spur-shaped

Fancy a creature measuring twenty-eight inches in expanse of wing, its large leathery ears standing out from the sides and top of the head, and an erect spur-shaped appendage on the tip of the nose, -- the grin, and the glistening black eye, all combining to make up a figure which reminds one of some mocking imp of fable.

The Western World Picturesque Sketches of Nature and Natural History in North and South America William Henry Giles Kingston 1847

Would it be too bold to suppose that some ancient Linaria, or allied form, and some ancient Viola, had all petals spur-shaped, and that all cases of

More Letters of Charles Darwin — Volume 2 Charles Darwin 1845

The ordinary irregular flowers may possibly be degenerated descendants of a more completely organized ancestor, and some of the cases of peloria may therefore be instances of reversion; some ancient _Linaria_ may, perhaps, have had all its petals spur-shaped, and the cases of irregular peloria now found may be reversions to that original form.

Vegetable Teratology An Account of the Principal Deviations from the Usual Construction of Plants Maxwell T. Masters