February cherry

An arresting sight in a Bath front garden, near the river, on 8 Feb 2020. A very small mop-head, with bright pink single flowers. I suppose it's something like Prunus 'Pendula rubra', grafted onto a standard of Tibetan Cherry (Prunus serrula) with its unique glossy red bark, a best-of-both-worlds thing. I didn't know you could do that, but the Wikipedia entry for P. serrula does mention that P. serrulata crowns are sometimes grafted onto it.

Prunus 'Pendula rosea' is often placed within the Prunus x subhirtella complex, which makes sense given that it flowers in mild spells throughout the winter.

But I have also seen it named Prunus pendula 'Pendula rosea' and Prunus spachiana 'Pendula rosea' .

Prunus x subhirtella (Higan Cherry, winter-flowering cherry) has no wild population. 

 Prunus spachiana has been supposed to be one of the parents of P. x subhirtella, but its own taxonomic status is uncertain. The other hypothetical parent is Prunus incisa (Fuji Cherry), itself regarded as a cultigen. All very complicated!