Search results for "Woodiness"

showing 2 items of 2 documents

Major trends in stem anatomy and growth forms in the perianth-bearing Piperales, with special focus on Aristolochia.

2014

International audience; BACKGROUND AND AIMS: The order Piperales has the highest diversity of growth forms among the earliest angiosperm lineages, including trees, shrubs, climbers and herbs. However, within the perianth-bearing Piperales (Asarum, Saruma, Lactoris, Hydnora, Prosopanche, Thottea and Aristolochia), climbing species only occur in the most species-rich genus Aristolochia. This study traces anatomical and morphological traits among these lineages, to detect trends in growth form evolution and developmental processes. METHODS: Transverse stem sections of different developmental stages of representatives of Asarum, Saruma, Lactoris, Hydnora, Thottea and Aristolochia were compared …

0106 biological sciencesLactorisanatomyAristolochiaceaeHeterochronySarumaPlant Science010603 evolutionary biology01 natural sciencesSecondary woodinessbiomechanicsAristolochiaPiperalesgrowth formLactorisPerianth-bearing PiperalesheterochronyBotany[SDE.BE.EVO]Environmental Sciences/Biodiversity and Ecology/domain_sde.be.evoHydnoraBiomechanicsGrowth formperianth-bearing PiperalesAsarumsecondary woodinessbiologyPlant StemsThotteaThotteaHydnoraAnatomyOriginal ArticlesAristolochiabiology.organism_classificationBiological EvolutionBiomechanical PhenomenaSaruma[SDE]Environmental SciencesAristolochiaceaePerianth[SDE.BE]Environmental Sciences/Biodiversity and EcologyAnatomy010606 plant biology & botany
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Conservation of Ptilostemon greuteri (Asteraceae), an endemic climate relict from Sicily (Italy): state of knowledge after the discovery of a second …

2022

Ptilostemon greuteri is one of the most endangered and poorly studied woody vascular plant species of the Mediterranean Basin, endemic to Sicily (Italy). Several peculiar traits confer to P. greuteri a character of uniqueness and an enigmatic attractiveness. In fact, at first glimpse the largest individuals of this species remind the most remarkable and peculiar cases of herbaceous genera (e.g., Echium, Senecio) turned woody on insular or insular-like mountain ecosystems. Following the discovery of a second population of this rare species, a project aiming at the study and conservation of P. greuteri was set up. We present here updated information on the distribution, conservation status, b…

WoodinessEcologyConservation BiologyConservation biologyEndemismIUCN Red List assessmentMicro-topographyWildfiresWoodinessMicrotopographyWildfireEcology Evolution Behavior and SystematicsNature and Landscape ConservationEndemismIUCN Red List assessment
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