From The Collaborative International Dictionary of English v.0.48 :
Lady's comb \La"dy's comb"\, (Bot.)
An umbelliferous plant ({Scandix Pecten-Veneris), its
clusters of long slender fruits remotely resembling a comb.
[1913 Webster]
From The Collaborative International Dictionary of English v.0.48 :
Cammock \Cam"mock\, n. [AS. cammoc.] (Bot.)
A plant having long hard, crooked roots, the Ononis
spinosa; -- called also rest-harrow. The Scandix
Pecten-Veneris is also called cammock.
[1913 Webster] Camomile