Sparre: verschil tussen versies

DNA analyzn <ref name=Ran>{{en}} [http://www.sciencedirect.com/science/article/pii/S1055790306002284 Jin-Hua Ran, Xiao-Xin Wei, Xiao-Quan Wang 2006 : Molecular phylogeny and biogeography of ''Picea'' (''Pinaceae''): implications for phylogeographical studies using cytoplasmic haplotypes, ''Molecular Phylogenetics and Evolution'', 41/2, p. 405–419] </ref><ref name=Sigurgeirsson>{{en}} Aðalsteinn Sigurgeirsson & Alfred E. Szmidt 1993 : Phylogenetic and biogeographic implications of chloroplast DNA variation in ''Picea'', ''Nordic Journal of Botany'', 13/3, p. 233–246] </ref> ên angetôond da de tradiesjonêele indêeliengn gestundgesteund ip de morfologie (lêer van de vorm) van noaldn en keegles kunstmoatig zyn. E stuudje van nie lange geleen <ref name=Ran/> voend da ''Picea breweriana'' e groend-poziesje ad, gevôgd deur ''Picea sitchensis'', en de andre sôortn wierdn voddre ipgedêeld in drie kloadn. Da alles lat ziene dat de sparrn in [[Nôord-Amerika]] oenstoan zyn.

:* ''Picea breweriana'' – Brewer-sparre, Klamath-gebergte, [[Nôord-Amerika; platslikke endemiesche sôorte

:* ''Picea engelmannii'' – Engelmann-sparre, westlike gebergtn van Nôord-AmerikaernAmerika; belangryk in de bosbow

:* ''Picea glauca'' – Witte sparre, nôordlik Nôord-Amerika; belanrykbelangryk in de bosbow

:* ''Picea morrisonicola'' – Tajwaneesche sparre, Tajwan] (hooggebergte)