engleski

Valantia hispida L. (Rubiaceae) in termophyllous vegetation on the island of Vis (Central Adriatic, Croatia)

Valantia hispida L. is a circummediterranean species distributed only in areas with arid and hot climate. Despite of wide area of its distribution, the plant is rare with relatively few known localities. For the flora of Croatia the species was discovered as early as in 1975 on the island of Svetac (Sv. Andrija) in the Central Adriatic. In 2002 the species was found on the small island of Sušac and further in 2003 it was also discovered in the archipelago of Vela and Mala Palagruža, the most pelagic of all Croatian islands. During floristic investigations on the Island of Vis in 2004, further localities were discovered. The species was found in extreme termophyllous scree and on rocky habitats near the town of Komiža. On the first locality V. hispida was growing in vegetation of summer deciduous shrubs with Euphorbia dendroides as dominant edificator species and with prevalence of therophytes and geophytes. The second locality was characterised by degraded form of maquis with Rosmarinus officinalis, Erica manipuliflora and Brachypodium retusum as dominant species. Conclusively can be said that the species V. hispida in Croatia is limited only on the most arid and hot part of Croatian coast i.e. on xeromediterranean zone, which encompasses the most remote Eastern Adriatic islands.

Valantia hispida; Rubiaceae; vegetation; Vis; Croatia

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