-
Salix retusaRetuse-leaved WillowSlo.: topolistna vrbaGrowing like a tree, but horizontaly!"Dat.: Aug. 12. 2013Lat.: 46.44293 Long.: 13.64503Code: Bot_742/2013_IMG3991andDat.: Aug. 22. 2013Lat.: 46.44178 Long.: 13.64405Code: Bot_745/2013_DSC7572(Fig.: #22)Habitat: Upland stony grass land, pasture, among large calcareous boulders, modestly eastward inclined terrain, full sun, exposed to precipitations, average precipitations ~3.000 mm/year, average temperature 1-2 deg C, elevation 1.970 m (6.450 feet), alpine phytogeographical region.Substratum: soil.Place: Mangart flats west of Mt. Margart, 2.677 m (8.783 feet) near Mangart Alpine road, East Julian Alps, Posoje, Slovenia ECComment: Salix retusa is a common high-elevation plant in Slovenia. It is often called 'The smallest tree of the world'. However, in higher elevations of the Julian Alps four Salix species grow, which could compete for this title. Actually Salix retusa is even not the lowest one. These trees have their small but strong trunks and branches made of true wood with very dense growth rings. Some plants can be very old. But they never grow tall but stay low on ground. Salix herbacea even hides its branches underground. Only its leaves can be seen giving no impression that they belong to a tree. This is of cause a way of accommodation to very harsh living conditions at high altitudes. Salix retusa can sometimes be quite of significant size in Julian Alps and can cover up to one m2 (10 square feet) of ground; however it is never taller than a few cm.Ref.:(1) A.Martini et all., Mala Flora Slovenije, Tehnina Zaloba Slovenije (2007), p 467. (2) K.Lauber and G.Wagner, Flora Helvetica, 5. Auflage, Haupt (2012), p 412.
-
-
Charcos, Puntarenas, Costa Rica
-
Casearia sylvestris Sw.SALICACEAELocal: Parque Ecolgico Canjerana, Braslia, Brasil.Ref.: Silva Jr., M.C. 100 rvores do Cerrado. Rede de Sementes do Cerrado, 2005.
-
Trembling Aspen (Populus tremuloides) in their autumn glory
-
Apopka, Florida, United States
-
-
Charcos, Puntarenas, Costa Rica
-
Graaff-Reinet, Eastern Cape, South Africa
-
Paranoa, Federal District, Brazil
-
-
Montana, United States
-
Cambridge, Vermont, United States
-
Salix rosmarinifoliaSlo.: romarinolistna vrbaComment: Salix rosmarinifolia is the only one among 26 Salix taxons (bastards not taken into account) growing in Slovenia which is protected by law. It is also the only one dwarf Salix which doesn't grow in high mountains but in lowland wet grassland and marches. Enlisted in the Slovene Red List of rare and endangered species, marked by "V" representing a vulnerable species.Dat.: May 23. 2009Lat.: 45.84178 Long.: 14.59274Code: Bot_344/2009-8384Habitat: Wet grassland, full sun, precipitations 1.300-1.400 mm/year, average temperature 8-10 deg C, elevation 490 m (1.600 feet), Pre-Dinaric phytogeographical region. Place: West of village Raica, near Raica stream, Dolenjska, Slovenia EC
-
Salix alpina Scop., syn.: Salix jacquinii Host.Alpine Willow, DE: Alpen Weide, Ostalpen WeideSlo.: alpska vrbaDate: May 18. 2015 (female catkins)Code: Bot_875/2015_DSC6604Lat.: 46.43281 Long.: 13.63980Habitat: mountain pasture; moderately inclined mountain slope, north aspect; shallow, skeletal, generally calcareous ground, locally probably somewhat acid (associated with Loiseleuria procumbens); sunny, open place; exposed to direct rain; elevation 1.930 m (6.330 feet); average precipitations ~ 3.000 mm/year, average temperature 0-2 deg C, alpine phytogeographical region. Substratum: soil among rocks.Place: Mt. Mangart plateau, south of mountain pass between Mt. Mangart and Mt. Mali vrh, toward the top of Mt. Mali vrh, East Julian Alps, Posoje, Slovenia EC Comment: A few species of very large genus Salix (willows, which are usually more or less large trees or shrubs) drastically accommodated their habitus to harsh conditions in sub- and alpine elevations. Their growth is highly reduced, so they are only a few cm tall trees with true wooden braches. Some even hide their 'trunks' underground. These are so called dwarf willows. In Slovenian Alps we know five species of them. To distinguish them only from their leaves requires quite a bit of experience. When they bloom another problem arises. They are unisexual plants. This means that there exist male plants with male flowers (catkins) only and female plants with female flowers (catkins) only. Male and female catkins differ significantly in their appearance. So, one ends up with ten different but still similarly looking plants to be recognized. Still, quite a challenge!Salix alpina is the tallest of all five. Usually it is not much higher than a few cm, but it can be up to 30 cm tall. One can recognize its male plants by catkins, which have long violet-pink stamens. Catkins develop approximately at the same time as leaves, which are densely silvery hairy when young. Grown up leaves are more or less glabrous but at the edge distinctly fringed. Female catkins are densely silvery hairy and look similar to what we know as 'normal' silvery-gray willow catkins. When they ripe the fruits are glabrous (without hairs) and reddish. Salix alpina is restricted to East Alps and Carpathians. Ref.:(1) D. Aeschimann, K. Lauber, D.M. Moser, J.P. Theurillat, Flora Alpina, Vol. 1., Haupt (2004), p 462.(2) M.A. Fischer, W. Adler, K. Oswald, Exkursionsflora fr sterreich, Liechtenstein und Sdtirol, LO Landesmuseen, Linz, Austria (2005), p 440.(3) A. Martini et all., Mala Flora Slovenije (Flora of Slovenia - Key) (in Slovenian), Tehnina Zaloba Slovenije (2007), p 467. (4) K.Lauber and G.Wagner, Flora Helvetica, 5. Auflage, Haupt (2012), p 414.
-
Charcos, Puntarenas, Costa Rica
-
-
Orinda, California, United States
-
Zaragoza: Aragn (Espaa)Amentos masculinos. Familia: SALICACEAEDistribucin: Se distribuye por el C y S de Europa, W de Asia y N de Africa; introducida en otros pases de Europa, Macaronesia y Amrica del N, etc.; casi toda la Pennsula Ibrica, salvo en algunas zonas de Galicia, Cornisa Cantbrica y Baleares; se reparte por todo Aragn, aunque parece ms raro en la mitad N.Tamao y tipo de poblaciones (gregarismo): Puede formar alamedas, aunque ms frecuentemente aparece mezclado con otras especies, salpicando los bosques de ribera.Hbitat: Crece en mrgenes de ros, barrancos y otras masas de agua, ya sea formando densas alamedas o, con ms frecuencia, interviniendo en bosques ribereos formados por diversas especies: Populus nigra, Salix alba, Fraxinus angustifolia, etc.Preferencia edfica: Indiferente Rango altitudinal: 80- 1120 ( 1300 ) m Floracin: Marzo - AbrilFructificacin: Mayo - JunioForma Biolgica: Macrofanerfito caducifolioExtractado del Atlas de la Flora de Aragn (Herbario de Jaca)
-
Coquimbo Region, Chile
-
-
-
Commerce City, Colorado, United States
-
New York, New York, United States