Source : Webster's Revised Unabridged Dictionary (1913)

Alpestrine \Al*pes"trine\, a. (Bot.)
   Growing on the elevated parts of mountains, but not above the
   timbe? line; subalpine.

Alpestrine \Al*pes"trine\, a. [L. Alpestris.]
   Pertaining to the Alps, or other high mountains; as,
   Alpestrine diseases, etc.

Source : WordNet®

alpestrine
     adj : growing at high altitudes [syn: {subalpine}]