I remember this tree, a sugar maple that stood right outside the back door. I loved drawing it. The tree was full of romance. In 2003 hurricane Isabel damaged all the maples so badly that we had to have them cut down. We were lucky that none of the trees completely uprooted. None of them fell.
However the storm left them all tilting precariously. It was clear that any ordinary thunderstorm could finish them off. They had figured in paintings and drawing over the years. These two drawings are ones I found in an old notebook. I ignored the leaves in these and fixed all my attention on the graceful trunks and branches.
And then they met their match.
Aletha Kuschan's Weblog 
Beautiful sensual drawings. I am slowly working my way through Harold Speed’s book “The art and practice of Drawing. I am sure you know it. He writes: “Great things are only done in art when the creative instinct of the artist has a well-organised executive faculty at its disposal.” and defines art as “the rhythmic expression of feeling”. Your tree drawings have a nice rhythmic line which suggests your affinity to these trees.
Wonderful drawings -love them!