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| Plants with many zygomorphic flowers either on a spike, solitary, or in a raceme. Flowers with 3 sepals often petal-like, 3 petals, one forming a lip which differs in shape, size and often color. Leaves simple parallel-veined. | |
| Sort by: Traits or Genus | |
| Flora of North America: Discussion, key to genera (opens new window) | |
| Flower Formula: Sepals 3; Petals 2+1z | Glossary |
| Genus (Click for Taxon List) |
WI Taxa (map link) |
Photo | Genus Traits | Google Searches |
|---|---|---|---|---|
| Amerorchis
|
1 |  |
Flowers pink with white, lip not inflated, spotted in loose cluster. Leaf broad, solitary, almost basal . | Images Information |
| Aplectrum
|
1 |  |
Flowers pink with white, lip not inflated in loose cluster. Leaf broad, solitary, dark green with whitish veins, basal. | Images Information |
| Arethusa
|
1 |  |
Flowers pink; with bearded lower, not inflated lip; solitary. Leaf grass-like, solitary, on the stem. | Images Information |
| Calopogon
grass pink |
2 |  |
Flowers pink; upper lip bearded, not inflated; in few-flowered, loose cluster. Leaf grass-like, solitary, near the base. | Images Information |
| Calypso
calypso orchid |
1 |  |
Flowers pink; lower lip inflated, bearded; flower solitary. Leaf broad, solitary, basal. | Images Information |
| Coeloglossum
frog orchid |
1 |  |
Flowers small greenish; lip not inflated with pouch-like spur; in dense cluster. Leaves alternate, broad. | Images Information |
| Corallorhiza
coralroot |
6 |  |
Flower pink, orange; lip not inflated; in a spike-like cluster. Plants mostly without chlorophyll. No leaves. | Images Information |
| Cypripedium
lady's-slipper, moccasin-flower |
9 |  |
Flowers pink, yellow, or white; lower lip large, inflated, not bearded with 1-3 flowers. Leaves broad, several, basal. | Images Information |
| Epipactis
helleborine |
1 |  |
Flowers greenish-purple; inflated lip; in a loose spike-like cluster. Leaves alternate along stem. | Images Information |
| Galearis
|
1 |  |
Flowers pink with white, lip not inflated, not spotted in loose cluster. Leaves 2, basal, broad. | Images Information |
| Goodyera
rattlesnake-plantain |
5 |  |
Flowers white or green; lip inflated; in a tight spike-like cluster. Leaves basal. | Images Information |
| Liparis
liparis, twayblade |
2 |  |
Flowers purple-brown, yellow-green; lip not inflated, not bearded; in loose spike-like cluster. Leaves 1 pair near the base, broad. | Images Information |
| Listera
listera, twayblade |
3 |  |
Flowers greenish, red-purple; lip not inflated, not bearded; in spike-like cluster. Leaves 1 pair near middle of stem, broad, opposite. | Images Information |
| Malaxis
adder's-mouth, adder's-mouth orchid |
2 |  |
Flowers small, greenish-white; upper lip not inflated; not bearded; in spike-like cluster. 1 leaf halfway up stem. | Images Information |
| Platanthera
bog orchid |
14 |  |
Flowers pink, white, purple, greenish; lip not inflated; sometimes fringed; often hooded in loose cluster or spike. Leaf broad; basal or alternate. | Images Information |
| Pogonia
|
1 |  |
Flowers pale pink; with bearded lower, not inflated lip; usually 1 or 2. Leaves 1 along the stem, 1 beneath flower, grass-like. | Images Information |
| Spiranthes
lady's-tresses |
12 |  |
Flower white; lip not inflated, not bearded; in a tight spike-like cluster. Leaves mostly basal, stem leaves scale-like. | Images Information |
| Triphora
nodding-caps |
1 |  |
Flowers pale pink, white; with lip not inflated, not bearded; usually 1 or 2. Leaves usually alternate, broad. | Images Information |