Search results for "Linaceae"
showing 5 items of 5 documents
Capparaceae
2020
L’exceptionnelle richesse floristique de la Nouvelle-Calédonie est mondialement connue. Plus de 3 400 espèces de plantes vasculaires indigènes y sont répertoriées, dont les trois-quarts sont endémiques de l’archipel. L’endémisme ne concerne pas seulement les espèces, mais aussi les genres (près d’une centaine) et même trois familles. La diversité se décline aussi sur le plan écologique, en lien avec l’histoire géologique originale de la Nouvelle-Calédonie, qui a favorisé le micro-endémisme et les espèces inféodées aux substrats ultramafiques. De nouvelles espèces continuent à être découvertes, aussi reste-t-il nécessaire de poursuivre prospections et recherches botaniques, afin de mieux com…
The Phylogeny of Linum and Linaceae Subfamily Linoideae, with Implications for Their Systematics, Biogeography, and Evolution of Heterostyly
2009
The genus Linum consists of over 180 species, the most famous being L. usitatissimum, the source of linen and linseed oil. The eight genera of Linaceae subf. Linoideae, of which Linum is the largest, exhibit a complex biogeographic distribution, inhabiting all continents except Antarctica. Numerous species in Linoideae are heterostylous, but the ancestral breeding system of the group has not been determined. We present phylogenetic analyses of 44 species representing all eight genera of subf. Linoideae and 37 species of Linum, with data from the chloroplast (ndhF, trnL-F, trnK3′ intron) and the nuclear ITS, with Hugonia (Linaceae subf. Hugonioideae) as outgroup. Sequences of rbcL from 48 sp…
Effects of root hemiparasitic infection on host performance: Reduced flower size and increased flower asymmetry
2001
We conducted two pot experiments to examine the relationship between hemiparasitic plant (Rhinanthus serotinus, Scrophulariaceae) infection and host (Linum usitatissimum, Linaceae and Brassica rapa ssp. oleifera, Brassicaceae) performance. We were especially interested in the effects of hemiparasitism on the size and shape asymmetry of host flowers, since neither subject has been studied before. We also conducted a field experiment to examine the effects of shape asymmetry of B. rapa ssp. oleifera flowers on pollination success. The shape of flowers produced by both L. usitatissimum and B. rapa ssp. oleifera plants grown without parasites was less asymmetric, and for both host species, the …
Disentangling the role of heat and smoke as germination cues in Mediterranean Basin flora
2010
9 páginas, 1 figura, 4 tablas.
First record for the flora of Italy and lectotypification of the name Linum elegans (Linaceae)
2017
Linum elegans has been detected in calcareous rocky garrigues on the Gargano promontory (Apulia, SE-Italy), representing the first record for the Italian flora and the first one outside the Balkan Peninsula. The geographical disjunction may provide evidence for past amphi-Adriatic/amphi-Ionic terrestrial connections. The population found was ascribed to L. campanulatum in the past. As a consequence, a comparison between these two species is undertaken. Furthermore, the name L. elegans is here lectotypified on a specimen preserved at G, and the IUCN assessment of the species in Italy is briefly discussed.