| rein orchid | (n) any of several American wildflowers with a kidney-shaped lip, Syn. rein orchis |
| alaska rein orchid | (n) similar to coastal rein orchid but with smaller flowers; Alaska to Baja California and east to the Dakotas and Colorado, Syn. Habenaria unalascensis |
| bog rein orchid | (n) orchid with spikes of many fragrant white flowers on erect leafy stems; of wet or boggy ground through most of the West and northern North America, Syn. Habenaria dilatata, bog candles |
| coastal rein orchid | (n) stout orchid of central California to northern Washington having racemes of white fragrant bilaterally symmetrical flowers, Syn. Habenaria greenei |
| round-leaved rein orchid | (n) orchid having a raceme of large greenish-white flowers on a single flower stalk growing between two elliptic or round basal leaves lying on the ground; from northern Oregon and Montana across Canada to the eastern United States, Syn. Habenaria orbiculata |