In a bowl, whisk together flour, baking powder, salt, sugar, ginger, cinnamon, allspice and nutmeg. Cut in the shortening until mixture is like coarse crumbs.
Add in the buttermilk and pumpkin and mix with a spoon.
Drop by the spoonful onto a large baking sheet.
Bake at 450 degrees for 12 to 15 minutes. Makes 12 biscuits.