Lorenzo Peruzzi

Università di Pisa | UNIPI · Department of Biology

Quantitative parameters have been used to characterize chromosome number (CN) variation. This gave us the idea to collect available data in various organisms and compare them, in order to verify if variation patterns differ between animal and plant groups and to quantify these patterns with an Index of CN Heterogeneity (ICNH), useful as a parameter...

Until now, basic karyological parameters were used in different ways by researchers to infer karyological relationships among organisms. In the present study, we propose a standardized approach to this aim, integrating six different, not redundant, parameters in a multivariate PCoA analysis. These parameters are chromosome number, basic chromosome...

The census of the loci classici of 1,400 Italian endemic vascular plants (i.e. not thriving elsewhere with the exception of Corsica and Malta) is here presented and described. The effective place of publication of accepted names, basionyms and homotypic synonyms were identified and critically verified. This often resulted in some change in authorsh...

The software KaryoType, an improved and completely renewed version of the previously existing NucType, was developed for plant chromosomes. The primary function of the software is to allow efficient chromosome measurements and karyotype analysis from microphotographs. Karyotype characterization usually includes chromosome number, size, arm ratio, c...

Chromosome number and genome variation in flowering plants has stimulated a blossoming number of speculations about the ancestral chromosome number of angiosperms, but estimates so far remain equivocal. We used a probabilistic approach to model haploid chromosome number (n) changes along a phylogeny embracing more than 10 thousands taxa, to recons...

An alphabetical list of all the validly published names of the genus Trichospermum, including those first published in Althoffia, Belotia, Bixagrewia, Diclidocarpus, Graeffea, Halconia, and Eroteum, is presented. We provide details of all nomenclatural types, including thirty new typifications (twenty-one lectotypifications, one second-step lectoty...

Three subspecies of Armeria arenaria are reported from Italy, two of which are considered endemic to the Apennines. The taxonomic value of these two taxa (A. arenaria subsp. marginata and A. arenaria subsp. apennina) is unclear. Moreover, the relationships between A. arenaria subsp. praecox and Northern Italian populations—currently ascribed to A....

Floristic inventories are crucial for research in botany, but they are still conducted following a purposive approach. To overcome this limitation and move towards a next generation floristics, we propose a workflow, which integrates novel methods and tools in (a) Species-Area Relationship, (b) floristic cartography, and (c) sampling algorithms.

Hybridization and introgression have a significant impact on the taxonomically controversial genus Pulmonaria. Within this genus, the P. hirta complex shows puzzling systematic relationships among P. hirta s.str. (2n = [22, 26]28), P. apennina (2n = 22[26]), and P. vallarsae (2n = 22), showing range overlaps and mixed phenotypes in Southern Europe....

We present a review of nomenclatural types for the names given to 19 Luehea species and one variety (L. candicans, L. conwentzii, L. densiflora, L. divaricata, L. eichleri, L. ferruginea, L. grandiflora, L. hoehnei, L. laxiflora, L. macrophylla, L. microphylla, L. ochrophylla, L. paniculata, L. parvifolia, L. platypetala, L. rufescens, L. speciosa,...

Silene neglecta has been misunderstood and confused with S. nocturna, although several morphological characters (petal shape, calyx indumentum, hairiness of stamen filaments, seed size, seed-coat surface and shape) allow separation of the species. Moreover, S. mutabilis (which has been considered conspecific with S. neglecta) and S. martinolii (an...

The vast amount of occurrence records currently available offers increasing opportunities for biodiversity data analyses. This amount of data poses new challenges for the reliability and correct interpretation of the results. Indeed, to safely deal with occurrence records, their uncertainty and associated biases should be taken into account. We dev...

Herbaria may represent remarkable sources of viable diaspores for recovering lost genetic variation and extinct plant species, but the application of rewilding extinct species using these collections has not been explored in detail. De-extinction in plants may be achieved by germinating viable diaspores or culturing tissues preserved in herbarium s...

Santolina is a plant genus of dwarf aromatic shrubs that includes about 26 species native to the western Mediterranean Basin. In Corsica and Sardinia, two of the main islands of the Mediterranean, Santolina corsica (tetraploid) and S. insularis (hexaploid) are reported. Along with the cultivated pentaploid S. chamaecyparissus, these species form a...

Data la scarsa variabilità ambientale e l’elevato grado di antropizzazione, il territorio empolese è stato in passato oggetto di scarsa attenzione da parte dei botanici, spesso più attratti da aree di maggiore interesse naturalistico come le montagne o le coste. Da botanico per professione e per passione ho ritenuto quasi un imperativo morale porre...

Here, from macrophylogeographic mtDNA empirical data, we proposed a scenario of the evolution and speciation of two important forest trees, European Black Pine and Scotch Pine, and their multiple subspecies and varieties. Molecular clock simulations revealed that INDELs variability in the Pinus mitochondrial genome is relatively old, i.e., from the...

Here, from macrophylogeographic mtDNA empirical data, we proposed a scenario of the evolution and speciation of two important forest trees, European Black Pine and Scotch Pine, and their multiple subspecies and varieties. Molecular clock simulations revealed that INDELs variability in the Pinus mitochondrial genome is relatively old, i.e., from the...

A traditional karyomorphological approach was carried out in order to investigate the cytotaxonomic relationships among the species of the Santolina chamaecyparissus complex. All the 14 species included in this species complex were analysed for a total of 39 populations. Metaphase plates were obtained by squashing root tips stained with Feulgen tec...

Existing global regionalisation schemes for plants consider the compositional affinities among biotas, but these have not explicitly considered phylogenetic information. Here, we present for the first time, a phytogeographical delineation of the global vascular flora based on species-level evolutionary relationships. We analysed 8,738,520 geographi...

Comparative karyomorphological analyses of six out of the eight white-flowered species of Eranthis sect. Shibateranthis have been carried out. All studied specimens of E. byunsanensis, E. lobulata, E. pinnatifida and E. stellata had a somatic chromosome number 2n = 16 with basic chromosome number x = 8. On the contrary, E. tanhoensis and E. sibiric...

In this contribution, new chromosome data obtained on material collected in Italy are presented. It includes the first counts for Hieracium glanduliferum s.str. and H. tenuiflorum, counts for two Armeria species endemic to Italy, and for Onopordum illyricum subsp. illyricum. We also present here the first chromosome count of Allium permixtum for It...

The nomenclature of 14 taxa from Central and Southern Europe within the Dianthus virgineus group is discussed. Dianthus aggericola Jord., D. collivagus Jord., D. consimilis Jord., D. orophilus Jord., D. saxicola Jord., D. juratensis Jord. are here lectotypified by specimens from the Jordan herbarium in LY, while D. godronianus Jord. by a specimen i...

Vengono presentate nuove località e/o conferme relative a 61 taxa specifici e sottospecifici di piante vascolari della flora vascolare toscana, appartenenti a 56 generi e 25 famiglie: Delosperma (Aizoaceae), Ridolfia (Apiaceae), Dracunculus (Araceae), Gamochaeta, Hieracium, Matricaria, Rhagadiolus, Senecio, Tolpis (Asteraceae), Atriplex (Amaranthac...

In this contribution, we synthesize the main findings regarding Armeria arenaria complex in Italy through a taxonomic integrated approach.

IDPlanT is the Italian Database of Plant Translocation, an initiative of the Nature Conservation Working Group of the Italian Botanical Society. IDPlanT currently includes 185 plant translocations. The establishment of a national database on plant translocation is a key step forward in data sharing and techniques improvement in this field of plant...

A lectotype is designated for the name Dianthus virgineus. The relationships between D. virgineus, D. caryophyllus var. caryophyllus, and D. caryophyllus var. inodorus are analyzed. Dianthus virgineus is the oldest available name that applies to a species complex which is often referred to as D. sylvestris or a broad circumscription of the cultivat...

Invited lecture. The lecture will mainly address two main problems which today threaten the social and scientific recognition of systematics as a basic science crucial for all applications involving the use of organisms, including their conservation. These problems concern a) nomenclature and b) taxonomy. Nomenclature: as a consequence of increasin...

The reproductive traits in Gagea are affected by both abiotic and biotic environmental factors. However, further intrinsic drivers, like the ploidy level, could also have a significant influence on the sexual efficiency of these geophytes. Here, we present a comparative study involving the reproductive biology of five species of Gagea occurring in...

Attraverso estensive raccolte sul campo e studio di campioni d’erbario attendibili dal punto di vista della determinazione, risultano ad oggi presenti con certezza in Toscana 35 specie di Alchemilla. Sono invece da confermare A. demissa Buser e A. glomerulans Buser, certamente presenti in tempi storici. Mentre A. polytricha Buser è un taxon di scar...

In this contribution, new chromosome data obtained on material collected in Italy are presented. It includes counts for Centaurea aegusae , Hieracium racemosum subsp. lucanum, H. australe subsp. australe, Lysimachia arvensis subsp. arvensis, Micromeria graeca subsp. graeca, and M. graeca subsp. consentina.

The typification of the species names Santolina ericoides and S. villosa (Asteraceae) are revisited. The name Santolina ericoides has been applied to plants distributed in the Iberian Peninsula and S France, and the name S. villosa has been applied to a taxon endemic to Spain. These species names have recently been neotypified from specimens kept a...

In this contribution, new data concerning the distribution of vascular flora alien to Italy are presented. It includes new records, confirmations, exclusions, and status changes for Italy or for Italian administrative regions. Nomenclatural and distribution updates published elsewhere are provided as Suppl. material 1.

In this contribution, new data concerning the distribution of native vascular flora in Italy are presented. It includes new records, confirmations, exclusions, and status changes to the Italian administrative regions. A new combination in the genus Pilosella is proposed. Nomenclatural and distribution updates, published elsewhere, and corrigenda ar...

Free access at: https://doi.org/10.4081/nhs.2021.520 This paper provides an updated overview, based on nomenclatural, taxonomical and distribution data, on the native and alien vascular flora of Italy, with details on the occurrence at national and regional administrative level. Recently described taxa occurring in Italy, which were not included in...

Existing global regionalisation schemes for plants consider the compositional affinities among biotas, but these have not considered phylogenetic information explicitly. Incorporating phylogenetic information may substantially advance our understanding of the relationships among regions and the synopsis of biogeographical schemes, because phylogeny...

A nomenclatural revision of the Santolina chamaecyparissus species complex is presented. A detailed survey of original material for all names applied to members of the complex was performed, and twenty-eight names are newly typified. The current usage of the names S. villosa and S. ericoides, relating to some Spanish and French populations, is disc...

Effects of climate change are particularly important in the Mediterranean Biodiversity hotspot where rising temperatures and drought are negatively affecting several plant taxa, including endemic species. Assisted Colonisation (AC) represents a useful tool for reducing the effect of climate change on endemic plant species threatened by climate chan...

Italy has a rich natural heritage, which is dangerously under pressure. In recent years, there is an increased awareness of the crucial role of plants in ecosystem functioning and in providing ecosystem services. Consequently, an updated Red List of the Italian vascular flora was compiled in this work, at the request of the Ministry for Environment...

The narrow central Italian endemic and threatened Webb’s hyacinth (Bellevalia webbiana), a perennial herb, is a clear example of a species that has disappeared from several localities due to the development of human settlements. We characterized population genetics of this species to infer possible threats to its viability. We used a dominant DNA f...

New localities and/or confirmations concerning 74 specific and subspecific plant taxa of Tuscan vascular flora, belonging to 69 genera and 28 families are presented: Bunium, Trinia (Apiaceae), Nerium (Apocynaceae), Lemna (Araceae), Artemisia, Bidens, Centaurea, Crupina, Gazania, Hieracium, Rhagadiolus, Symphyotrichum, Tagetes, Tripleurospermum (Ast...

The inventory of the taxa collected during the annual field trip of the working group for Floristics, Systematics and Evolution of the Italian Botanical Society is reported. The field trip was held in 2019 along the Sillaro, Santerno, and Senio high valleys located in Toscana (central Italy). The flora documented for the studied area amounts to 492...

Italy is located in the heart of the Mediterranean Basin, a region considered one of the most threatened global biodiversity hotspots. Its environmental and climatic heterogeneity allowed the differentiation of a large number of plant species (more than 8.200 taxa), that however are subjected to an increased number of threats due to changes in soci...

In this study, Daphne laureola L., a European–Mediterranean species, was investigated for its antioxidant properties using different in vitro bioassays, namely 2,2′-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) (ABTS), 2,2-diphenyl-1-picrylhydrazyl (DPPH), Ferric Reducing Activity Power (FRAP), and β-carotene bleaching assays. The acetylcholine...

In this contribution, new data concerning the distribution of vascular flora alien to Italy are presented. It includes new records, confirmations, exclusions, and status changes for Italy or for Italian administrative regions. Nomenclatural and distribution updates published elsewhere are provided as Suppl. material 1.

The checklist of the Italian native and alien vascular flora, and a guide to Floritaly (Portal to the Flora of Italy). La checklist della flora vascolare autoctona e alloctona d'Italia e una guida a Floritaly (Portale della Flora d'Italia)

Digital data concerning the flora of Italy are largely fragmented among different resources hosted on different platforms, and often with different data standards, which are neither con-nected by a common access point, nor by web services, thus constituting a relevant obstacle to data access and usage. Taxonomic incongruences add a further complica...

This paper deals with the typification and taxonomy of five Mediterranean Cytisus species. Cytisus affinis, C. candidus, and C. spinescens nom. illeg., non Sieber ex Spreng. were described from Sicily by Karel Bořivoj Presl, Cytisus spinescens was described from Apulia (south Italy) by Curt Polycarp Joachim Sprengel, and C. villosus was described f...

In this contribution, new chromosome data obtained on material collected in Italy are presented. It includes counts from six populations of three taxa within the genus Pulmonaria , two of which are endemic to Italy (P. vallarsae subsp. apennina and P. vallarsae subsp. vallarsae); the other is the widespread European P. officinalis . In addition, tw...