Typification of the genus Myriactis Less. (Compositae: Astereae)

2004·0.4 MB·

by  Li Song Wang

58 Comp. Newsl. 41,2004
Typification ofthegenusMyriactisLess.
(Compositae:Astereae)
Li-SongWang& Hua Peng
KunmingInstituteofBotany,ChineseAcademyofSciences,
Kunming,650204,China
e-mail:[email protected]
Myriactis Less, contained two species when published but was not typified. The
genus is lectotypifiedherein,based onMyriactisnepalensis.
Keywords: nomenclature, typification, lectotypification, Asteraceae, Compositae,
Astereae, Myriactis.
WorkbythefirstauthorduringthepreparationofMaster'sdissertation,onthelocal
floraofMt.Xiaobaicaoling,YunnanProvince,China,showedthattherewasaproblem
withthegenusMyriactis.Thisgenus,withc. 12species,isdistributedfromCaucasus
through southern and southeastern Asiato New Guinea, with one species in South
America(Bremer1994).
Lessing (1831) established Myriactis with two species, M. nepalensis and M.
wallichii,but didnotdesignatethetypeofthegenus. However, hedid indicatethat
he had seen a specimen ofeach ofthe species in the Hornemann Herbarium, and
published them basedonthe specimens collectedby Wallich (Lessing 1831). The
holotypes ofM. nepalensis andM. wallichiihavebeen located in Copenhagen(C).
Myriactisnepalensis was illustrated intheprotologue (Lessing 1831) anditis clear
thatthegeneric characterswere abstractedfromthisspecies.
Thegenusislectotypifiedas follows:
Myriactis Less., Linnaea 6: 127 (1831). Lectotype (designated here): Myriactis
nepalensisLess.
MyriactisnepalensisLess.,Linnaea6: 128(1831).Type: [Nepal]: 'NapaliaWallich'
[s.n.,s.dat.] (holotypeC,photographseen).
MyriactiswaltichiiLess.,Linnaea6: 129(1831).Type:[Nepal]: 'NapaliaWallich'[s.n,
s.dat.] (holotypeC,photograph seen).
Comp. Newsl. 41,2004 59
Acknowledgements
Weareextremelygrateful toDrD.J.NicholasHind(K), forgivingmuchhelp,and
thanksarealsoduetoProf.OlofRyding,forprovidingphotographsofthetypesinC.
References
Bremer,K. 1994.Asteraceae: CladisticsandClassification. TimberPress,Portland,
Oregon,pp.426-427.
Lessing,C.F. 1831.Myriactis.Linnaea6: 127-129.