Cham.
Identity
Unique IDELEMENT_GLOBAL.2.128058
Element CodePDHYD0E040
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single state or province
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderSolanales
FamilyHydrophyllaceae
GenusRomanzoffia
Concept ReferenceKartesz, J.T. 1999. A synonymized checklist and atlas with biological attributes for the vascular flora of the United States, Canada, and Greenland. First edition. In: Kartesz, J.T., and C.A. Meacham. Synthesis of the North American Flora, Version 1.0. North Carolina Botanical Garden, Chapel Hill, N.C.
Taxonomic CommentsThis small genus of four species is apparently endemic to western North America; reports from east Asia are based on an unconfirmed collection of R. UNALASCHCENSIS generally regarded as incorrect (Hulten 1941-50). Recognized as a distinct species by Kartesz, 1994 checklist. Spelling in Kartesz (1999) changed to 'unalaschcensis' (from 'unalaschensis' of kartesz, 1994).
Conservation Status
Rank MethodLegacy Rank calculation - Excel v3.1x
Review Date2018-08-01
Change Date2018-08-01
Edition Date2018-08-01
Edition AuthorsLipkin, R., rev. Treher (2018)
Threat ImpactUnknown
Range Extent200,000-2,500,000 square km (about 80,000-1,000,000 square miles)
Number of Occurrences21 - 80
Rank ReasonsRomanzoffia unalaschcensis is endemic to Alaska from the Aleutian Islands east to Hecata Island. Although there are currently less than 40 separate locations known with certainty, others are believed likely. The species is easily mistaken for a saxifrage such as S. bracteata, and the area it occurs in is poorly known botanically.
Range Extent CommentsRomanzoffia unalaschcensis is endemic to Alaska and found from Unalaska Island, the eastern Aleutians, Alaska Peninsula, Kodiak Island and scattered locations east to Heceta Island. Reports from east Asia are apparently based on a collection from the Taui River in Magadan, Soviet Union, are now regarded as incorrect (Hulten 1937). Reports from St. Paul, St. George, St. Michael, the Mt. St. Elias region, and Vancouver Island are also unconfirmed and are considered unlikely by Hulten (1937, 1941).
Occurrences CommentsThere are at least 34 reported occurrences. The range of this species is spread over a large and poorly explored area. The species is easily mistaken for a Saxifrage, and thus likely to be overlooked.