Ourisia is a genus of herbaceous flowering plants in the family Plantaginaceae, belonging to the order Lamiales. The genus comprises around 30 recognised species distributed across a markedly disjunct range: the Andes of South America, Tasmania, and New Zealand — a classic austral distribution pattern shared by several other plant lineages. In New Zealand, species of Ourisia are commonly known as mountain foxgloves or snowy mountain foxgloves, names that reflect both their tubular flowers and their affinity for montane and subalpine habitats.
Plants in the genus are low-growing perennial herbs, typically found in moist, rocky, or grassland habitats at higher elevations. Flowers are tubular to campanulate and often white or pink, borne in whorls or racemes. The New Zealand contingent is notable for a number of endemic species, some of which carry conservation concerns: Ourisia modesta is classified as Threatened – Nationally Endangered under the New Zealand Threat Classification System, while several others are At Risk.
The genus was formally treated in a comprehensive 2006 monograph by H. M. Meudt (Systematic Botany Monographs 77), which remains the principal taxonomic reference. GBIF records approximately 50 taxa at species rank and below within the genus. The South American species, particularly Andean taxa such as Ourisia coccinea and Ourisia chamaedrifolia, have attracted interest in horticulture for their bright red or pink flowers, though most species are difficult to cultivate outside their native habitats.
Etymology
The genus name Ourisia honours Ouris, a governor of the Falkland Islands, as documented in H. M. Meudt's 2006 monograph on the genus. The epithet was applied when the genus was described from specimens collected in the Southern Hemisphere.
Distribution
Ourisia has a disjunct austral distribution spanning the Andes of South America, Tasmania, and New Zealand. In New Zealand, 15 species are recorded, many of them endemic, and they occur principally in montane to subalpine zones. South American species extend along the Andes from Colombia south to Tierra del Fuego.
Ecology
New Zealand species of Ourisia inhabit moist montane and subalpine environments, growing in grasslands, rocky outcrops, and streambanks at higher elevations. Several NZ taxa are considered difficult to establish outside their natural habitats and are not commercially available. The chromosome number 2n = 48 has been recorded for Ourisia macrocarpa.
Conservation
Several New Zealand species carry formal conservation assessments under the NZ Threat Classification System (2023 review). Ourisia modesta is classified as Threatened – Nationally Endangered. Ourisia confertifolia, Ourisia remotifolia, Ourisia spathulata, and Ourisia vulcanica are At Risk – Naturally Uncommon. Most other NZ species are Not Threatened. South American and Tasmanian species have not been assessed on the same system.
