Celmisia Saxifraga
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''Celmisia saxifraga'', commonly known as the small snowdaisy, is a perennial herb in the Asteraceae family. It is native to Tasmania and Victoria, where it grows in alpine grasslands above the snowline.


Description

Like other members of the Asteraceae family, ''C. saxifraga'' has a composite flower head with both disk and ray florets. Inflorescence are a typical daisy arrangement with white outsides and a yellow centre. The entire inflorescence can be 3 cm across, and is often held well above the rosette on a hairy stem growing to 15 cm. The fruit is small, hard, and dry, similar to a sunflower seed. This is often called an achene, but in Asteraceae is more accurately called a cypsela. The primary difference between the two being that a cypsela is a single fruit formed from two ovaries (as in ''C. saxifraga'') while an achene describes a fruit formed from a single ovary. The leaves of ''C. saxifraga'' are simple and entire, growing to 3 cm long. They are glaucous silver and hairy. ''C. saxifraga'' can be distinguished from the similar and co-occurring ''C. asteliifolia'' by its leaves. The leaves of ''C. saxifraga'' are shorter (~3 cm) than those of ''C. asteliifolia'' (up to 18 cm).


Etymology

"Saxifraga" is a combination of the Latin words ''saxum'', meaning "stone", and ''frangere'' meaning "to break". The name "stone-breaker" is however thought to refer to plant in the genus ''
Saxifraga ''Saxifraga'' is the largest genus in the family Saxifragaceae, containing about 465 species of holarctic perennial plants, known as saxifrages or rockfoils. The Latin word ''saxifraga'' means literally "stone-breaker", from Latin ' ("rock" or " ...
'' being used in treating kidney stones. It is unclear whether ''C. saxifraga'' is named for breaking rocks or for its similarity to certain ''Saxifraga'' species which are also herbaceous and rosette-forming.


References

{{Taxonbar, from=Q15562278
saxifraga ''Saxifraga'' is the largest genus in the family Saxifragaceae, containing about 465 species of holarctic perennial plants, known as saxifrages or rockfoils. The Latin word ''saxifraga'' means literally "stone-breaker", from Latin ' ("rock" or " ...