''Rosularia'' is a small genus of the family (biology), 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 (plant), ''Umbilicus'', and raised to the level of genus by Otto Stapf (botanist), Stapf (1923) Thus the genus bears the botanical authority (De Candolle, DC) Otto Stapf (botanist), Stapf of both authors. In 1930, Alwin Berger, 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 ''Sedum sempervivoides, 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 (2013): * ''Rosularia adenotricha'' (Wall. ex Edgew.) C.-A. Jansson ** Rosularia adenotricha subsp. viguieri, ''Rosularia adenotricha'' subsp. ''viguieri'' (Raym.-Hamet) C.-A. Jansson * ''Rosularia aizoon'' (Fenzl) A. Berger * ''Rosularia alpestris'' (Kar. & Kir.) Boriss ** Rosularia alpestris subsp. marnieri, ''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 North 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''.

Uses

A number of species are cultivated as ornamental garden plants, and have been used in traditional medicine.

References

Bibliography

;Books * * * * '
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' ResearchGate) ;Articles * * * * ;Websites * * * * Crassulaceae Crassulaceae genera {{Crassulaceae-stub