Promenljivost osobina etarskog ulja vrste Clinopodium pulegium (Lamiaceae) u zavisnosti od fenološke faze

The variability of essential oil characteristics in different phenological stages of Clinopodium pulegium from its natural habitat (Svrljiški Timok gorge, Serbia) and from cultivated plants (Niš, Serbia) was determined. The essential oils were obtained from aerial parts of the plants by hydrodistillation and analyzed by GC-MS. These are the first data on the essential oil characteristics of plants of the population from the Svrljiški Timok gorge. Samples originating from both natural and cultivated populations were characterized by high amounts of essential oils in all stages of development (0.8% - 1.4%). Twenty-one compounds were identified, representing 95.3-99.6% of the total oils. Differences in the essential oil composition were more quantitative than qualitative. The quality of the essential oil was stable and did not vary with differences in environmental conditions. Dominance of the main components was modified by phenological stage. Pulegone was dominant in the vegetative (76.1% wild population, 62.7% cultivated population) and the flowering (49.5%, 64.6%) stages, while menthone (48.5%, 65.3%) displaced pulegone (34.7%, 18.4%) at the fruiting stage. Cultivated plants in the vegetative and flowering stages can be considered a significant source of pulegone, and in the fruiting stage a significant source of menthone. Careful selection of the developmental stage of the plant is a potential tool which could be employed to obtain the preferred chemical composition of C. pulegium for commercial use.U radu je praćena promenljivost količine i sastava etarkog ulja Clinopodium pulegium kroz različite stadijume razvoja biljke (vegetativni, stadijum cvetanja i plodonošenja). Materijal je sakupljan iz samonikle (klisura Svrljiškog Timoka) i gajene (Niš) populacije. Etarsko ulje je izolovano iz nadzemnih delova biljaka destilacijom vodenom parom i analizirano GC-MS metodom. Ovo su prvi podaci o osobinama etarskog ulja biljaka populacije iz klisure Svrljiškog Timoka. Svi uzorci kako iz samonikle tako i iz gajene populacije su se odlikovali velikim sadržajem ulja (0.8% - 1.4%) u svim stadijumima razvoja. Dvadeset jedna komponenta je identifikovana što predstavlja 95.3-99.6% ukupnog etarskog ulja. Razlike u sastavu ulja su bile više kvantitativne nego kvalitativne. Kvalitet etarskog ulja je bio stabilan a variranja uslovljena promenom sredine relativno mala. Dominacija glavnih komponenata je bila uslovljena promenama fenoloških faza. Pulegon je bio dominantan u vegetativnoj (76.1% u ulju biljaka samonikle populacije, 62.7% u ulju biljaka gajene populacije) i fazi cvetanja (49.5%, 64.6%), dok je menton bio dominantan (48.5%, 65.3%) u fazi plodonošenja. Rezultati su pokazali da se biljke u vegetativnoj i fazi cvetanja mogu smatrati značajnim izvorom pulegona, a u fazi plodonošenja značajnim izvorom mentona. Pažljivim odabirom razvojnog stadijuma biljke moguće je dobiti etarsko ulje željenog sastava koje bi se moglo upotrebiti u komercijalne svrhe

(2326-2327) Proposals to conserve the names \u3cem\u3eMicromeria varia\u3c/em\u3e with a conserved type and \u3cem\u3eM. hyssopifolia\u3c/em\u3e against \u3cem\u3eThymus ericifolius (Lamiaceae)\u3c/em\u3e

(2326) Micromeria varia Benth., Labiat. Gen. Spec.: 374. Mai 1834 [Angiosp.: Lab.], nom. cons. prop.Typus: [Spain, Canary Islands], Ins. Teneriffa (K barcode K000193466), typ. cons. prop. (2327) Micromeria hyssopifolia Webb & Berthel., Hist. Nat. Iles Canaries 3(2,3): 72. Dec 1844 [Angiosp.: Lab.], nom. cons. prop.Typus: [Spain, Canary Islands], “Thymus polymorpha sp. n.?; in rupestribus siccis Ins. Canar. vulgatissima”, Barker-Webb (FI, upper left-hand specimen of 5 on sheet). (=) Thymus ericifolius Roth, Catal. Bot. 2: 50. 1800 (‘ericaefolius’), nom. rej. prop. Neotypus (hic designatus per Bräuchler): [Spain, Canary Islands], “Habitat in Hispania” [on folder B-W 11017-000], “Hort. bot. Berol. W.” (B-W barcode 11017-010)

The botanical expedition of Hermann Wendland in Central America: a nomenclatural study and travel report.

The plant collections gathered by Hermann Wendland during an expedition to Central America in 1856 – 1857 are significant because of the high number of new species that were described from them. Many of Wendland’s specimens have been lost, misplaced or have incorrectly been assessed or overlooked in regards to their nomenclatural or typification status. Wendland’s Central American specimens in GOET have recently been collated as a group and digitized, thus making them available for wider study. About 1,280 herbarium specimens associated with Wendland’s expedition have been located in a number of herbaria. These represent about 540 distinct gatherings. Wendland’s travel outcomes are associated with the publication of 185 names. The first part of this work deals with the nomenclature of these names. Original material is found in 30 plant families in the following groups: Bryophytes (2 families), Lycophytes (1), Ferns (7), and Angiosperms (20). Of the 185 names associated with Wendland’s material, 50 names are represented by holotypes, and 67 lectotypes and 5 neotypes have been published by previous authors. Herein, 51 new lectotypes and 5 neotypes have been designated. Typification remains unresolved for 7 names. The second part of this work consists of an annotated English translation of Wendland’s expedition correspondence originally published in German in Hamburger Garten- und Blumenzeitung (1857). This translation provides information concerning the itinerary and the locations and dates of several of Wendland’s collections. Las herborizaciones de Hermann Wendland durante su expedición a América Central en 1856 – 57 son relevantes porque constituyeron la base para la descripción de un importante número de nuevas especies. Muchos de sus especímenes se han perdido, extraviado, o han sido evaluados de forma incorrecta en términos de nomenclatura y tipificación. No obstante, sus especímenes centroamericanos conservados en GOET han sido recientemente procesados y digitalizados, lo cual posibilita la realización de nuevos estudios. Se han localizado en diferentes herbarios alrededor de 1,280 especímenes procedentes de la expedición. Éstos representan unas 540 colecciones. Los materiales de la expedición de Wendland están asociados a la publicación de 185 names. La primera parte de este trabajo trata sobre la nomenclatura de dichos nombres. Existe material original en 30 familias de plantas correspondientes a briófitos (2 familias), licófitos (1), helechos (7) y angiospermas (20). De los 185 nombres asociados al material de Wendland, 50 están representados por holotipos, así como 67 lectotipos y 5 neotipos fueron publicados en trabajos anteriores. En la presenta contribución se designan 51 lectotipos y 5 neotipos. Asimismo, 7 nombres permanecen sin tipificar. En la segunda parte del trabajo se presenta una traducción anotada en inglés de la correspondencia de Wendland durante su expedición, originariamente publicada en alemán en Hamburger Garten- und Blumenzeitung (1857). La traducción brinda información de su itinerario, además de las localidades y fechas de algunas de sus colecciones