Re: Acer sterculiaceum ssp sterculiaceum Acer villosum is an old name for this maple which is now known as "Acer sterculiaceum ssp sterculiaceum", that's why I rename this thread. Native to the Himalayas, young plants of this species are subject to sudden die back when grown in Western europe.
Thanks Andre for the reminder on the correct nomenclature (and for moving the page to the right title)! The specimen is probably A. sterculiaceum subsp. franchetii; the tree the seed was from was labelled 'Acer villosum' (presumably sensu lato), but on checking just now, Bean's Trees & Shrubs Hardy in the British Isles (supplement: 41) cites a specimen of A. franchetii at Dawyck, while not citing any specimens of subsp. sterculiaceum there
You're well ahead in the progress of spring! Haven't checked mine above recently but I think it'll still be in tight bud.
Just looked in Stearn's Dictionary of Plant Names for Gardeners. Sterculius was the Roman god of privies (stercus = dung). Do these maples stink?
Wallich doesn't give any reasons for his choice of name (original description; scroll down to next page for the rest). It could be something simple like finding the first specimen growing beside a dung heap.