CALCAR

Dictionary of Science, Literature and Art · 1842 · p. 7

(I,at. calcar, a spur.) This term is applied by botanists to all hollow prol(mgations downwards of leaves or the parts of a flower. The long hollow horns which hang down from one of the sepals of a Tropcelum, or from the labellum of an Orchis, or the curved bodies enclosed within the hood of an Aconite flower, are described by this name. [s. 193]