Pedro Luis Pérez de Paz

Universidad de La Laguna | ULL · Department of Plant Biology

Island species are particularly vulnerable to extinction and decline due to a range of factors, including isolation, small population sizes, climate change, or the introduction of alien species. Given their high levels of biodiversity, the preservation and protection of island endemic species are fundamental to reducing the loss of global diversity...

It is the final report about the 1:20.000 digital vegetation map of the Canary Islands. It describes the main plant communities of the islands and the main cartographic characteristics of the map. Published by GRAFCAN. Santa Cruz de Tenerife. The cartography can be accesed in URL: GRAFCAN / VISOR / Contenido /Caracterización del Suelo. Mapa de Vege...

The nomenclature of the Canary Island endemic palm with red‐bluish fruits is reviewed. Phoenix senegalensis is neotypified; P. canariensis var. porphyrococca is lectotypified. “Fulchironia senegalensis” is a nomen nudum; P. menieri is a nomen superfluum.

Bethencourtia Choisy ex Link is an endemic genus of the Canary Islands and comprises three species. Bethencourtia hermosae and Bethencourtia rupicola are restricted to La Gomera, while Bethencourtia palmensis is present in Tenerife and La Palma. Despite the morphological differences previously found between the species, there are still taxonomic in...

Recently, the authors presented a proposal to conserve the names Micromeria varia Bentham (1834: 374) with a conserved type and M. hyssopifolia Webb & Berthelot (1844: 72) against Thymus ericifolius Roth (1800: 50) (Puppo et al. 2014a) to avoid disruption of current usage of these two well established names. This proposal, however, was not recommen...

Sixteen species of the genus Cladonia are reported from Macaronesia from the Canary Islands. Three species are new to canarian flora and, two of them new to Macaronesia. The chemical variation of the taxa is reported. A phytogeographic distribution of the taxa with data on their habitat and ecology are presented.

Here we reconstruct the evolutionary history of Micromeria in the Canary Islands using eight nuclear markers. Our results show two centers of diversification for Micromeria, one in the eastern islands Gran Canaria and Lanzarote, the other in the western islands, Tenerife, La Palma and El Hierro. Suggested directions of inter-island colonization are...

Caloplaca nigrocarpa sp. nov. found on bark of canary willow from the Canary Islands is described as new to science. A description of the species is given together with notes on its chemistry, distribution, ecology and taxonomy. related lichen taxa are discussed briefly and a key to the Macaronesian species of the genus Caloplaca s.l. with brown-bl...

Se tratan 11 tacones de líquenes epífitos de notable intereses florístico y cronológico: Chaenotheca chrysocephala, Degelia ligulata, Hypotrachyna taylorensis, Lecanora conizaeoides, L. hybocarpa, Leptogium aragonii, L. tenuissimum, Ochrolechia balcanica, Pertusaria slesvicensis, Thelotrema saxatile y Usnea chaetophora. Se incluyen datos biológicos...

Ethnopharmacological relevance: Sambucus palmensis Link is an endemic species of the Canary Islands, popularly known as "Saúco canario". This species has wide use in folk medicine practice on the islands, especially as analgesic and anti-inflammatory. So the aim of our study is to evaluate the antinociceptive and anti-inflammatory activity of an a...

AimUsing phylogenetic and morphometric approaches, our study aims to understand the diversification process of the two groups of Micromeria species in Tenerife: the species restricted to the palaeoislands, and the species widely distributed in the younger part of the island.LocationTenerife, Canary Islands.Methods We calculated a calibrated phyloge...

Vahliella isidioidea, found on consolidated soil in the laurel forest from the Canary Islands is described as new to science. a description of the species is given together with notes on its chemistry, distribution, ecology and taxonomy. Possible related lichen taxa are discussed briefly and a key to the Macaronesian species of Vahliella and morpho...

The salic pine forest of Tenerife is characterized from a chorological, floristic and bioclimatic point of view, and the new association Morello fayae-Pinetum canariensis is described.

Islands offer an interesting framework in which to study the effect of geographical isolation on population genetic differentiation. For plant species with high dispersal abilities, however, oceanic barriers may not represent a factor promoting strong population structure. In this work, we analysed seven nuclear microsatellite loci in Ilex (Aquifol...

Pertusaria etayoi, found on lava flows and basaltic rocks from the Canary Islands, is described as new to science. It is the only species in the group of saxicolous Pertusaria with verruciform apothecia and 2 rough-walled ascospores to contain thiophaninic acid. A description of the species is given together with notes on its chemistry, distributio...

Diploschistes albopruinosus is described as new to science. This species is found on siliceous rocks in La Caldera de Taburiente National Park (La Palma, Canary Islands). A description of the species is given together with notes on its chemistry, distribution, ecology and taxonomy. Related lichen taxa are discussed.

The water soluble portion of the aerial parts of Hypericum canariense L. yielded after acetylation the 5,7,3′4′-tetra- and 7,3′4′-triacetates of a new flavonoid 5,7,3′,4′-tetrahydroxy-3-O-β-d-(methyl 2,3,4-triacetoxypyranuronyl)-quercetin, the 3′-acetate of a new flavonoid 3′-hydroxy-5,7,4′-trimethoxy-3-O-β-d-(methyl 2,3,4-triacetoxypyranuronyl)-qu...

This is a response to critical comments concerning the inappropriate use of the potential natural vegetation (PNV) concept made in a recent contribution to the Commentary section of this journal. We consider that the PNV concept has been misinterpreted. PNV has been used extensively in several European countries since the mid-1950s and was never in...

Tephromela follmannii, found on basaltic rocks on the Canary Islands, is described as new to science. A description of the species is provided, together with notes on its chemistry, distribution, ecology, and taxonomy. Possible related taxa are discussed briefly.

Xanthoparmelia teydea is described as new to science. This new species was found on basaltic rocks in the high mountains of the Canary Islands, in El Teide National Park (Tenerife Island). A description of the species is given together with notes on its chemistry, distribution, ecology and taxonomy. Possible associated taxa are briefly discussed.

Pertusaria aceroae and Pertusaria calderae from the Canary Islands are described as new to science. A description of each species is given together with notes on their chemistry, distribution, ecology and taxonomy. Related lichen taxa are discussed.

Contribution to the study of the class Polygono-Poetea annuae RivasMartínez 1975 in the Canary Islands. The study of communities of the class Polygono-Poetea annuae RivasMartínez 1975 in the Canary Islands is undertaked and the new association Polycarpo-Cotuletum australis is described, with three subassociations: cotuletosum australis, trifolietos...

Five species of lichens are reported as new to the Macaronesian Region from the Canary Islands, some of remarkable floristic and chorological importance which make it possible to establish interesting connections between disjunctive distribution areas. Ecological data mainly based on our own observation are included, with emphasis on the diagnostic...

Five species of lichens are reported as new to the Macaronesian Region from the Canary Islands, some of remarkable floristic and choro- logical importance which make it possible to establish interesting connections between disjunctive distribution areas. Ecological data mainly based on our own observation are included, with emphasis on the diagnost...

Se tratan 15 taxones de notable interés florístico y corológico, que permiten establecer interesantes conexiones entre áreas de distribución disjunta. Se incluyen datos ecológicos basados fundamentalmente en observaciones propias, y se resaltan los caracteres taxonómicos más llamativos para el reconocimiento de las especies. Asimismo se comentan br...

An ethanolic extract of the aerial parts of Delphinium staphisagria L. from Tenerife yielded four new flavonol glycosides 2″-acetylastragalin, 2″-acetylpaeonoside, quercetin 3-O-(2-acetyl-β-glucopyranoside)-7-O-β-glucopyranoside and 2″-acetylpetiolaroside in addition to astragalin, isoquercitrin, paeonoside, kaempferol 3-O-β-glucopyranoside-7-O-α-r...

A comparative study of the summit of La Palma and Tenerife from a bioclimatic, floristic and phytocoenotic viewpoint is carried out. Three new alliances are described: Plantaginion webbii Martín Osorio, Wildpret & Rivas Martínez all. nova, Juniperion cedri Martín Osorio, Wildpret & Rivas Martínez all. nova and Violion cheiranthifoliae Voggenreiter...

Amaranthus retroflexus L., Calendula officinalis L. and Hippocrepis constricta Kunze are new additions to the vascular flora of El Hierro. Chamaesyce maculata (L.) Small., Convolvulus siculus L. subsp. agrestis (Hochst. ex Schweinf.) Verdc. and Heliotropium curassavicum L. are new additions to the vascular flora of Tenerife. Verbascum virgatum Stok...

The Canary Islands have been a focus for phylogeographic studies on the colonization and diversification of endemic angiosperm taxa. Based on phylogeographic patterns, both inter island colonization and adaptive radiation seem to be the driving forces for speciation in most taxa. Here, we investigated the diversification of Micromeria on the Canary...

The volatiles from the fruits of Ammodaucus leucotrichus subsp. leucotrichus and subsp. nanocarpus (two endemic species, the first from North Africa and the second from the Canary Islands, Spain) were studied by gas chromatography and gas chromatography-mass spectrometry. The major components of the volatiles of subsp. nanocarpus were found to be,...

The essential oils from the aerial parts of Pimpinella anagodendron Bolle and Pimpinella rupicola Svent., two endemic species growing in Tenerife, Canary Islands, Spain, were studied by gas chromatography and gas chromatography-mass spectrometry. The major components of the flowering tops (flowers+unripe fruits) of P. rupicola (PRFT) were found to...

Se hace un breve recorrido histórico por la cartografía de la vegetación canaria durante los últimos 50 añas. Se incide en la situación actual, la metodología de trabajo utilizada, resultados, y aplicaciones más relevantes. Además se incluyen unas reflexiones personales relacionadas con «Las Rivas» y la Botánica, motivo alegórico del Seminario. The...

The essential oil from the aerial parts of Pimpinella junoniae Ceb. & Ort., growing in La Gomera, Canary Islands, Spain, was studied by gas chromatography and gas chromatography-mass spectrometry, and 43 constituents were identified. The major components were found to be alpha-zingiberene (20.6%), alpha-pinene (17.9%), (E)-beta-farnesene (9.3%), ar...

The essential oil from the aerial parts of Rutheopsis herbanica (Bolle) Hans. & Kunk., growing in Fuerteventura, Canary Islands, Spain, was studied by gas chromatography and gas chromatography-mass spectrometry, and 42 constituents were identified. The major components were found to be alpha-pinene (29.4%), dillapiole (21.3%), limonene (14.1%), bet...

Se tratan 30 táxones, algunos de notable interés florístico y corológico, que permiten establecer interesantes conexiones entre áreas de distribución disjunta. Se incluyen datos ecológicos basados fundamentalmente en observaciones propias, y se resaltan los caracteres taxonómicos más llamativos para el reconocimiento de las especies. Nueve de las c...

The oil constituents from the roots, fruits, leaves and stems of Pimpinella cumbrae Link gathered in the Canary Islands, Spain, have been studied by GC and GC–MS in combination with retention indices. The major constituents in the root oil were found to be isokessane (17%), β-dihydroagarofuran (15%), 2-methyl-butyric acid (10%), geijerene (10%) and...

A steam distilled oil obtained from the aerial parts of Teucrium heterophyllum L'Hér., grown in la Palma, Canary Islands, was analyzed by capillary GC and GC/MS. Fifty nine components were characterized representing 94% of the oil. The oil contained α-pinene (8.5%), β-caryophyllene (15.1%) and (E)-α-bisabolene (20.8%) as major constituents.

A steam distilled oil obtained from the fruits of Astydamia latifolia grown in Tenerife, Canary Islands, was analyzed by GC and GC/MS. Twenty-six components were characterized representing 98.6% of the oil. The oil contained β-phellandrene (15.0%), γ-terpinene (6.0%), myristicin (39.6%) and dillapiole (16.9%) as major constituents.

En este trabajo, se presenta un estudio sobre la distribución regional, ecología y fitosociología de Pennisetum setaceum (Forssk) Chiov., gramínea de origen africano introducida en Canarias, probablemente como ornamental, a mediados de este siglo. En los últimos años, su expansión por el territorio insular más alterado, ha sido significativa, convi...

Se lleva a cabo una caracterización bioclimática, florística y fitosociológica de Pinetum canariensis, el pinar autóctono de la isla de Gran Canaria, y se describe la nueva subasociación juniperetosum canariensis. Se hacen diversas consideraciones sobre las comunidades arbustivas de sustitución y se describe la nueva asociación Euphorbio regis-juba...

A bioclimatic, floristic and phytosociological characterization of Pinetum canariensis, the autochthonous pine woodland of Gran Canaria, is carried out, and the new subassociation juniperetosum canariensis is described. Several remarks about the seral scrub communities are made and the new association Euphorbio regis-jubae-Cistetum monspeliensis is...

Salas, M., Del Arco, M.J. & Pérez de Paz, P.L. Contribución al estudio fitosociológico del pinar grancanario (Islas Canarias). Lazaroa 19:99-117 (1998). Se lleva a cabo una caracterización bioclimática, florística y fitosociológica de Pinetum canariensis, el pinar autóctono de la isla de Gran Canaria, y se describe la nueva subasociación junipereto...

The chemical composition of the volatiles from five Micromeria species (section Micromeria) gathered in the Canary Islands is reported. These species were found to contain bornane and pinane types of bicyclic monoterpenes as the most important components of their essential oils. The analysis showed that the Micromeria species studied could be group...

The pollen of twenty-six of the thirty taxa (specific and infraspecific) of the genus Sideritis L. subgenus Marrubiastrum (Moench) Mend.-Heuer (Lamiaceae) endemic to the Macaronesic region, was studied by optical and scanning electron microscopy. This study was performed to evaluate the possible taxonomic utility of the seemingly absent palynologic...

Seven new sesquiterpene esters plus other known substances were isolated from the aerial part of Ferula linkii-TF and characterized. Four sesquiterpene coumarin ethers (colladin, colladinin, nevskin and umbelliprenin) were also obtained for the first time from this plant. Comparison with compounds obtained from plants of F. linkii from Gran Canaria...

Includes description of the climatophilous vegetation series, edaphophilous vegetation series, and vegetation macroseries, and a catalogue of the plant communities of Tenerife. -from Authors

Describes the chronology of 30 endemisms from Tenerife (Canary Islands). These maps constitute the first outcome of a project whose goal is to make an original automated cartography of the rich Canary Islands flora. -from English summary

The essential oils of two BYSTROPOGON species of the mint family endemic to the Canary Islands (Spain) have been analyzed by a combination of GLC/MS, retention indices, 1R, (13)C-NMR and (1)H-NMR spectra. The major components of the volatile oils were found to be pulegone, isomenthone, and methone in B. ORIGANIFOLIUS and 3-octyl acetate, limonene,...

Two new phenylpropanoids, p-methoxytodadiol and suavediol were isolated from the aerial part and roots of Todaroa aurea subsp. suaveolens, together with the acetylenic compound, falcarinol.

Four Argyranthemum species endemic to the Canary Islands were studied, yielding eight acetylene derivatives: frutescin, demethylfrutescin, frutescinol acetate, capillol acetate, capillol, capillon, demethoxyfrutescinol acetate, foeniculacin (not previously described), the thiophene derivative 6-(2-thienyl)-2,4-hexadienoic acid and three sesquiterpe...

Chemical analysis of Ferula latipinna yielded five new sesquiterpenes, carotanes 1 and 6 and the humulenes 12, 13, and 16 as well as three new phenylpropanes 20, 22, and 24, a phenolic derivative 25, scopoletin, isoscopoletin, diosmetin, veratric, and p-methoxybenzoic acids, and a new trimethoxyphenanthrene 27. The structures of the new compounds w...

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