25
Jul
2010
Cirsium heterophyllum
Flowers | Magnoliopsida

Scientific Name - Cirsium heterophyllum (L.) Hill

Synonyms - Cirsium helenioides

Popular names - cirsio di Elena Cardo sad, melancholy Thistle.

Distribution and Habitat - originating in Europe - Siberia, growing on peat bogs, on wet meadows, along rivers, on the edge of forests at 800-2100 m altitude.

Description - herbaceous perennial. Stem robust, erect, simple. Leaves Sesi, amplesicaule, lanceolate, 5-7 x 20-30 cm tomentoase white on the underside. Capital 2-4 each, 3 cm in diameter, isolated or far from the top two branches, pear-shaped involucre, 2 x2.5 cm lower bracts lanceolate, the upper linear; Corola red-purple; Papus 23 mm. Blooms in June-August. Fruit achenes, obconica, top with a conical protuberance in the middle. Seeds pale white-yellow and purple. 2n = 34

Curiosity - discovered by Thomas Penny in 1581.

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