Cirsium × stiriacum (Cirsium greimleri × rivulare) is a hybrid between C. greimleri and C. rivulare.[1][2]

Cirsium × stiriacum
Illustration of Cirsium × stiriacum (left) by Werner published 1853
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Cirsium
Species:
C. × stiriacum
Binomial name
Cirsium × stiriacum

It is a rare hybrid, known from only 4 herbarium specimens as of 2020.[3]

Distribution

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It is found only in the Lavanttal Alps and Karawanks.[3]: 85 

Description

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Illustration of Cirsium × stiriacum parts by Werner published 1853.

The type specimen was more similar to C. greimleri than to C. rivulare, but bore pinnately divided leaves, too thinly webbed on the underside for pure C. greimleri.[2]

The description of Reichenbach:[4]

Stems furrowed, slightly hairy; branched at the top, fairly hairless there; head-bearing branches evenly arranged; heads sometimes almost sessile; leaves encircling the stem, sinuously pinnate, sections triangular, here and there coarsely toothed or serrated; surface of the leaves sparse, veins somewhat more glandular-hairy; heads elongated, supporting linear, narrow, intact leaves; bracts lanceolate, dagger-pointed, protruding from the tip to the middle, sticky keeled, ciliate at the edge, protruding at the tip; flower border equal in length to the tube; truncated at the tip; somewhat lobed. Heads large. Flowers dark purple.

— Heinrich Gustav Reichenbach, Deutschlands Flora (1853)

Taxonomy

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Identified on 29 June 1903 by Karl Fritsch in the Lassnitz valley.[2] Although earlier authors believed it had been found by Tommasini on Snežnik,[4][2] that record was doubted by subsequent authors.[5]

See also

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References

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Text of Public Domain references available in article code.

  1. ^ Fritsch, Karl (1905). "Blütenbiologische Untersuchungen verschiedener Pflanzen der Flora von Steiermark" (PDF). Mitteilungen des Naturwissenschaftlichen Vereines für Steiermark. 42: 267–282. ISSN 0369-1136.
  2. ^ a b c d Fritsch, Karl (1906) [presented 1906-03-07]. "Über die in der Steiermark vorkommenden Arten und Hybriden der Gattung Cirsium" (PDF). Mitteilungen des Naturwissenschaftlichen Vereines für Steiermark. 43: 404–410. ISSN 0369-1136.
  3. ^ a b Vavrinec, Martin (2020-02-13). Geografická analýza mezidruhové hybridizace rodu Cirsium ve střední Evropě (Diplomová práce) (Thesis).
  4. ^ a b Reichenbach, Heinrich Gustav (1853). "Cirsium". Deutschlands Flora, mit höchst naturgetreuen, charakteristischen Abbildungen aller ihrer Pflanzenarten in natürlicher Größe und mit Analysen auf Kupfertafeln, als Beleg für die Flora Germanica Excursoria und zur Aufnahme und Verbreitung der neuesten Entdeckungen innerhalb Deutschlands und der angrenzenden Länder: Belgien und Holland, Dänemark, Preussen, Galizien, Polen, Siebenbürgen, Ungarn, Kroatien, Dalmatien, Istrien, Venedig, der Lombardei, Piemont, der Schweiz, dem Elsaß. Vol. 15. pp. 67–101.
  5. ^ Wraber 1998.

Further reading

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