Author/Editor		Bačič, Tinka; Dolenc-Koce, Jasna; Jogan, Nejc
Title		Luzula sect. Luzula (Juncaceae) in the south-eastern Alps: morphology, determination and geographic distribution
Type		članek
Source		Bot Helv
Vol. and No.		Letnik 117
Publication year		2007
Volume		str. 1-15
Language		eng
Abstract		Within the genus Luzula, the type section (Luzula sect. Luzula) is particularly variable and taxonomically diverse. Eight taxa of Luzula sect. Luzula occur in the Alps. While these taxa have distinct caryotypes. their identification based on morphological traits has remained problematic, and their geographic distribution is insufficiently known. A morphometric study was performed on herbarium material from Slovenia and neighbouring regions to identify aditional discriminative characters and to estabIish the distribution of taxa within the territory of Slovenia. We muasured 52 plant traits on 233 herbarium sheets and analysed the data with multivariate statistical techniques. Results showed a clear diffcrcntiation between L.. campetris and the seven other taxa, which were only discriminated by combinations of several quanitative characters. In general, rips fruits are required for a reliable determination. Four of thu eight taxa are widespread in Slovenia: L. campestris and L. divulatiformis in the lowlands (mostly < 800 m), L. exspectata at higher altitude (> 900 m), and L. multiflora across a broad altitudinal range (200-1900 m). Two taxa (L. divulgata and L. alpina) proved to be rare in Slovenia, and two taxa (L. sudetica and L. pallescens), previously reported for the area, were not confirmed. Distribution maps are presented for the six Slovenian taxa, and a new determination key is proposed for the eight Alpine taxa.
Descriptors		PLANTS ECOSYSTEM KARYOTYPING SPECIES SPECIFICITY SLOVENIA