ID on what wood this cane is made from please.

Perhaps is is a mullein stalk. Walking stick kale, mullein, and yucca all form stiff but light stalks that can be used for walking sticks. I've never seen any in person, but there are lots of images of walking stick kale, and it doesn't look like those. Yucca has ribs that go across the length. The few pictures I've seen of mullein show some longitudinal ridges.

The problem w. mullein is that it has a very soft pith. To prevent the bottom end from splitting, some of the pith is removed, and the hole plugged w. a tougher material. What's the tip of yours like?

The tip is not plugged I feel it may have had a cap previously and the centre is quite soft I can feel it moving when I push hard on it with my thumb. thank you for your help also.

whatever it turns out to be it looks interesting.any chance of getting the silver smiths name and date form the marks?

Its a birmingham assay mark with a old style lower case b and the makers mark is P B I have been unable to identify them so far.

Judging from the rootball and they type of root system it appears to have: Bamboo or some other cane type plant. Can you post a full picture of the entire cane?

Very nice cane! I never saw a sterling silver colar so heavy like this one. Beautiful mid 1800's piece of wood.