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L

Lamiaceae

(formerly Labiatae) Mint Family. Comprised of 236 genera and more than 7,000 species. Most members are perennial or annual herbs, though some are woody shrubs. Members of this family usually have square stems, leaves in pairs up the stem, flowers in circles round the stem, flowers with hood at the top and lip at the bottom, and aromatic foliage.
Entry link: Lamiaceae

Lanceolate

Lance-shaped, much longer than wide and tapering to each end.
Entry link: Lanceolate

Larval

Pertaining to immature stage of juvenile insects.
Entry link: Larval

Laterally Compressed

A body shape in which the body depth is more than the body width.
Entry link: Laterally Compressed

Leaf Margin

The edge of a leaf.
Entry link: Leaf Margin

Lenticel

A small, dot-like area of corky tissue on the bark.
Entry link: Lenticel

Ligule

The collar around the top of the sheath where it meets the blade.
Entry link: Ligule

Liliaceae

Lily Family. Comprised of 16 genera and 635 species of herbs and shrubs that are native primarily to temperate and subtropical regions. Members of this family usually have bulbs or other storage organs; long, thin leaves, six petals, six stamens, amd a seed capsule which forms inside the flower.
Entry link: Liliaceae

Lythraceae

Loosestrife Family. Comprised of 31 genera and about 650 species of trees, small shrubs and perennial herbs. Members of this family are characterized by the their petals being crumpled in the bud and the many-layered outer integument of the seed.

Entry link: Lythraceae