{{Short description|Genus of flowering plants}} {{Automatic taxobox |image = Sedum spurium a1.jpg |image_caption = ''Phedimus spurius'' |display_parents = 2 |taxon = Phedimus |authority = Raf. |subdivision_ranks = Subgenera |subdivision = * ''Phedimus'' * ''Aizoon'' |type_species = ''Phedimus stellatus''{{sfn|Gontcharova et al|2006}} }}
'''''Phedimus''''' is a genus of the succulent family Crassulaceae (stonecrop family), with about 18 species, distributed in eastern Europe and Asia. The genus is described with two subgenera, but one of these is also recognized as a separate genus, ''Aizopsis''. ''Phedimus kamtschaticus'' (syn. ''Sedum kamtschaticum'') is widely grown as an ornamental ground cover and has gained the Royal Horticultural Society's Award of Garden Merit.<ref>{{cite web |title=''Sedum kamtschaticum'' orange stonecrop |url=https://www.rhs.org.uk/Plants/16964/Sedum-kamtschaticum/Details |date=2021 |publisher=The Royal Horticultural Society |access-date=22 June 2021 }}</ref>
==Description== Species are perennial or rarely annual herbs, usually glabrous stems, sometimes woody at base, from thin woody rhizome. Leaves decussate or alternate, with narrow base, and several hydathodes on lower face along margins. The flowering branches are erect or descending, with dense inflorescences exhibiting many flowered terminal pleiochasia (several buds come out at the same time). Flowers 4-7 parts, sepals usually unequal, petals free, usually spreading. The fruits are follicles, usually spreading and seeds costate-papillate (incompletely connate), but multipapillate in ''Phedimus selskianus''.{{sfn|Thiede|Eggli|2007}}
When treated as ''Phedimus'' ''sensu lato'', i.e. including ''Aizopsis'', subgenus ''Phedimus'' (''Phedimus sensu stricto'') has creeping and rooting stems, flowers white, pink, red or purplish and chromosome numbers x=5,6,7, while subgenus ''Aizoon'' has annual shoots often woody at base, emerging from woody rhizomes, flowers yellow, orange or reddish and x=8.{{sfn|Thiede|Eggli|2007}}
==Taxonomy== ''Phedimus'' is a genus in the family Crassulaceae, subfamily Sempervivoideae, tribe Umbiliceae, together with three other genera. It was segregated from the very large cosmopolitan and polyphyletic genus, ''Sedum'', where it was variously considered a section or subgenus.{{sfn|Ohba et al|2000}} Within the tribe it is a sister group to ''Aizopsis''. There, it is distinguished by flower colouration (pink or white flowers compared to the yellow flowers of ''Aizopsis''), floral morphology, distribution (Eurasia vs. Asia) and chromosome numbers (x=14 vs. 16). Some authors include ''Aizopsis'' as a subgenus:{{sfn|Gontcharova et al|2006}}{{sfn|Thiede|Eggli|2007}} * ''Phedimus'' subgenus ''Phedimus'' c. 5 species * ''Phedimus'' subgenus ''Aizoon'' c. 13 species
===Species=== {{div col|colwidth=18em}} *''Phedimus aizoon'' (L.) 't Hart *''Phedimus daeamensis'' T.Y.Choi & D.C.Son *''Phedimus ellacombeanus'' (Praeger) 't Hart *''Phedimus hybridus'' (L.) 't Hart *''Phedimus kamtschaticus'' (Fisch.) 't Hart *''Phedimus litoralis'' (Kom.) 't Hart *''Phedimus middendorffianus'' (Maxim.) 't Hart *''Phedimus obtusifolius'' (C.A.Mey.) 't Hart *''Phedimus odontophyllus'' (Fröd.) 't Hart *''Phedimus × pilosus'' (S.B.Gontch. & Koldaeva) J.M.H.Shaw *''Phedimus rhodocarpus'' (V.V.Byalt & Sun-Den-Kho) A.A.Gontch. *''Phedimus selskianus'' (Regel & Maack) 't Hart *''Phedimus sichotensis'' (Vorosch.) 't Hart *''Phedimus sikokianus'' (Maxim.) 't Hart *''Phedimus spurius'' (M.Bieb.) 't Hart *''Phedimus stellatus'' (L.) Raf. *''Phedimus stevenianus'' (Rouy & E.G.Camus) 't Hart *''Phedimus stoloniferus'' (S.G.Gmel.) 't Hart *''Phedimus subcapitatum'' (Hayata) S.S.Ying *''Phedimus yangshanicus'' Z.Chao {{div col end}}
==Distribution== Subgenus ''Phedimus'', Mediterranean to Caucasus. Subgenus ''Aizoon'' China, Japan, Korea and central Siberia.{{sfn|Thiede|Eggli|2007}}
==References== {{Reflist|20em}}
==Bibliography== {{refbegin|30em}} * {{cite book |last1=Thiede |first1=J |last2=Eggli |first2=U |editor-last=Kubitzki |editor-first=Klaus |editor-link=Klaus Kubitzki |title=Berberidopsidales, Buxales, Crossosomatales, Fabales p.p., Geraniales, Gunnerales, Myrtales p.p., Proteales, Saxifragales, Vitales, Zygophyllales, Clusiaceae Alliance, Passifloraceae Alliance, Dilleniaceae, Huaceae, Picramniaceae, Sabiaceae |year=2007 |chapter=Crassulaceae |pages=83–119 |publisher=Springer |chapter-url=https://books.google.com/books?id=PdSL7jBNX9EC&pg=PA83 |isbn=978-3540322146 }} ''([https://www.researchgate.net/publication/227205999_Crassulaceae full text at]'' ResearchGate) * {{cite journal |last1=Gontcharova |first1=S. B. |last2=Artyukova |first2=E. V. |last3=Gontcharov |first3=A. A. |title=Phylogenetic relationships among members of the subfamily Sedoideae (Crassulaceae) inferred from the ITS region sequences of nuclear rDNA |journal=Russian Journal of Genetics |date=June 2006 |volume=42 |issue=6 |pages=654–661 |doi=10.1134/S102279540606010X |s2cid=33249840 |url=http://biosoil.ru/files/00002900.pdf |ref={{harvid|Gontcharova et al|2006}} |archive-date=2017-08-09 |access-date=2019-10-15 |archive-url=https://web.archive.org/web/20170809055756/http://www.biosoil.ru/files/00002900.pdf |url-status=dead }} * {{cite journal |last1=Grulich |first1=Vit |title=Generic division of Sedoideae in Europe and the adjacent regions |journal=Preslia |date=1984 |volume=56 |pages=29–45 |url=https://www.preslia.cz/archive/Preslia_56_1984_29-45.pdf }} * {{cite journal |last1=Ohba |first1=Hideaki |last2=Bartholomew |first2=Bruce M. |last3=Turland |first3=Nicholas J. |last4=Kunjun |first4=Fu |title=New Combinations in Phedimus (Crassulaceae) |journal=Novon |date=2000 |volume=10 |issue=4 |pages=400–402 |doi=10.2307/3392995 |jstor=3392995 |bibcode=2000Novon..10..400O |url=http://flora.huh.harvard.edu/china/novon/Ohbaetal110-4.htm |ref={{harvid|Ohba et al|2000}} |archive-date=2021-08-20 |access-date=2019-10-16 |archive-url=https://web.archive.org/web/20210820160154/http://flora.huh.harvard.edu/china/novon/Ohbaetal110-4.htm |url-status=dead }} {{refend}}
==External links== * {{Commons category-inline}} * {{Wikispecies-inline}}
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Category:Phedimus Category:Crassulaceae genera Category:Taxa named by Constantine Samuel Rafinesque