| phylogeography of the qinghai-tibetan plateau endemic juniperus przewalskii (cupressaceae) inferred from chloroplast dna sequence variation. | the vegetation of the northeast qinghai-tibetan plateau is dominated by alpine meadow and desert-steppe with sparse forests scattered within it. to obtain a better understanding of the phylogeography of one constituent species of the forests in this region, we examined chloroplast trnt-trnf and trns-trng sequence variation within juniperus przewalskii, a key endemic tree species. sequence data were obtained from 392 trees in 20 populations covering the entire distribution range of the species. s ... | 2005 | 16156819 |