Involucre, a circle of bracts subtending a flower-cluster.
Involute, rolled inward.
Keel. (See carina.)
Keeled, furnished with a keel, or carina.
Lacerate, torn; irregularly and deeply cleft.
Laciniate, cut into narrow, slender teeth, or lobes.
Liliaceous, lily-like.
Limb, the dilated and usually spreading portion of a perianth or petal as distinct from the tubular part, or claw.
Line, the twelfth part of inch.
Linear, narrow and elongated, with parallel margins.