Thalictrum foetidum (Ranunculaceae) in the Pyrenees Thalictrum foetidum (Ranunculaceae) als Pirineus
Figures
Figures - uploaded by Pere Aymerich
Author content
All figure content in this area was uploaded by Pere Aymerich
Content may be subject to copyright.
... Comprèn hàbitats de tipus submontà, montà, subalpí i alpí, en un interval d'altituds entre 900 i més de 2500 m. Tot i ser un treball realitzat des del Parc, no s'ha inclòs la informació sobre una de les plantes d'interès especial, Thalictrum foetidum, perquè fins ara només s'ha trobat a la perifèria de la zona protegida i perquè ja ha estat objecte d'una publicació específica recent (Aymerich, 2022). ...
... SEGUIMENTS DE FLORA AL PARC NATURAL DELCADÍ-MOIXERÓ. 1995-2022 ...
Plant monitoring in Cadí-Moixeró Natural Park. 1995-2022.
This paper summarizes the assessment and monitoring of flora of special interest carried out in the Cadí-Moixeró Natural Park over the last 25 years. The list of plants of special interest of this Park currently has 50 taxa (narrow endemics, protected and/or threatened species, species with populations of high biogeographical interest). Until 2022, 31 taxa have been the target of works and 13 are regularly monitored (6 species annually).
Key words: Pyrenees, Catalonia, mountain flora, rare plants, protected species, threatened plants.
Revision of the species of Thalictrum subsectio Thalictrum (Ranunculaceae)
occurring in Europe
Summary: A revision has shown that seven species of Thalictrum subsectio Thalictrum
occur in Europe: Th. foetidum (subspecies foetidum, with one further subspecies occurring
in Eastern Asia), Th. minus (six subspecies, with two further subspecies occurring
outside Europe), Th. simplex (four subspecies, with two further subspecies occurring outside
Europe), Th. flavum, Th. speciosissimum (two subspecies), Th. maritimum and
Th. lucidum. Th. morisonii cannot be accepted as a species or subspecies. This revision is
based on field observations, cultivation of several hundred plants under standardized conditions,
and extensive study of herbarium collections. The combination of these methods
enabled the broad variability in anatomical and morphological features to be documented.
Most of the 115 new chromosome counts confirmed results from previous studies, but
many new details also emerged, e. g., the existence of tetraploid Th. minus populations in
Europe, the existence of hexaploid populations in Th. simplex, and that Th. maritimum is
tetraploid (2n = 28). Morphological variability is partly correlated with cytological differentiation
in Th. simplex, but not in Th. minus. On the other hand, several taxa of the latter
species differ in their flowering seasons. The frequently postulated hybridization of taxa
was reconfirmed cytologically.
The enormous plasticity of morphological characters and the marked tendency to
evolve slightly different local populations require a broad concept for classifying the species
and subspecies of Thalictrum. Generally, subsection Thalictrum has few defining
features, thus even some of the taxa accepted in the current revision are difficult to differentiate.
The use of the rank variety does not appear appropriate.
For the first time, all available specific and infraspecific names down to the rank of
variety (about 1300 names) have been assessed nomenclaturally. Many controversial names
were typified so as to stabilize their application.
The results of this study enable an initial interpretation of the phylogeny of Thalictrum
subsectio Thalictrum. Th. foetidum stands isolated because of its markedly different
achenes. Entomophilous taxa of this otherwise mainly anemogamous subsection (highest
diversity in Eastern Asia) are found only in Europe and the Mediterranean area, which
constitute a secondary centre of diversification. Many details of the concepts discussed
for the genus Thalictrum are still debatable, e. g. the monophyly of subsection Thalictrum.
Thus a revision of further Old World taxa and detailed molecular investigations of
the entire genus are needed.
Llista Vermella de la flora vascular de Catalunya
- P Aymerich
- L Sáez
Aymerich, P. & Sáez, L. 2021. Llista Vermella de la flora vascular
de Catalunya. Actualització 2020. Monografies de la ICHN, 2.
100 p.
- O Bolos
- J Vigo
Bolos, O. & Vigo, J. 1984. Flora dels Països Catalans. Vol. 1. Ed.
Barcino. Barcelona. 736 p.
Flore de la France méditerranéenne continentale. Conservatoire Botanique National Méditerranéen de Porquerolles
- J M Tison
- P Jauzein
- H Michaud
Tison, J. M., Jauzein, P. & Michaud, H. 2014. Flore de la France
méditerranéenne continentale. Conservatoire Botanique National
Méditerranéen de Porquerolles. Naturalia Publications. Turriers.
2078 p.