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Saxifraga aspera
''Saxifraga aspera'' is a species of saxifrage known by the common name of rough saxifrage. In German it is known as ''ドイツ語:Rauhhaariger Steinbrech''. It is placed in section ''Trachyphyllum'' of the genus ''Saxifraga''. There are two subspecies, ''Saxifraga aspera'' subsp. ''aspera'' and ''Saxifraga aspera'' subsp. ''micrantha''.〔(''Saxifraga aspera'' ) Schede di botanica: Plant profile. Retrieved 2012-04-28.〕 It is a plant of the pan-Arctic tundra and is also found in Europe at moderately high altitudes in the Alps, Pyrenees and northern Apennines.
==Description==
Rough saxifrage is a perennial herb with short, tufted, basal rosettes growing in small, loose clumps to a height of about . The margins of the linear lanceolate leaves are fringed with short bristly hairs giving the plant a rough appearance. The foliaceous buds in the axils of the leaves are only half as long as their protecting leaves, a fact that distinguishes this species from the rather similar mossy saxifrage, ''Saxifraga bryoides''. The flowers are up to in diameter and are borne singly or in few-flowered spikes on long, erect stems clad with a few small leaves. Each flower has five calyx lobes and five, slightly overlapping, broad white or cream coloured petals with a yellow blotch near the base and sometimes a number of yellow spots. The ten stamens are in two whorls, one slightly longer than the other. The ovary is superior and the fruit is a two-celled capsule.〔〔 Rough saxifrage flowers in June and July.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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