Saxifraga callosa

Saxifraga callosa, the limestone saxifrage, is a species of flowering plant in the family Saxifragaceae, that is native to maritime alpine habitats in Western Europe (Italy, France and Spain). Growing to 50 cm (20 in) tall by 100 cm (39 in) broad, it is a clump-forming evergreen perennial with rosettes of narrow grey-green leaves that are coated in lime. The starry, pure white flowers are borne in long panicles in spring.

Saxifraga callosa
S. callosa subsp. callosa
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Saxifragales
Family: Saxifragaceae
Genus: Saxifraga
Species:
S. callosa
Binomial name
Saxifraga callosa
Synonyms
  • Evaiezoa callosa
  • Saxifraga australis
  • Saxifraga lantoscana
  • Saxifraga lingulata
  • Saxifraga thyrsoides

The Latin specific epithet callosa means “thick-skinned, with calluses”.[1]

Lower taxa

Saxifraga callosa is a variable species depending on location, Two subspecies and at least two varieties are recognised:-[2]

  • Saxifraga callosa subsp. callosa
    • var. australis
    • var. callosa
  • Saxifraga callosa subsp. catalaunica

Cultivation

Saxifraga callosa is cultivated as an ornamental garden plant. As it requires well-drained alkaline soil in full sun, it is often grown in an alpine house, where specialist conditions can be provided. It has gained the Royal Horticultural Society’s Award of Garden Merit.[3][4]

References
  1. Harrison, Lorraine (2012). RHS Latin for Gardeners. United Kingdom: Mitchell Beazley. ISBN 184533731X.
  2. "Flora Europaea". Royal Botanic Garden Edinburgh. Retrieved 3 November 2018.
  3. "RHS Plantfinder - Saxifraga callosa". Retrieved 1 November 2018.
  4. "AGM Plants - Ornamental" (PDF). Royal Horticultural Society. July 2017. p. 95. Retrieved 1 November 2018.
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