Pseudohepatica duidensis : a new lichen from the Venezuelan Amazonas
- The species Pseudohepatica duidensis Marcano, Palacios & Morales is described from the Venezuelan Amazonas. Special attention has been paid to the morphology and the chemistry (e.g. polysaccharides and secondary compounds), using scanning electron microscopy (SEM), thin-layer chromatography (TLC, HPTLC) and iodine reagent tests. Pseudohepatica duidensis is characterized by a very small (to 1 mm long), yellowish-green thallus, non-pored epicortex, yellowish lower surface with soredial protuberances, paraplectenchymatous upper cortex consisting of strongly sclerotic cells, cell walls with iodine reactions characteristic of lichenan and gyrophoric acid as relevant chemical constituent.
- Se describe la especie Pseudohepatica duidensis Marcano, Palacios & Morales procedente del Amazonas Venezolano. Una atención especial es puesta en la morfología y en la química (e.g. polisacáridos y compuestos secundarios), utilizando microscopía electrónica de barrido (SEM), cromatografía de capa fina (TLC, HTLC) y pruebas con reactivos de yodo. Pseudohepatica duidensis está caracterizada por presentar un talo pequeño (hasta 1 mm de largo), verdo-amarillento, epicortex no-poreado, superficie inferior amarillenta mostrando protuberancias sorediales, y cortex superior paraplectenquimatoso consistiendo de células fuertemente esclerotizadas, paredes celulares con reacciones de yodo características de liquenina, y ácido girofórico como constituyente químico relevante.
Author: | Vicente Marcano, Ernesto Palacios-PrüGND, Antonio Morales |
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URN: | urn:nbn:de:hebis:30:3-304261 |
ISSN: | 0935-5626 |
Parent Title (English): | Tropical bryology |
Publisher: | D. Quandt, Univ. Bonn, Nees Inst. für Biodiversität d. Pflanzen |
Place of publication: | Bonn |
Document Type: | Article |
Language: | English |
Year of Completion: | 2000 |
Year of first Publication: | 2000 |
Publishing Institution: | Universitätsbibliothek Johann Christian Senckenberg |
Release Date: | 2013/07/31 |
Issue: | 18 |
Page Number: | 10 |
First Page: | 203 |
Last Page: | 212 |
Note: | The layout of the electronic version of this contribution differs from the layout of the original version published in the printed volume. Page numbers given in the metadata refer to the electronic version. Page numbers of the original version of this contribution in the printed volume are: 203-211. |
HeBIS-PPN: | 34921154X |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 58 Pflanzen (Botanik) / 580 Pflanzen (Botanik) |
Sammlungen: | Sammlung Biologie / Sondersammelgebiets-Volltexte |
Zeitschriften / Jahresberichte: | Tropical Bryology / Tropical Bryology, Volume 18 (2000) |
: | urn:nbn:de:hebis:30:3-301515 |
Licence (German): | Deutsches Urheberrecht |