Search results for "Botanica"

Acquisizioni filogenetiche e variazioni tassonomiche in alcune rosacee legnose della flora Italiana

2018

In Italia, secondo la recentissima sintesi di Bartolucci et al., la flora vascolare nativa sarebbe rappresentata da 1092 generi di piante vascolari. Fra di essi ricorre Sorbus L. (Rosaceae) a cui vengono attribuiti 11 taxa specifici e sottospecifici (ivi compresi alcuni taxa ibridogeni) e un dodicesimo taxon da confermare nel territorio italiano. In questo contributo si vuole porre attenzione proprio alla recentissima checklist europea di Sorbus s.l. basata su acquisizioni di carattere filogenetico sul gruppo e, più in generale, sulle Pyrinae. In particolare, si fa riferimento allo studio di Sennikov, Kurtto in cui Sorbus L. viene praticamente smembrato in numerosi altri generi, mentre i ta…

Pyrus ciancioi (Rosaceae), a new species from Sicily

2012

A new species of Pyrus L. from the Nebrodi Mountains (NE Sicily) is described, named, and illustrated. It differs from P. spinosa in the shape and diameter/length ratio of its fruits and in the width/length ratio of the leaf lamina. An analytical key to the Pyrus species growing in Sicily is provided.

Competition between algae and seagrasses: a Ruppia cirrhosa (Petagna) Grande bed in western Mediterranean Sea

2007

Flower and fruit structure of the endangered species Petagnaea gussonei (Sprengel) Rauschert (Saniculoideae, Apiaceae) and implications for its repro…

2015

Petagnaea gussonei (Apiaceae) is an endangered species endemic to the Nebrodi mountains (north-eastern Sicily). Although an increasing number of studies have been performed on this species, its reproductive biology remains poorly understood. The aim of this study was to investigate in detail the structure of the flower and the fruit of Petagnaea, and the possible implications for its breeding system and seed dispersal mechanism. Results from fieldwork, light microscopy and scanning electron microscopy suggest (1) the presence of protandrous hermaphrodite flowers; (2) geitonogamy, autogamy, and allogamy as breeding system mechanisms of P. gussonei, even if asexual reproduction is preferred b…

Taxonomic implications of seed morphology and seed coat sculputures in Brassica sect. Brassica

2012

The ectomycorrhizal community of Abies nebrodensis: preliminary results

2016

Abies nebrodensis (Lojac.) Mattei is a Critically Endangered forest tree included in Appendix I of the Bern Convention and as a priority species in Annexes II and IV of the Habitats Directive [1]. In situ and ex situ conservation strategies [2] and, more recently, a LIFE Natura project [3] allowed a marked improvement of health conditions of trees and of seedlings renewal. A first attempt to characterize the ectomycorrhizas of A. nebrodensis was carried out by Venturella & Rambelli [4]. In the frame of the activities of the II National Workshop of Ectomycorrhyza (Palermo, 2015), this paper reports the preliminary investigation carried out on the ectomycorrhyzal community of A. nebrodensis i…

The nutritional value of Leccinum corsicum, aniche product from Sicily (southern Italy)

2010

The nutritional value of Leccinum corsicum, a wild edible mushroom used as a food in many Italian regions and restricted communities of Sicily, is here evaluated. The results show that L. corsicum is a valuable niche product and an important source of nutritional elements for the human diet.

Seed germination data of three Hieracium and one Pilosella (Asteraceae) from Sicily and southern Italy

2020

This work reports the first seed germination data of three Hieracium and one Pilosella (Asteraceae) taxa from Sicily and southern Italy. The studied taxa are: Hieracium hypochoeroides subsp. cilentanum, endemic to Campania, H. schmidtii subsp. nebrodense, endemic to Sicily, H. terraccianoi, endemic to Calabria and Pilosella hoppeana subsp. sicula, endemic to Sicily. The obtained results showed that the investigated taxa produce non-dormant seeds, with a high percentage of germination at all tested thermoperiods (15°C to 25°C and the alternating temperature of 25/15°C). Germination tests carried out in gibberellic acid (GA3) provided similar germination percentages. The data presented in thi…

From common and used to rare and forgotten: Past and present distribution of the archaeophyte Euphorbia lathyris L. (Euphorbiaceae) in southern Italy…

2019

Our study aimed at clarifying the current and previous occurrence, distribution and status (native vs. introduced) of Euphorbia lathyris L., the caper spurge, in S Italy and Sicily: most of the recent Italian floras and checklists, in fact, do not report this species for this area. To do this, a multi-disciplinary research was carried out taking into account not only botanical but also ethnobotanical and dialectological sources and a survey of the main herbaria of central and southern Italy. Our results point out that E. lathyris was much more frequent, well-known and commonly used in the whole southern Italy and in Sicily until 2-3 centuries ago, and that it probably experienced isolated c…

Acclimatization, distribution and potential economic use of Argania spinosa (Sapotaceae) in southern Italy

2021

The authors report updated notes on the acclimatization, distribution, areas suitable for cultivation and, potential use of Argania spinosa (Sapotaceae) in southern Italy. Based on observations carried out on the plants cultivated in Bari and the Botanical Garden of Palermo, and on ecological requirements of the species it is possible to consider A. spinosa as a woody species easily adaptable to the coastal climate of southern Italy.