Romanzoffia is a small genus of flowering plants in the family Hydrophyllaceae (waterleaf family), which most modern treatments place within the broader family Boraginaceae. The genus contains five accepted species, commonly known as mistmaids or mistmaidens, all native to the Pacific coast and mountain ranges of western North America.
The species range from California in the south northward through Oregon, Washington, British Columbia, and Alaska, extending to the Aleutian Islands. They grow in rocky, often moist or seasonally wet habitats — cliff faces, talus slopes, and subalpine meadows — within their western North American range.
Plants in this genus are low-growing herbs, either annual or perennial depending on species, forming patchy mats or small spreading clumps. They are recognizable by their attractive bell-shaped white flowers, which give rise to the common name mistmaidens, and they are considered desirable ornamentals in suitable climates.
Etymology
The genus name Romanzoffia honors Count Nikolai Rumyantsev (Romanzoff), an eighteenth-century Russian statesman and patron of science who sponsored Pacific exploration voyages during which specimens of the genus were collected.
Distribution
The genus is native to western North America, ranging from California north to Alaska and the Aleutian Islands. Species occupy rocky, often moist habitats including cliff faces, talus slopes, and subalpine zones along the Pacific coastal ranges.
Taxonomy Notes
Romanzoffia was traditionally placed in the family Hydrophyllaceae (waterleaf family). Modern molecular phylogenetic treatments, reflected in GBIF and APG classifications, subsume Hydrophyllaceae within the much larger family Boraginaceae. Wikipedia retains the traditional Hydrophyllaceae placement; GBIF assigns the genus to Boraginaceae.
