There's a shrub called Betula glandulosathat is progressing north very rapidly.

有一种叫做 Betula glandulosat 的灌木正在迅速向北移动。

Intermingled with the pines were shorter, ragged-looking trees with lumpy trunks, wizened branches and fine twigs like gnarled fingers: Betula pubescens, downy birch.

混在一起的是矮、参差不齐的，，枝枯，细枝像多节的手指：白桦、绒毛桦。

Betula occidentalis , the only birch, is a small, slender tree restricted to the eastern flank of the range along stream-sides below the pine-belt, especially in Owen's Valley.

Betula occidentalis 是唯一的白桦，是一种细长的，仅限于带下方沿溪流两侧分布的东侧，尤其是在欧文谷。