Drosera-anglica_1

Description:

Drosera anglica Huds., syn.: Drosea longifolia L.EN: English Sundew, Great Sundew, DE: Langblatt-SonnentauSlo.: dolgolistna rosikaDat.: June 10. 2008Lat.: 45.90000 Long.: 14.10000 (coordinates not precise)Code: Bot_270/2008_DSC8994Habitat: nutrients poor wetland, small marshland next to a local road; flat terrain; mostly sunny; elevation 570 m (1.870 feet); average precipitations 1.800-2.000 mm/year, average temperature 8-9 deg C, borderline between Dinaric and prealpine phytogeographical region. Substratum: wet soil.Place: ejna dolina valley, next to the local road from village Hotedrica toward the settlement Medvedje Brdo, (about 2 km north from the village Hotedrica), Notranska, Slovenia EC. Comment: Genus sundew (Drosera) is large. It encompasses (depending on source) from 150 to more than 200 species. It can be found on all continents except Antarctica. But, only three species (hybrids excluded) are native to Europe as well as toSlovenia.Drosera anglica is widely distributed insectivorous plant (see Ref.: 8) and circumpolar boreal-montane element. The plant gets a part of nutrients needed from captured insects. Therefore, it is able to occupy relatively infertile habitats with very little nutrients and minerals available. Plants catch mostly small insects.Their leaf surface is covered with special hairs, each one topped with a red oval gland surrounded by a droplet of viscous liquid that sparkles from far like morning dew. These glands have three functions. They secrete droplets of the 'liquid glue' that catch and hold the insects, produce the enzymes needed to digest them, and absorb the nutrients released when insects decompose. As the insects struggles to free themselves they activate folding up of the leaves around them and neighboring hairs ensnare them even more securely. Once digestion is completed and the glandular hairs absorb the nutrients, they resume their initial positions waiting on new catch.Drosera anglica is a relatively rare species in Slovenia, significantly rarer than common sundew (Drosera rotundifolia). It is considered endangered. Taking into account its very broad distribution, IUCN-Red list considers it 'near threatened' (NT) species (Ref.: 9). Suitable habitats are disappearing apparently unstoppably. To worsen the situation, the species is highly intolerant to nitrogen (Ref.: 7), which makes many of the remaining wetlands unsuitable for settlement because of increasing artificial fertilization of land. Protected according to: Uredba o zavarovanih prostoiveih rastlinskih vrstah, poglavje A, Uradni list RS, t. 46/2004 (Regulation of protected wild plants, chapter A, Official Gazette of Republic Slovenia, no. 46/2004), (2004).Pravilnik o uvrstitvi ogroenih rastlinskih in ivalskih vrst v rdei seznam, Uradni list RS, t. 82/2002 (Regulation of enlisting of endangered plant and animal species onto Red List, Official Gazette of Republic Slovenia, no. 82/2002) (2002). Enlisted in the Slovene Red List of rare and endangered species, marked by "V" representing a vulnerable species.Ref.:(1) Personal communication with Mr. Branko Dolinar, www.orhideje.si(2) M.A. Fischer, W. Adler, K. Oswald, Exkursionsflora fr sterreich, Liechtenstein und Sdtirol, LO Landesmuseen, Linz, Austria (2005), p 385.(3) A. Martini et all., Mala Flora Slovenije (Flora of Slovenia - Key) (in Slovenian), Tehnina Zaloba Slovenije (2007), p 242. (4) gobotany.newenglandwild.org/species/drosera/anglica/ (accessed Oct. 28. 2018)(5) www.honda-e.com/A02_World Maps/WorldMap_Drosera.htm (accessed Oct. 27. 2018)(6) www.labunix.uqam.ca/~fg/MyFlora/Carnivorous/Droseraceae/d... (accessed Oct.27. 2018)(7) www.brc.ac.uk/plantatlas/plant/drosera-anglica (accessed Oct. 28. 2018)(8) www.youtube.com/watch?v=gM5sYPstXSQ (accessed Oct.27. 2018)(9) www.iucnredlist.org/search?query=drosera%20anglica&se... (accessed Oct. 28. 2018)