Search results for "Karyology"
showing 7 items of 37 documents
Allium garganicum (Alliaceae), a new species from Apulia (SE Italy)
2009
Abstract A new endemic species of Allium, belonging to the A. stamineum Boiss. group, is described from the Mount Gargano (Apulia, SE Italy). This new taxon, named Allium garganicum, is the single representative of this group in the Italian flora, limited to a small population growing on the limestone rocks near the coast. Its relationships with allied taxa, A. stamineum Boiss. and A. guicciardii Heldr., are also discussed.
Allium aetnense (Amaryllidaceae), a new species from Sicily.
2013
A new species from Mt Etna (Sicily), Allium aetenense of A. sect. Codonoprasum, is described and illustrated. It is a diploid species (2n = 16) that grows on basaltic rocks in the mountain belt and shows close relationships with A. tenuiflorum of the Italian peninsula. Its morphology, karyology, leaf anatomy, seed coat microsculpturing, ecology and taxonomic position are examined.
A new autumn-flowering species of Allium (Alliaceae) from Croatia
2009
Here we describe Allium telmatum Bogdanovic, Brullo, Giusso & Salmeri, a new species of Allium sect. Codonoprasum from North Dalmatia (Croatia). Its chromosome number (2n = 32), karyotype, leaf anatomy, ecology and taxonomical relationships are examined. Several features, such as phenology (flowering in autumn), occurrence in coastal salt marshes, tetraploid chromosome number, and morphology, indicate that it is most closely related to the Tyrrhenian species Allium savii. On the basis of our herbarium survey, we present here a distribution map of the autumn-flowering species of Allium sect. Codonoprasum in the Mediterranean area.
Vicia brulloi (Fabaceae), a new species from Sicily
2019
Vicia brulloi, a new species from Peloritani range in NE Sicily, is described and illustrated. It is a perennial climbing liane linked to riparian woods, showing close relationship mainly with V. pisiformis, having a scattered European distribution. In particular, V. brulloi is a very rare and extremely localized species morphologically well distinct from V. pisiformis in several remarkable features, such as the dense indumentum covering the vegetative structures and calyces, the shape and size of flower pieces, pods, seeds, as well as seed testa micromorphology. Another relevant peculiarity of V. brulloi is the lower tooth of the calyx replaced by a green leafy appendix, character infreque…
Estudio de los taxa afines a Limonium vulgare Miller de marismas de Portugal Continental
2012
Master de Biodiversidad: Conservacion y evolucion - Universitat de Valencia. Facultat de Ciencies Biologiques / Instituto Superior de Agronomia The genus Limonium Miller is a highly complex taxonomic group and a large number of micro-species has been described as a result of their reproductive strategies, sexual and/or apomixis. In Portugal, there are few and old studies on Limonium species, although the country has exceptional conditions for their presence, given that they inhabit rocky cliffs, beaches and salt-marshes. This study was intended to clarify the identity of ambiguous specimens related to taxon Limonium vulgare Miller, typical in the salt-marshes of Continental Portugal. We per…
Cytotaxonomical remarks on Loncomelos visianicum (Hyacinthaceae), a poorly known species endemic to Croatia
2020
Loncomelos visianicum, a rare and poorly known geophyte of the Croatian flora, was described from the remote and uninhabited Adriatic island of Palagruza as Ornithogalum visianicum, and it has not been collected again for over a century. Basing on living materials, recently rediscovered in the locus classicus, it was possible to carry out a careful investigation regarding the morphology, karyology, leaf anatomy, and ecology of this very peculiar species. It is triploid, showing 2n = 42 + 0-5B chromosomes, taxonomically quite isolated, showing some morphological relationships with L. narbonense and L. creticum. Currently, L. visianicum is represented by a low number of individuals growing in…
Allium sphaeronixum (Amaryllidaceae), A New Species from Turkey
2023
In this paper, Allium sphaeronixum, a new species of the sect. Codonoprasum from Turkey, is described and illustrated. The new species is endemic to Central Anatolia, limited to the area of Nevşehir, where it grows on sandy or rocky soil at an elevation of 1000–1300 m a.s.l. Its morphology, phenology, karyology, leaf anatomy, seed testa micromorphology, chorology, and conservation status are examined in detail. The taxonomic relationships with the closest allied species, A. staticiforme and A. myrianthum, are also highlighted and discussed.