Search results for "ASTERACEAE"
showing 10 items of 209 documents
Typification of the name Galatella sorrentinoi (Asteraceae)
2020
The name Galatella sorrentinoi Todaro (Asteraceae) is lectotypified with a specimen housed in the Herbarium Mediterraneum Panormitanum (PAL). The specimen selected as the lectotype agrees with protologue and with the current usage of the name.
Heterotheca subaxilaris (Compositae), nuevo xenófito para la flora ibérica
2017
Heterotheca subaxillaris (Compositae), a new xenophyte for the iberian flora. A first reference on the presence of Heterotheca subaxillaris (Lam.) Britton & Rusby (Compositae), native of North America, in the iberian flora is provided. This species has been located at the CV-10 highway, in la Pobla Tornesa, Castellón province (Spain).
Hieracium jurassicum subsp. serrapretense (Asteraceae), a new hawkweed taxon from the pollino national park (Southern Italy)
2018
A new hawkweed taxon endemic to the Pollino National Park (southern Italy), Hieracium jurassicum subsp. serrapretense, is described and illustrated. Information on its morphology, distribution, ecology and taxonomic relationship is provided.
Volatile components from aerial parts of Centaurea gracilenta and C. ovina ssp. besserana growing wild in Bulgaria
2011
The essential oils of Centaurea gracilenta Velen. (CG) and C. ovina Pall. ex Willd. ssp. besserana (DC.) Dostál (COB) growing wild in Bulgaria, were studied by GC and GC-MS. Forty-five compounds for CG, representing the 90.1% of the oil, and 68 compounds for COB, representing the 91.9% of the oil, were identified. The oils were rich in sesquiterpenoids (33.4% for CG and 27.3% for COB), hydrocarbons (28.3% for CG and 10.7% for COB) and carbonylic compounds (12.7% for CG and 13.1% for COB). Fatty acids were abundant only for COB (31.3%). beta-Eudesmol (12.8%), nonacosane (11.8%) and p-vinyl guiacol (7.5%) were recognized as the main constituents for CG, while hexadecanoic acid (21.4%), spathu…
Chemical composition of the essential oil of Phagnalon saxatile (L.) Cass. (Asteraceae) growing wild in Southern Italy
2005
Abstract The essential oil from aerial parts of Phagnalon saxatile (L.) Cass. (Asteraceae) was obtained by hydrodistillation. The oil content was 0.15% (v/w), on a dry weight basis. The oil composition was analyzed by GC and GC/MS. Altogether 66 compounds were identified accounting for 93.2% of the oil. Sesquiterpenes represent the 23.9% of the oil. In the oil were also present fatty acids (21.8%) and waxes (19.3%). The oil shows no antibacterial activity.
Introduction et dispersion d'une espèce envahissante : le cas de l'ambroisie à feuilles d'armoise (Ambrosia artemisiifolia L.) en France
2011
National audience; Ambrosia artemisiifolia L. (common ragweed) was accidentally introduced into France in the 1860s. Its single vector of introduction in Europe was red clover seeds (Trifolium pratense L.), probably coming from Pennsylvania, United States at the time. A. artemisiifolia was later introduced into France in many places and at different times. This species has no natural or effective seed dispersal mechanisms and the spread of this weed in the territory is ensured by human activities that carry the seeds and create disturbed environments favourable to its development. It is now established in the Rhone Valley and a number of different factors (cropping system evolution, climate…
A new naturalized alien plant in Sicily: Cotula australis (Sieber ex Spreng.) Hook. f. (Asteraceae) on the Acropolis of Lipari Island (Aeolian Archip…
2018
In February 2018 a copious population of Cotula australis Hook f. (Asteraceae, Anthemideae) was found on the cobblestones of the Acropolis of Lipari Island (Aeolian Archipelago, NE Sicily). This population represents the first record in southern Italy and is located at a distance of about 470 km as the crow flies from the nearest neighbour. From the phytosociological point of view, C. aus- tralis dominates a therophytic subnitrophilous dwarf vegetation of trampled sites which can be ascribed to the cosmopolitan class Polygono-Poetea annuae Rivas Mart. 1975. This plant communi- ty is proposed as a new association, Galio muralis-Cotuletum australis, which can be considered a Mediterranean vic…
Composition of the essential oil from flowerheads of Chrysanthemum coronarium L. (Asteraceae) wild growing in Southern Italy
2004
The essential oils from the aerial parts of Chrysanthemum coronarium L. (Asteraceae) growing wild in two different localities of Southern Italy, Lascari (L) and Palinuro (P), were obtained by hydrodistillation in a 0.13–0.16% yield. The oils were analysed by GC and GC–MS; 68 constituents, amounting to 89.0% of the oil (L), and 43 constituents, amounting to 91.6% of the oil (P), were identified. The trans‐spiroketal–enol ether 2‐(2,4‐hexadiynylidene)‐1,6‐dioxaspiro[4,4]non‐3‐ene (trans‐tonghaosu) with chrysanthenyl and lyratyl esters and camphor were the main components of the oils.
Composition and antimicrobial activity of the essential oil of Achillea falcata L. (Asteraceae).
2005
The composition of the essential oil from aerial parts of Achillea falcata L. (Asteraceae) growing wild in Lebanon was analysed by GC and GC–MS; 58 compounds, representing 94.4% of the oil, were identified. Isomers of the cyclobutane ethanol, 1-methyl-2-(1-methylethenyl), grandisol (21.4%) and fragranol (16.8%) were the main components of the oil. Also abundant were artemisia ketone (5.2%), terpinen-4-ol (4.5%) and 1,8-cineole (4.0%). The essential oil shows inhibitory activity mainly against Gram-positive bacteria.
Volatile components of Centaurea calcitrapa L. and Centaurea sphaerocephala L. ssp. sphaerocephala, two Asteraceae growing wild in Sicily
2006
The volatile components of the flowerheads of Centaurea calcitrapa L. (C.c.) and Centaurea sphaerocephala L. ssp. sphaerocephala (C.s.) were obtained by hydrodistillation and identified by GC and GC–MS. Altogether 96 components were identified, 66 in C. calcitrapa and 68 in C. spaerocephala, mostly fatty acids (32.8%, C.c. and 44.2%, C.s.) and hydrocarbons (32.3%, C.c. and 15.9%, C.s.). 9,12-Octadecadienoic acid (15.8%, C.c.) and hexadecanoic acid (30.7%, C.s.) were the most abundant fatty acids; tricosane (8.0%, C.c.) and heptacosane (4.9%, C.s.) were the main hydrocarbons. Sesquiterpenes were also present as hydrocarbons (10.1% for 14 components in C.c. and 9.2% for 13 components in C.s.)…