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Valeriana collina
Wallroth's Valerian
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Photographer: Dr. Amadej Trnkoczy
ID: 0000 0000 0615 0091 (2015-06-02)Copyright © 2015 Dr. Amadej Trnkoczy
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INFORMATION PROVIDED WITH THE PHOTO
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date of photo May 30, 2015
latitude 46.36072 longitude 13.70204
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location
Lower Trenta valley, between villages Soča and Trenta, right bank of river Soča, Na Melu place, East Julian Alps (Posočje, Slovenia)notes Slo.: hribska špajka - syn.: Valeriana officinalis ssp. tenuifolia, Valeriana officinalis var. tenuifolia Vahl., Valeriana wallrothii Kreyer - Habitat: Former pasture, lightly southeast incline mountain slope, stony calcareous ground, full sun, low ground nutrition and dry place, average precipitations ~ 3.000 mm/year, average temperature 7 - 9 deg C, elevation 620 m (2.050 feet),alpine phytogeographical region. - Substratum: soil. - Comment: Valeriana is a large and interesting genus with about 250 species known worldwide (Ref.:3). Twelve of them are growing in Slovenia. Some of them are widely known and used as medical herbs with sedative effects (actually roots are usually used). While determination of those species, which grow high in the Slovenian mountains, from the smallest, very beautiful Valeriana supina, to medium size ones, like Valeriana montana, Valeriana tripteris, Valeriana saxatilis and Valeriana elongata is easy, those growing predominantly at lower elevations pose a much harder problem. They are usually grouped under the name Variana officinalis agg. The plants are highly variable and in literature taxonomically treated on different ways and under different names. For a more or less reliable determination one has to check presence of above- and/or underground stolons, hairs on different parts of the plant, number of leaflet pairs of stem leaves, the shape of the end leaflet of the leaves compared to side leaflets, size of stomata (pores in leaf surface, which allow gas exchange) on underside of middle stem leaves, etc. - The plants photographed are most probably Valeriana collina. They have almost all traits conform to the description of this species according to Ref: 1. and 2. - thin underground stolons, height of plants from 35 to 100 cm (measured from 55 to 90 cm), stomata between 27-35 μm long (measured average was 29 μm), proper shape and number of leaflets of the leaves and dry, calcareous habitat. However, the stem should be densely hairy, but it is, albeit markedly, rather sparsely hairy. Also leaf shape shown in Ref. 3 doesn't fit to the plants photographed. There were twenty or so flowering stalks at the place. - Ref.: (1) M.A.Fischer, W.Adler, K.Oswald, Exkursionsflora Österreich Liechtenstein, Südtirol, LO Landesmuseen, Linz, Austria (2005), p 796 (2) A.Martinči et all., Mala Flora Slovenije, Tehnična Založba Slovenije (2007) (in Slovene), p 495. (3) D. Aeschimann, K. Lauber, D.M. Moser, J.P. Theurillat, Flora Alpina, Vol. 2., Haupt (2004), p 394.camera Canon G11, 6.1-30mm / f 2.8-4.5
contributor's ID # Bot_881/2015_IMG8056 photo category: Plant - annual/perennial
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MORE INFORMATION ABOUT THIS PLANT
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Wallroth's Valerian (photographer)
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