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PalDat - Palynological Database

an online publication on recent pollen

Laportea divaricata

Taxonomy: Spermatophyta, Urticales, Urticaceae, Laportea

Published: 2005-06-01

Pollen Description

Shape, Size and Aperture

pollen unit: monad,  dispersal unit and peculiarities: monad,  size (pollen unit): small (10-25 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: -,  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: -,  aperture condition: porate,  aperture peculiarities: -

Ornamentation and Structure

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

Miscellaneous

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

Author(s) of diagnosis: Halbritter, H.

Pictures

hydrated pollen grain

1. hydrated pollen grain

hydrated pollen grain

2. hydrated pollen grain

aperture

3. aperture

dry pollen grains

4. dry pollen grains

Picture legend

  1. hydrated pollen grain - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  2. hydrated pollen grain - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  3. aperture - fresh, rehydrated (water) & critical point dried & sputter coated with gold, photographer: Halbritter, H.
  4. dry pollen grains - dry, sputter coated with gold, photographer: Halbritter, H.

Literature

  • Bassett IJ, Crompton CW, Parmelee JA (1978) An atlas of airborne pollen grains and common fungus spores of Canada. Research Branch, Canada Dept Agriculture, Monograph 18: 321 pp
  • Bassett IJ, Crompton CW, Woodland DW (1974) The family Urticaceae in Canada. Can J Bot 52: 503-516, 1 pl
  • Chang KT (1982) Altingiaceae, Clethraceae, Coriariaceae, Geraniaceae, Hamamelidaceae, Lobeliaceae, Meliaceae, Oleaceae, Passifloraceae, Pittosporaceae, Urticaceae, Alismataceae, Commelinaceae, Orchidaceae. In: Angiosperm flora of tropic and subtropic China. Inst Bot South China : 20-21, 96-97, 110-111, 156-157, 172-179, 187-188, 208-213, 251-256, 290-291, 297-299, 383-390, 401-402, 405-408, 412-418
  • Fischer H (1890) Beiträge zur vergleichenden Morphologie der Pollenkörner. Breslau (Thesis) : 1-72
  • Hamilton AC (1976) Identification of East african Urticales pollen. Pollen et Spores XVIII: 27-66
  • Hansgirg A (1897) Beiträge zur Biologie und Morphologie des Pollens. Sitzber Böhm Ges Wiss Prag Jahrb XXIII: 1-76
  • Huang TC (1972) Pollen flora of Taiwan. National Taiwan Univ, Botany Dept Press : 297 pp
  • Ikuse M (1955) General survey list of pollen grains in Japan (2). J Jap Bot 30: 45-55
  • Ikuse M (1956) Pollen grains of Japan. Hirokawa Publishing Co, Tokyo I-XII: 1-304
  • Mandal S, Chanda S (1981) Pollen atlas of Kalyani, West Bengal, with reference to aeropalynology. Trans Bose Res Inst 44: 35-62
  • Nagamitsu T, Nagamasu H (1994) Keys for the pollen of Ashiu, Central Japan. Contrib Biol Lab Kyoto Univ 28: 261-355
  • Nair PKK, Sharma M (1965) Pollen morphological studies in Indian Urticales. Bot Not 118: 177-186
  • Nakamura J (1980) Diagnostic characters of pollen grains of Japan - I & II. Spec Publ Osaka Mus Nat Hist 12: 157 pl
  • Nakamura J (1980) Diagnostic characters of pollen grains of Japan - I & II. Spec Publ Osaka Mus Nat Hist 13: 91 pp
  • Sorsa P, Huttunen P (1975) On the pollen morphology of the Urticaceae. Ann Bot Fenn 12: 165-182
  • Straka H (1966) Palynologia Madagassica et Mascarenica Fam. 50-59. Pollen et Spores 8: 241-264
  • Straka H, Friedrich B (1984) Fam. 50-59 & 61-64. Microscopie électronique à balayage et addenda. In: Straka H. (ed) Palynologia Madagassica et Mascarenica. Addenda und REM : 5-25
  • Tarnavschi IT, Serbanescu-Jitariu G, Mitroiu N, Radulescu D (1967) Zur Pollenmorphologie der Urticales aus der Flora Rumäniens. Rev Roum Biol, Bot 12: 251-262

Copyright and Citation

Cite this publication as:

Halbritter H. 2005. Laportea divaricata. In: PalDat - A palynological database. https://www.paldat.org/pub/Laportea_divaricata/113713; accessed 2024-06-01

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