Английская Википедия:Hladnikia
Шаблон:Short description Шаблон:Speciesbox
Hladnikia is a monotypic genus of flowering plants belonging to the family Apiaceae.[1] Its sole species, Hladnikia pastinacifolia, is a Slovenian paleoendemite,[2][3] restricted to the area of only 4 kmШаблон:Sup, located in Trnovo Forest Plateau, karst plateau of Western Slovenia.[4] German botanist Heinrich Gottlieb Ludwig Reichenbach named the genus after Carniolan botanist and founder of Ljubljana Botanical Garden Franz Hladnik.[2][5]
Description
Hladnikia pastinacifolia is a monocarpic herbaceous perennial plant, which takes a few vegetation periods to develop into a flowering plant.[4] Individuals, which have erect flowering stem, can reach from 15 to 30 centimetres of height.[6] At first plant's leathery and glossy leaves are simple shaped and arranged into rosettes. Later on, as their area increases, leaves also change shape into lobate.[4][6] Hladnikia pastinacifolia resembles well-known celery (Apium graveolens), but has thicker foliage and shorter leaf stems.[2] The species' root is long and lignified. The plant's flower has white, heart-shaped and 1 mm long petals.[6]
Not much is known about the plant's exact breeding system. This plant species is entomophilous and has multiple different pollinators. It is thought that outcrossing happens occasionally.[4] The species flowering period is between Mai and July.[2] After successful pollination seeds that don't have any special dispersal adaptation develop between the end of August and into September. A fruit is a schizocarp, which after maturing splits into two 4 mm sized mericarps,[4] 2 mm wide.[6]
Hladnikia pastinacifolia chromosome number is 2n = 22.[6]
Distribution and conservation
The plant is a Slovenian paleoendemic species restricted to small area (4 kmШаблон:Sup) in Trnovski gozd. There these plants grow only on southern slopes of the plateau and two isolated areas located 9 km away on the northern slopes.[4] As the plant species is not a habitat specialist its growing areas are various; Hladnikia pastinacifolia was found on stony grasslands, rock crevices and screes. Laboratory molecular analyses have shown that Hladnikia pastinacifolia is a Pleistocene survivor in situ.[6]
Even though its population trend is labeled as stable by IUCN Red list, it has data deficient (DD) conservation status.[7][8] Among mentioned threats are human intrusions and disturbance (such as recreational activities) as well as natural system modifications.[8] The Trnovo Forest Plateau is listed as Natura 2000 site.[7][9] Because of its small area of distribution and different threats the species is studied for possible cryopreservation.[3][10][11]
References
- ↑ Шаблон:Cite web
- ↑ 2,0 2,1 2,2 2,3 Шаблон:Cite web
- ↑ 3,0 3,1 Шаблон:Cite thesis
- ↑ 4,0 4,1 4,2 4,3 4,4 4,5 Шаблон:Cite journal
- ↑ Шаблон:Cite web
- ↑ 6,0 6,1 6,2 6,3 6,4 6,5 Шаблон:Cite journal
- ↑ 7,0 7,1 Шаблон:Cite web
- ↑ 8,0 8,1 Шаблон:Cite iucn
- ↑ Шаблон:Cite web
- ↑ Шаблон:Cite thesis
- ↑ Шаблон:Cite thesis
