer: -,  endexine: -,  intine: -,  wall peculiarities: -,  supratectal element: -

Miscellaneous

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

Annotations: Anther carries at its end a retinaculum that supports the pollinarium formed by two yellow, cartilaginous globose pollinia (pollen masses) joined by a hyaline caudicle to a dark viscidium.

Author(s) of diagnosis: di Pasquo, Maria de las Mercedes

Pictures

habitus,flower(s)

1. habitus, flower(s)

habitus

2. habitus

habitus,flower(s)

3. habitus, flower(s)

detail of flower(s)

4. detail of flower(s)

sperm cells

5. sperm cells

dry pollen

6. dry pollen

dry pollen

7. dry pollen

dry pollen

8. dry pollen

dry pollen

9. dry pollen

dry pollen

10. dry pollen

dry pollen

11. dry pollen

dry pollen

12. dry pollen

Picture legend

  1. habitus, flower(s), photographer: di Pasquo Mercedes
  2. habitus, photographer: di Pasquo Mercedes
  3. habitus, flower(s), photographer: di Pasquo Mercedes
  4. detail of flower(s), photographer: di Pasquo Mercedes
  5. sperm cells - dry, unfixed, unstained, photographer: di Pasquo Mercedes
  6. dry pollen - fresh, unfixed, photographer: di Pasquo Mercedes
  7. dry pollen - dry, unfixed, photographer: di Pasquo Mercedes
  8. dry pollen - dry, unfixed, photographer: di Pasquo Mercedes
  9. dry pollen - dry, unfixed, photographer: di Pasquo Mercedes
  10. dry pollen - dry, unfixed, photographer: di Pasquo Mercedes
  11. dry pollen - dry, unfixed, photographer: di Pasquo Mercedes
  12. dry pollen - dry, unfixed, photographer: di Pasquo Mercedes

Literature

  • Aliscioni, S.S.; Torretta, J.P.; Bello, M.E.; Galati, B.G (2009) Elaiophores in Gomesa bifolia (Sims) M.W. Chase & N.H. Williams (Oncidiinae: Cymbidieae: Orchidaceae): structure and oil secretion Annals Botany 104: 1141-1149
  • Johnson, E (2001) Las orquídeas del Parque Nacional Iguazú : 296
  • Silvestri, L., di Pasquo, M., Fernández Pacella, L., Gómez, J., Martínez Marignac, V., Di Nardo, J., Alva, L.R. (2023) Catálogo polínico de especies de plantas cultivadas y nativas de la provincia de Entre Ríos con énfasis en las regiones de Diamante y Colón (PARTE II) Boletín ALPP 23: 142-166

Copyright and Citation

Cite this publication as:

di Pasquo M., di Pasquo Mercedes 2025. Gomesa bifolia. In: PalDat - A palynological database. https://www.paldat.org/pub/Gomesa_bifolia/306854;jsessionid=967D358D344E314CFC8F43504BC8DEFD; accessed 2025-09-12