''Rosularia'' is a small genus of the family Crassulaceae. It includes about 28-35 species from Europe, the Himalayas, and northern Africa.

Taxonomy

''Rosularia'' was originally described by De Candolle (1828) as a section of the genus Umbilicus, and raised to the level of genus by Stapf (1923) Thus the genus bears the botanical authority ( DC) Stapf of both authors. In 1930 Berger included it in family Crassulaceae subfamily Sedoideae, as one of 9 genera. He further divided it into two sections (Eu-Rosularia and Ornithogalopsis) and further series, transferring some species of ''Sedum'' to it. Since then a number of species have been transferred in and out of the genus, including ''S. sempervivoides'', which at one stage was placed in '' Prometheum''. The genus ''Sempervivella'' was submerged in ''Rosularia''. The genus is now placed within the Leucosedum clade, tribe Sedeae, subfamily Sempervivoideae of the Crassulaceae, but is embedded within ''Sedum'' paraphyletically.

Species

''Rosularia'' contains about 28 species. The following species and subspecies were accepted by

The Plant List The Plant List was a list of botanical names of species of plants created by the Royal Botanic Gardens, Kew and the Missouri Botanical Garden and launched in 2010. It was intended to be a comprehensive record of all known names of plant species ...

(2013): * '' Rosularia adenotricha'' (Wall. ex Edgew.) C.-A. Jansson ** ''Rosularia adenotricha'' subsp. ''viguieri'' (Raym.-Hamet) C.-A. Jansson * '' Rosularia aizoon'' (Fenzl) A. Berger * '' Rosularia alpestris'' (Kar. & Kir.) Boriss ** '' ''Rosularia alpestris'' subsp. ''marnieri''(Raymond-Hamet ex H. Ohba) Eggli * '' Rosularia blepharophylla'' Eggli * '' Rosularia borissovae'' U.P.Pratov * '' Rosularia chrysantha'' (Boiss. & Heldr. ex Boiss.) Takhtajan * '' Rosularia cypria'' (Holmboe) Meikle * '' Rosularia davisii'' Muirhead * '' Rosularia elymaitica'' (Boiss. & Hausskn. ex Boiss.) A. Berger * '' Rosularia glabra'' (Regel & Winkl.) A.Berger * '' Rosularia globulariifolia'' (Fenzl) A. Berger * '' Rosularia haussknechtii'' (Boiss. & Reut. ex Boiss.) A. Berger * '' Rosularia jaccardiana'' (Maire & Wilczek) H. Ohba * '' Rosularia libanotica'' (L.) Sam. * '' Rosularia lineata'' (Boiss.) A.Berger * '' Rosularia lutea'' Boriss. * '' Rosularia pallida'' (Schott & Kotschy) Stapf * '' Rosularia pallidiflora'' (Holmboe) Meikle * '' Rosularia persica'' (Boiss.) A. Berger * '' Rosularia pilosa'' (Fischer ex M. Bieberstein) Boriss. * '' Rosularia platyphylla'' (Schrenk) A.Berger * '' Rosularia radicosa'' (Boiss. & Hohen.) Eggli * '' Rosularia rechingeri'' C.-A. Jansson * '' Rosularia rosulata'' (Edgew.) H. Ohba * '' Rosularia schischkinii'' Boriss. * '' Rosularia sedoides'' (Decne.) H. Ohba * '' Rosularia semiensis'' (J. Gay ex A. Richard) H. Ohba * '' Rosularia sempervivoides'' (Fischer ex M. Bieberstein) Boriss. * '' Rosularia serpentinica'' (Werderm.) Muirhead * '' Rosularia serrata'' (L.) A.Berger * '' Rosularia subspicata'' (Freyn) Boriss.

Distribution and habitat

''Rosularia'' is found in arid and semi-arid regions from N. Africa (Morocco, Ethiopia), through the eastern Mediterranean to Central Asia (north of Tien Shan and east of W Himalaya), including Pakistan.

Ecology

''Rosularia'' is an important larval host for the Central Asian butterfly ''

Parnassius apollonius ''Parnassius apollonius'' is a member of the snow Apollo genus ''Parnassius'' of the swallowtail family, Papilionidae. It is found in central and south Kazakhstan, the south Altai, Saur, Tarbagatai, Dzhungarsky Alatau, Tian-Shan, Ghissar-Darv ...

''.

Uses

A number of species are cultivated as

ornamental garden plants Ornamental plants or garden plants are plants that are primarily grown for their beauty but also for qualities such as scent or how they shape physical space. Many flowering plants and garden varieties tend to be specially bred cultivars that i ...

, and have been used in traditional medicine.

References

Bibliography

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