Coefficient of Conservatism:
Coefficient of Wetness:
Bogs and, especially, fens, often on floating mats, even to the edge of the water; relic in conifer swamps, and occasionally in other wet places such as interdunal hollows or rock crevices and pools on Lake Superior (Isle Royale). Very rare and local in southeastern Michigan.
The leaves are typically a conspicuous pale blue-green above, at least when young (darker when mature), not glossy as in Kalmia polifolia, and they generally have an “alligator” pattern of lateral veins (often ± impressed). They are usually white with minute pubescence beneath, but are occasionally a grayish green, and are usually much larger than those of the seasoning herb, rosemary [Rosmarinus officinalis L., in the mint family], but appear similar, especially when dried, in the linear shape with revolute margins.