'Trees' in the Bible

'Do not injure the land, nor the sea, nor the trees, till we may seal the servants of our God upon their foreheads.'

and the first messenger did sound, and there came hail and fire, mingled with blood, and it was cast to the land, and the third of the trees was burnt up, and all the green grass was burnt up.

these are the two olive trees, and the two lamp-stands that before the God of the earth do stand;