According to my phone, the tree in this sketch is an ash. That makes sense to me since the seeds hanging from the branches remind me of maple seeds. Maple and ash are both hardwoods, so I imagine their seeds would be similar.

Please visit my Etsy shop for my artwork for sale inspired by my autistic brother Mike at: 

https://autisminspiredart.etsy.com

My other artwork for sale is at: 

https://otherartbyjack.etsy.com