Cirsium acaule

Cirsium acaule
	Cirsium acaule/acaulon (Dwarf Thistle)
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Genus:	Cirsium
Species:	C. acaule
Binomial name
	Cirsium acaule; (L.) A.A.Weber ex Wigg. 1780 not Scop. 1780 nor Ledeb. 1833
Synonyms
	Synonymy Carduus acaulis L. ; Carduus caulescens Pers. ex Steud. ; Carduus gmelini Steud. ; Carduus rosenii Vill. ; Carduus spinosus Gueldenst. ex Ledeb. ; Cirsium allionii Spenn. ; Cirsium alpestre Nägeli ; Cirsium bipontinum F.W.Schultz ; Cirsium consanguineum DC. ; Cirsium decipiens Nyman ; Cirsium decoloratum W.D.J.Koch ; Cirsium exigium Bubani ; Cirsium fallax Franch. ; Cirsium lachenalii W.D.J.Koch ; Cirsium rosenii Vill. ; Cirsium sorocephalum DC. ; Cnicus affghanicus C.Winkl. ex Petr. ;

Cirsium acaule or acaulon has the English name dwarf thistle or stemless thistle. It is widespread across much of Europe.^[2] It is often found on short, calcerous grasslands.

Description

Cirsium acaule is a perennial herb. The leaves are a spreading rosette, spiny, 10 to 15 cm long.

There is usually only one flower head, although there can sometimes be 2 or 3. Usually it is not stalked from the leaf rosette. The flower head is 3 to 4 cm long, the florets are red/purple. They flower from June to September.^[3]

References

^ ^a ^b The Plant List, Cirsium acaule (L.) A.A.Weber ex Wigg
^ Altervista Flora Italiana, Cardo nano, Cirsium acaule includes photos and European distribution map
^ Rose, Francis (1981). The Wild Flower Key. Frederick Warne & Co. pp. 382–383. ISBN 0-7232-2419-6.

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[june-1] The Plant List, Cirsium acaule (L.) A.A.Weber ex Wigg

[2] Altervista Flora Italiana, Cardo nano, Cirsium acaule includes photos and European distribution map

[The_Wild_Flower_Key-3] Rose, Francis (1981). The Wild Flower Key. Frederick Warne & Co. pp. 382–383. ISBN 0-7232-2419-6.

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