Human: Write a detailed description of a standender-trunked paper birches grows along a ridge to the northeast. Assistant: 
A stand of pale slender-trunked paper birches grows along a ridge to the northeast. Their bark is thin, white and smooth, separating into diaphanous strips that curl back from the trunk. Skinny saplings growing amid the taller elders are reddish-brown but share the same delicate pointed-oval leaves that turn golden in autumn.