North America, south Alabama and north-western Florida. Grows in peaty meadows and sphagnum marshes.
Small, white bulbs growing from thin stolons. The upper half of the, 3-5 feet high, is almost devoid of , while the lower portion bears whorls of lanceolate . The nodding, recurved, Martagon-type are usually borne singly, although up to eight blooms have been observed. The warm, golden-yellow, heavily brown-spotted appear during June/July, and are marked with green nectary furrows.
L. iridollae was first discovered in the swampy ground of southern Alabama by Mrs Mary G. Henry during 1940; it is related to L. canadensc and L. superhum, andgerminates within one or two months from .