Knot-grass.

Lady's-slipper, large yellow.

Lady's-slipper, purple.

Lady's-slipper, small yellow.

Lady's tresses.

Lake Oquaga.

Lamprey.

Lapwing.

Lark. See Skylark.

Lark, shore or horned (OTOCORIS ALPESTRIS and O. A. PRATICOLA) and note.