From central to west and north Tibet, at the elevation of 3500～5200m, there are semiarid high mountains or highlands which lack vegetation and growing seasons but are decked with some pretty, deeply-coloured flowers. They may have small vegetable bodies vs big flower organs; both are showing the vitality and adaptability.
The major species of this region: Incarvillea younghusbandil, red flowered; I lutea, yellow; Iris potaninii, yellow; Jasminum stephanense, light red; J. officinale, white; Arenaria rhodantha, red; A. forrestii, white; Androseace tapete, pink; Clematis tenuifolia, orange.