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Cirsium acaule
Dwarf Thistle
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Photographer: Dr. Amadej Trnkoczy
ID: 0000 0000 0915 2508 (2015-09-28)Copyright © 2015 Dr. Amadej Trnkoczy
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INFORMATION PROVIDED WITH THE PHOTO
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date of photo Sep 5, 2008
latitude 45.45027 longitude 13.84172
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location
Between villages Abitanti and Gradin, about 50 m north of the local road under power lines (Istria, Slovenia)notes Slo.: brezstebelni osat - Habitat: Karst dry grassland, almost flat terrain; skeletal, stony, calcareous ground; open, sunny, dry place; exposed to direct rain; average precipitations 1.100 - 1.200 mm/year, average temperature 12-14 deg C, elevation 450 m (1.500 feet), submediterranean phytogeographical region. - Substratum: soil. - Comment: To recognize Cirsium acaule is an easy task. The plant is far the smallest of all genus Cirsium members as well as of similar Carduus species. It has almost no stem. If it has it, it's never taller than 15 cm. It has large, up to 5 cm in diameter, nice purple-red flower heads. The flowers photographed were at the end of their flowering season and hence didn't display any more their full beauty. - Cirsium acaule is widely distributed. It grows also in montane and subalpine elevations of almost all parts of the Alps with exception of northeast Alps and Slovenian Alps. It can be found also in Jura Mountains, Carpathians, Pyrenees and Apennines. In Slovenia one can find it in its south and southwest part, particularly in submediterranean phytogeographical region of the country. Interestingly it was found also in West Julian Alps west of Posočje in UTM square 9547 UTM on the Italian side of its area, but not (yet?) on our side (Ref.: 6 and 7). - Ref.: (1) K.Lauber and G.Wagner, Flora Helvetica, 5. Auflage, Haupt (2012), p 1146. (2) D. Aeschimann, K. Lauber, D.M. Moser, J.P. Theurillat, Flora Alpina, Vol. 2., Haupt (2004), p 588. (3) M.A. Fischer, W. Adler, K. Oswald, Exkursionsflora für Österreich, Liechtenstein und Südtirol, LO Landesmuseen, Linz, Austria (2005), p 930. (4) A. Martinči et all., Mala Flora Slovenije (Flora of Slovenia - Key) (in Slovenian), Tehnična Založba Slovenije (2007) (in Slovene), p 680. (5) E.J. Jäger, Rothmaler 3, Exkursionsflora von Deutschland, 11. Aufl., Elsevier, Spectrum (2007), p 549. (6) N. Jogan (ed.), Gradivo za Atlas flore Slovenije (Materials for the Atlas of Flora of Slovenia), CKSF (2001), p 109. (7) L.Poldini, Nuovo Atlante corologico delle piante vascolari nel Friuli Venezia Giulia,University of Trieste (2002), p 140.camera Nikon D70 /Nikkor Micro 105mm/f2.8
contributor's ID # Bot_294/2008_DSC3095 photo category: Plant - annual/perennial
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MORE INFORMATION ABOUT THIS PLANT
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| common names
Dwarf Thistle (photographer)
View all photos in CalPhotos of Cirsium acaule Check Google Images for Cirsium acaule |
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The photographer's identification Cirsium acaule has not been reviewed. Click here to review or comment on the identification. |
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For other uses, or if you have questions, contact Dr. Amadej Trnkoczy amadej.trnkoczy[AT]siol.net. (Replace the [AT] with the @ symbol before sending an email.) |
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