Plants with yellow or green flowers
 Lithospermum canescens (Hoary Puccoon) |
 Lithospermum incisum (Narrow-Leaved Puccoon) |
 Lithospermum ruderale (Woolly Gromwell) |
 Lomatium cous (Biscuit-Root) |
 Lomatium dissectum (Mountain Wild Parsnip) |
 Lomatium foeniculaceum (Hairy-Fruited Parsley) |
 Lonicera dioica (Twining Honeysuckle) |
 Lonicera involucrata (Involucrate Honeysuckle) |
 Lonicera villosa (Blue Fly Honeysuckle) |
 Lotus corniculatus (Bird's-Foot Treefoil) |
 Lysimachia ciliata (Fringed Loosestrife) |
 Lysimachia thyrsiflora (Tufted Loosestrife) |
 Madia glomerata (Tarweed) |
 Malaxis monophyllos var. brachypoda (White Adder's Mouth) |
 Malaxis paludosa (Bog Adder's Mouth) |
 Matricaria discoidea (Pineapple Weed) |
 Medicago lupulina (Black Medick) |
 Mentzelia albicaulis (White-Stem Blazingstar) |
 Mimulus glabratus (Smooth Monkey Flower) |
 Mimulus guttatus (Yellow Monkey Flower) |
 Mitella nuda (Bishop's Cap) |
 Monolepis nuttalliana (Spear-Leaved Goosefoot) |
 Musineon divaricatum (Leafy Musineon) |
 Myosurus minimus (Least Mousetail) |
 Neoholmgrenia andina (Upland Evening Primrose) |
 Neottia borealis (Northern Twayblade) |
 Neottia cordata (Heart-Leaved Twayblade) |
 Nothocalais cuspidata (Prairie False Dandelion) |