TY  - JOUR
A1  - Marcano, Vicente
A1  - Palacios-Prü, Ernesto
A1  - Morales, Antonio
T1  - Pseudohepatica duidensis : a new lichen from the Venezuelan Amazonas
T2  - Tropical bryology
N2  - 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.
N2  - 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.
Y1  - 2000
UR  - http://publikationen.ub.uni-frankfurt.de/frontdoor/index/index/docId/30426
UR  - https://nbn-resolving.org/urn:nbn:de:hebis:30:3-304261
SN  - 0935-5626
N1  - 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.
IS  - 18
SP  - 203
EP  - 212
PB  - D. Quandt, Univ. Bonn, Nees Inst. für Biodiversität d. Pflanzen
CY  - Bonn
ER  -