Manuel B. Crespo

University of Alicante | UA · Environmental Sciences and Natural Resources

Human activities like dam construction in rivers and urban development in coastal areas, combined with climate change, are degrading coastal systems. As a result, many European countries have implemented laws and strategies to protect their shorelines. This research focuses on Guardamar del Segura in Spain, where human actions in the Segura River b...

The present work was carried out to evaluate the antioxidant activity of Cystosphaera jacquinotii and to quantify its total phenolic content (TPC), compared with other fucal, Ericaria amentacea. Phenolic compounds occur in high quantities in brown algae and they have an essential paper in antioxidative action. Extracts were prepared with methanol d...

The “Reticulata irises” are dwarf irises highly appreciated in horticulture, which are characterised by their tuberiform bulbs, with a single fleshy inner tunic clothed mostly with reticulate or reticulate-hairy outer tunics, and basal leaves bifacial, angulose or finely sulcate in section. The aggregate is often accepted as a taxonomically compact...

A taxonomic backbone of the Plumbaginaceae is presented and the current state of knowledge on phylogenetic relationships and taxon limits is reviewed as a basis for the accepted taxon concepts. In total, 4,476 scientific names and designations are treated of which 30 are not in the family Plumbaginaceae. The Plumbaginaceae are subdivided in three t...

Sideritis royoi is found in the rocky limestone habitats of the Port Massif (southern Catalonia, Spain). The species was first collected by the local botanist Lluís de Torres in the late part of the 20th century, but the specimens have remained unidentified positively in herbaria for over 40 years. Sideritis royoi likely belongs to section Sideriti...

RESUMEN: Helianthemum bilyanense (Cistaceae) es un endemismo local del noroeste de la provincia de Alicante que habita exclusivamente sobre substratos yesíferos, bajo un bioclima mesomediterráneo-inferior seco-inferior. Actualmente se conoce una única población en los alrededores de Villena, con un área de ocupación de 1037 m2 donde se han censado...

Sideritis royoi is described from limestone rocky habitats of the Port Massif (southern Catalonia, Spain). The species was first collected by the local botanist Lluís de Torres in the late part of the 20th century, but the specimens have remained unidentified positively in herbaria for over 40 years. Sideritis royoi likely belongs to section Sideri...

Tamarix is native to Eurasia plus the northern and southern territories of Africa, with some species being introduced into America and Oceania. They are usually found in arid, desertic, or subdesertic areas, often on saline or subsaline soils, in Mediterranean, temperate, or subtropical climates. The genus is renowned for its complex taxonomy, whic...

Tamarix is native to Eurasia, plus the northern and southern territories of Africa, with some species being introduced into America and Oceania. They are usually found in arid, desertic or subdesertic areas, often on saline or subsaline soils, under Mediterranean, Temperate or Subtropical climates. The genus is renowned by its complex taxonomy, whi...

The study of wild and cultivated material of Trimelopter from the Northern Cape province of South Africa revealed an undescribed species that shows a unique syndrome of morphological characters. We here describe Trimelopter cordifolium based on plants approaching T. psammophorum but differing in its small, cordate, psammophorous leaf, shorter inflo...

Taxonomy and systematics and specifically the generic circumscription of the Hyacinthaceae subfamily Urgineoideae have been a matter of controversy in recent decades. Widely contrasting taxonomic treatments have been proposed, ranging from systems comprising only two genera (including a morphologically very variable Drimia covering nearly the whole...

The taxonomic identity and phylogenetic relationships of several southern African perennial taxa related to Frankenia repens are discussed. In particular, F. nodiflora Lam., a misunderstood species described from the Cape region and synonymised to F. pulverulenta, is restored for plants endemic to salt-pans and riverbeds in the coastal lowlands acr...

The name “Spergularia hanoverensis Simon” has been misapplied for an endemic taxon confined to inland semi-desert ecosystems in central-western South Africa. It is commonly accepted to be a small annual species occurring in saline habitats in a wide elevation range, but its real identity still remains obscure. In the context of a taxonomic and phyl...

The name “Spergularia hanoverensis Simon” has been misapplied to an endemic taxon confined to inland semidesert ecosystems in central-western South Africa. It is commonly accepted as a small annual species occurring in saline habitats in a wide elevation range, but its identity still remains obscure. In the context of taxonomic and phylogenetic res...

Iris subgenus Xiphium is a small group of taxa that occur in the Mediterranean Basin, a long-recognized biodiversity hotspot. Phylogenetic relationships among these Iris were reconstructed based on sequence data from 110 nuclear markers (coding regions) and plas- tomes using Bayesian inference and maximum likelihood methods. Best trees based on pla...

The taxonomic identity and phylogenetic relationships of several southern African perennial taxa related to Frankenia repens are discussed. In particular, F. nodiflora Lam., a misunderstood species described from the Cape region and synonymised to F. pulverulenta, is restored for plants endemic to salt-pans and riverbeds in the coastal lowlands acr...

Our field work in the Eastern Cape Province of South Africa revealed an undescribed species of Austronea, which approaches A. marginata and related species, but differs in distinct morphological characters and distribution. We here describe Austronea oblongifolia to include plants showing bulbs with compact scales; a single, oblong, apiculate leaf...

A new nothospecies, Teucrium × murcigerum, is described which comes from the hybridisation between two species of section Polium: Teucrium murcicum (subsect. Polium) and Teucrium lanigerum (subsect. Simplicipilosa), both endemic to SE Iberian Peninsula. This appears to be the first report of natural intersubsectional hybridisation between T. subsec...

The taxonomy and systematics of Urgineoideae (Hyacinthaceae) have been controversial in recent decades with contrasting taxonomic treatments proposed based on preliminary and partial studies that have focused on morphology and/or solely plastid DNA sequence data. Some authors have recognised only two genera, with a very broadly conceived Drimia, wh...

A taxonomic revision of the genus Tamarix for the Iberian Peninsula and Balearic Islands is provided, updating the Flora iberica account published in 1993. A new dichotomous key for the Iberian and Balearic species is also included. The presence of certain number of species previously cited for the study area (T. arborea, T. canariensis, T. dalmati...

Se describe un nuevo taxón endémico de la flora iberolevantina, Scabiosa columbaria subsp. saetabensis subsp. nov. (Caprifoliaceae, Dipsacoideae), cuya distribución se circunscribe mayormente a las áreas litorales del Sector Setabense (sur de Valencia y norte de Alicante). Se aporta una descripción morfológica completa, así como datos sobre su ecol...

Squilla Steinh. was considered to be an orthographic variant of Scilla L., and therefore the new genus Charybdis Speta was created to include Scilla maritima L. and related taxa occurring in the Mediterranean. Molecular phylogenetic studies recovered Charybdis as distant from Urginea; this finding was also supported by morphology and phytochemistry...

The controversy regarding the status of the Macroptilium gracile species complex has been elucidated by the authors of this paper; nevertheless, some nomenclatural issues regarding the naming of the newly established variety have been found. In the present contribution, we discuss some nomenclatural aspects concerning the valid publication of the n...

Desde la editorial www.Jolube.es tomamos el relevo y continuamos con la edición de la magnífica Flora Valentina. El volumen cuarto incluye familias de dicotiledóneas, desde las labiadas hasta la rhamnáceas. Mantenemos la apuesta por una obra ilustrada, con al menos una imagen por especie. Cada familia tienen una clave de géneros y dentro de cada un...

Some nomenclatural and bibliographical data about the name Chaenorhinum rupestre and the association Campanulo fastigiatae-Chaenorhinetum rupestris are presented

Some nomenclatural data about two communities of Rosmarinetea in Valencia, Murcia and Alicante (E of Spain) are presented, and the names of two associations, Teucrio belionis-Halimietum halimifolii and Centaureo dufourii-Rosmarinetum officinalis, are corrected

Within the framework of a taxonomic revision of Hyacinthaceae subfamily Ornithogaloideae, we present two new combinations in Eliokarmos for South African species, and five new combinations in Loncomelos for taxa occurring in Iran and Iraq. Details on the concerned types are given, and a new lectotype is designated.

A taxonomic revision of the genus Melinis P. Beauv. in the Iberian Peninsula and the Balearic Islands is shown.

A taxonomic revision of the genus Digitaria Haller in the Iberian Peninsula and the Balearic Islands is shown.

A taxonomic revision of Setaria L. (Panicoideae) in the Iberian Penincula and the Balearic Islands is shown

A revision of the genus Echinochloa in the Iberian Peninsula and the Balearic Islands is shown.

A taxonomic revision od the genus Cenchrus in the Iberian Peninsula and the Balearic Islands is shown

A taxonomic revision of the genus Oplismenus P. Beauv. in the Iberian Peninsula and the Balearic Islands is shown

A taxonomic revision of the genus Panicum L. in the Iberian Peninsula and the Balearic Islands is shown.

A taxonomic revision of the genus Stenotaphrum Trin. in the Iberian Peninsula and the Balearic Islands is shown

Esta obra se ordena esencialmente a facilitar la identificación de las plantas vasculares autóctonas o naturalizadas en la península ibérica e islas Baleares. Este volumen XIX (II) está dedicado a las Gramineae (segunda parte). Incluye las subfamilias Poideae (continuación), Aristidoideae, Panicoideae, Arundinoideae, Danthonioideae y Chloridoideae.

The taxonomic identity and phylogenetic relationships of several South African perennial taxa often synonymised to the European Spergularia media are discussed. In particular, the case of Arenaria glandulosa Jacq., a species described as native to the Cape region of South Africa, was revisited. We found this taxon to be a Spergularia, endemic to sa...

The Desfontaines’s name Cistus heterophyllus is discussed and lectotypified on a specimen preserved at P (Museum national d’Histoire naturelle, Paris). In addition, the lectotype of its hybrid C. ×clausonii (C. heterophyllus × C. albidus) is designated from the original material preserved at MPU (Institut de Botanique, Université de Montpellier II)...

The typification of three names in the genus Limonium published by Sandro Pignatti from the eastern Iberian Peninsula (L. confusum subsp. densissimum, L. lucentinum, and L. parvibracteatum) is discussed. The personal herbarium of Prof. Sandro Pignatti was originally deposited at TSB (Herbarium of the University of Trieste-Herbarium Universitatis Te...

Within the framework of a taxonomic revision of subfamily Urgineoideae based on morphological, genetic and phytogeographic data covering numerous samples from its whole range of distribution, we here describe a new genus and species from Pella se Berge in northwestern South Africa. Triandra gen. nov. is easily characterized by the absence of stamen...

The typification of 20 names in the genus Tamarix is revised. All the names were described from material collected in the Iberian Peninsula and most of them were described by Carlos Pau, Frère Sennen and their collaborators (one name—Tamarix hispanica—was described by Pierre Edmond Boissier). The revision includes the correction of the type status...

A new species, Spergularia quartzicola, is described from the quartz outcrops of Knersvlakte (Namaqualand, South Africa). It was sometimes confused with S. media because of perennial habit and white flowers, but the new species differs by the subshrubby, strongly woody at base, habit (vs. herbaceous, suffruticose at the base); the leaves with a lon...

Taxonomic revisions using newly available molecular data can have profound consequences for identifying areas of high endemism and, therefore, high conservation priority. A good example of the connection between taxonomy, biodiversity ecology, and conservation issues is genus Phaeiris (Iris subsect. Hexagonae), an endemic taxon of the southeastern...

Se presentan nuevos datos sobre las comunidades rupícolas de la alianza Pinguiculion longifoliae en la Península Ibérica. Estos tipos de vegetación crecen en roquedos calcáreos y dolomíticos, particularmente en paredones y abrigos umbrosos, sobre suelos apenas desarrollados donde se forman tobas que permanecen húmedas y rezumantes durante gran part...

Within the framework of a taxonomic revision of Hyacinthaceae subfamily Urgineoideae (Asparagaceae tribe Urgineeae) combining morphological and genetic data from numerous samples across its whole range of distribution, we here present a taxonomic revision of Tenicroa. Species of Tenicroa have a very intricate history and therefore, unlike many othe...

A new species of the southern Africa endemic genus Eliokarmos, that includes the well-known chincherinchees, is described from the vicinity of Kotzesrus, Northern Cape Province of South Africa. Eliokarmos humanii sp. nov. is unique in the genus based on its single, slightly fleshy, suborbicular, convex leaf with ciliate margin, and the short subspi...

The new name Iris zhaoana is proposed to replace I. potaninii var. ionantha, which is applied to a dwarf bearded iris described from western China, usually included in I. sect. Psammiris. It is a plant occurring at high elevation and showing roots thick and grey; leaves glaucous-green, blunt to subacute and shortly mucronate at apex; flower solitar...

Linnaeus (1753) described his Panicum crus-galli based on material from Europe and North America (Virginia), which indeed corresponded to two currently accepted distinct species. Lectotypification by Hitchcock (1908) selected as lectotype the sheet LINN No. 80.18, collected in Canada by Pehr Kalm, which indeed belongs to the currently accepted E. m...

The genus Daucus is widely distributed worldwide, but with a concentration of diversity in the Mediterranean Region. The D. carota complex presents the greatest taxonomic problems in the genus. We focus on a distinctive phenotypic group of coastal morphotypes of D. carota, strictly confined to the margins to within about 0.5 km of the Mediterranean...

Two new rupicolous species of Pinguicula are described from the limestone and dolomitic mountain ranges of central and southern Iberian Peninsula, which were previously identified as P. submediterranea, P. mundi or P. dertosensis. First, the name P. tejedensis sp. nov. is applied to populations concealed to the high elevation areas of Sierra de Tej...

Hammada articulata (Moquin-Tandon 1849: 175) O. Bolòs & Vigo (1974: 89) (Amaranthaceae Juss.) is a small shrubs up to 80 cm tall, glaucous, with articulate stems (segments of main branches ca. 1 cm long); leaves opposite, connate and amplexicaule forming segments, lamina up to 3 mm, triangular-subulate; inflorescence spicate, interrupted; flowers u...

Nomenclatural types of eleven names of Paniceae described from the Old World are indicated and discussed. This includes designation of ten new types (i.e. four lectotypes, one second-step lectotype, three epitypes and two neotypes) for names currently accepted at different ranks in Cenchrus, Digitaria, Echinochloa, Oplismenus and Setaria. Furthermo...

Nomenclatural types of eleven names of Paniceae described from the Old World are indicated and discussed. This includes designation of ten new types (i.e. four lectotypes, one second-step lectotype, three epitypes and two neotypes) for names currently accepted at different ranks in Cenchrus, Digitaria, Echinochloa, Oplismenus and Setaria. Furthermo...

Se cita por primera vez la presencia de Calicotome villosa en los territorios iberolevantinos. Es ésta una especie ampliamente repartida por la Cuenca Mediterránea, que en la Península Ibérica presenta una distribución Bética y Luso-Extremadurense, con preferencia por suelos ácidos, en el piso de vegetación termomediterráneo subhúmedo-húmedo. En es...

Biscutella L. ser. Biscutella (= Biscutella ser. Lyratae Malin.) comprises mostly annual or short-lived perennial plants occurring in the Mediterranean basin and the Middle East, which exhibit some diagnostic floral features. Taxa in the series have considerable morphological plasticity, which is not well correlated with clear geographic or ecologi...

Macroptilium gracile (Phaseolinae, Fabaceae) sensu lato is an extremely diverse species distributed from Mexico to Argentina. The taxonomic and nomenclatural history of the species is confusing, due to existing contrasting treatments. All 15 names corresponding to 12 taxa that have often been considered akin to M. gracile were selected here to clar...

Among the recently described genera in Hyacinthaceae subfamily Urgineoideae (= Asparagaceae subfam. Scilloideae tribe Urgineeae), Austronea Mart.-Azorín, M.B.Crespo, M.Pinter & Wetschnig in Martínez-Azorín et al. (2018: 105) includes 20 species restricted to southern Africa (Martínez-Azorín et al. 2018, 2019a, 2019b). Some such species were traditi...

The identity of Drimia purpurascens, a name usually synonymised to the African D. elata, is clarified. Morphological data in the protologue allow identification of the former with the Mediterranean D. undata (Urginea undulata), which is usually treated as belonging to Charybdis, a genus morphologically and molecularly separated from both Drimia s.s...

Hyacinthaceae subfam. Ornithogaloideae (= tribe Ornithogaleae of Aparagaceae sensu APG 2009, 2016, Chase et al. 2009) includes about 300 species of bulbous plants mainly distributed throughout Europe, Africa and south-west Asia. The latest comprehensive study in Ornithogaloideae (Martínez-Azorín et al. 2011) demonstrates the existence of 19 monophy...

In the framework of a revision of the Iberian Paniceae Brown (1814: 582) for the Flora iberica project, we came across the aggregate of the “Natal grass”, Melinis repens (Willdenow 1797: 322) Zizka (1988: 55), a group of annual to short-lived perennial grasses being native and widely distributed in Tropical Africa, Arabian Peninsula, India, Cape Ve...

Daucus mauritanicus L. was described by Linnaeus on the basis of heterogeneous material belonging to two different species. The current lectotype of the name, Herb. Linnaeus No. 340.2 (LINN), is said to be a synonym of D. carota L. However, a close examination of the plant in that voucher reveals that it corresponds undoubtedly to D. muricatus (L.)...

In the frame of a taxonomic revision of Hyacinthaceae subfamily Urgineoideae (Asparagaceae tribe Urgineeae) combining morphological and genetic data from numerous samples across its whole range of distribution, we here present a taxonomic revision of Geschollia, a genus originally accepted as monotypic to include G. anomala. This genus was characte...

Within the framework of the taxonomic revision of subfamily Urgineoideae of Hyacinthaceae, we here describe the new genus Striatula from South Africa and southern Namibia. Striatula is at first sight related to Rhadamanthus species, but can be easily distinguished by the one or two flat, ovate to elliptic, sulcate leaves which are appressed to the...

A new Saetabensian subrupicolous black-sedge community: Erico terminalis-Schoenetum nigricantis (Molinio-Holoschoenion). A new endemic plant association, Erico terminalis-Schoenetum nigricantis (All. Molinio-Holoschoenion vulgaris), is described from the thermomediterranean areas of the low- or medium-elevation mountains of the southern parts of Va...

Adianto-Pinguiculetum saetabensis (Pinguiculion longifoliae): a new rupicolous Saetabensian plant association. A new plant association, Adianto capilli-veneris-Pinguiculetum saetabensis (All. Pinguiculion longifoliae), is described from the thermomediterranean areas of Sierra de Enguera (C-S province of Valencia, E of Spain), which is dominated by...

Biscutella ser. Biscutella (≡ ser. Lyratae Malin.) is a group of mostly annual or short-lived perennial plants, with petals gradually tapering at the base and lateral intrastaminal nectaries, endemic to the Mediterranean basin and the Middle East. Recent taxonomic work has revealed that a relative morphological homogeneity occurs in Europe and Asia...

Daucus has traditionally been estimated to comprise 21-25 species, but a recent study expanded the genus to c. 40 species. The present study uses ten nuclear orthologues to examine 125 accessions, including 40 collections of 11 species (D. annuus, D. arcanus, D. decipiens, D. durieua, D. edulis, D. gracilis, D. minusculus, D. montanus, D. pumilus,...

Tamarix is one of the taxonomically most complex genera among the angiosperms, and there is little consensus regarding its infrageneric classification. Here we present the most complete phylogenetic reconstruction of the genus to date. This includes a DNA phylogenetic tree based on nuclear ribosomal ITS, and a plastid DNA phylogeny based on three i...

Fourteen names of North African taxa belonging to Biscutella ser. Biscutella (= ser. Lyratae Malin.), and described by Candolle, Willdenow and Maire, are typified here as a first step towards a taxonomic revision of that series. Lectotypes are designated from syntypes and original material conserved in the herbaria B and MPU: additionally, two epit...

Scilla undulata Desfontaines (1792: 161) was described for plants occurring in Barbary, namely on the northern coastal areas of Tunisia and Algeria. The name has been applied to hysteranthous plants with undulate, glabrous leaves; inflorescence long racemose, usually loose; flowers pedicellate, stellate, with small, shortly spurred, deciduous bract...

Biscutella pseudolyrata is described from the Atlantic coastal areas of NW Morocco, where several populations are known to occur in deep sandy soils at low elevation. It belongs to B. ser. Biscutella (B. ser. Lyratae, Brassicaceae) and is morphologically close to the Spanish endemic B. lyrata and the C Mediterranean B. maritima, two species to whic...

The name Iberis carica (Brassicaceae) applies to an endemic annual species growing in southwestern Turkey. A lectotype is selected among syntypes cited in the protologue. Furthermore, the correct authorship citation of that name at both subspecific and specific ranks is discussed.

Our fieldwork in the Eastern Cape province of South Africa revealed an undescribed species of Austronea which was named by Schonland as “Urginea Patersoniae Schonl. Ms.”, but never validly published. We here describe Austronea patersoniae to include plants showing bulbs with loose scales; 5–9 narrowly linear erect leaves with papillate margins; elo...

As part of a taxonomic revision of tribe Urgineeae, and informed by morphological and phylogenetic evidence obtained in the last decade, we present 17 new combinations in Austronea, Indurgia, Schizobasis, Tenicroa, Thuranthos, Urgineopsis, and Vera-duthiea. These are for taxa recently described in Drimia sensu latissimo or otherwise named during th...

RESUMEN: Se analiza y discute la diversidad y nomenclatura dentro del complejo de Phoenix dactylifera valorando la importancia de Phoenix excelsior Cav. para la caracterización del grupo occidental de palmeras datileras cuyo núcleo más definido lo constituye la palmera datilera española. Ante la ausencia de holotipo y de material original de Ph. ex...

Esta obra se ordena esencialmente a facilitar la identificación de las plantas vasculares autóctonas o naturalizadas en la península ibérica e islas Baleares. Este volumen XVI (III) está dedicado a las Compositae.

In a recent publication on nomenclature and taxonomy of the genus Juno, we have established several new combinations for irises, including Iris koyuncui Fırat. When stating the intended new combination in Juno for the latter name, a partially wrong citation of its basionym was made. Although the publication year, page number and holotype data were...

Revisión del género Guizotia en la Península Ibérica

Revisión del género Eclipta L. en la Península Ibérica

Revisión del género Pascalia Ortega en la Península Ibérica

Revisión del género Schkuhria en la Península Ibérica

Revisión del género Centipeda Lour. en la Península Ibérica

Revisión del género Euphrosyne en la Península Ibérica

Revisión del género Verbesina L. en la Península Ibérica

Revisión del género Borrichia Adans. en la Península Ibérica

Revisión del género Flaveria Juss. en la Península Ibérica