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Rivulariella gemmipara

(A. Evans) D.H. Wagner

a liverwort

G2Imperiled Found in 1 roadless area NatureServe Explorer →
G2ImperiledGlobal Rank
High - mediumThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.126179
Element CodeNBHEP0U010
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryNonvascular Plant
KingdomPlantae
PhylumHepatophyta
ClassJungermanniopsida
OrderJungermanniales
FamilyScapaniaceae
GenusRivulariella
Synonyms
Chiloscyphus gemmiparusA. Evans
Concept Reference
Stotler, R. and B. Crandall-Stotler. 1977. A checklist of the liverworts and hornworts of North America. The Bryologist 80(3): 405-428.
Taxonomic Comments
Originally described in the genus Chiloscyphus. Stotler and Crandall-Stotler (2017) and Wagner (2013) transfer Chiloscyphus gemmiparus to Rivulariella gemmipara ; these represent the same concept for the element.
Conservation Status
Rank MethodExpertise without calculation
Review Date2015-09-18
Change Date2015-09-18
Edition Date1998-09-17
Edition AuthorsGRIES, D., rev. A. Tomaino (2010)
Threat ImpactHigh - medium
Number of Occurrences1 - 5
Rank Reasons
Known from only 5 or 6 localities in the world: three in Oregon, one in Alaska, one in Utah, and one reported from California. Rare but may be undercollected. Long term habitat stability is a likely important factor. Threats include logging, road and trail construction, water pollution, and motorized boating.
Range Extent Comments
Western North America (Schuster 1980). Identified in Oregon, Alaska, California and Utah (Christy and Wagner 2007).
Occurrences Comments
Known from three localities in Oregon, one in Alaska and one in Utah (Christy and Wagner 2007). In addition, there is one unverified locality in California (Christy and Wagner 2007).
Threat Impact Comments
Threatened by logging, road and trail construction, water pollution, and motorized boating (Christy and Wagner 2007). Oregon occurrences are less threatened because of their location at higher elevations in or near designated wilderness areas (Christy and Wagner 2007).
Ecology & Habitat

Habitat

Occurs on rocks in beds of cold montane streams, submerged or emergent in the splash zone, in full shade to partial sun (Christy and Wagner 2007).
Other Nations (1)
United StatesN2
ProvinceRankNative
CaliforniaSNRYes
OregonS2Yes
UtahSNRYes
AlaskaSNRYes
Plant Characteristics
Economic Value (Genus)No
Roadless Areas (1)
Oregon (1)
AreaForestAcres
Mt. ThielsenWinema National Forest1,153
References (6)
  1. Christy, J.A. and D.H. Wagner. 1996. Guide for the identification of rare, threatened or sensitive bryophytes in the range of the northern spotted owl, western Washington, western Oregon, and northwestern California. USDI Bureau of Land Management. 200 pp.
  2. Christy, J. A., and D. H. Wagner. 2007 last update. Species Fact Sheet: <i>Chiloscyphus gemmiparus</i>. Interagency Special Status/Sensitive Species Program (ISSSSP) Conservation Planning Documents, U.S. Forest Service (Pacific Northwest Regional Office) and Bureau of Land Management (Oregon/Washington State Office). Online. Available: http://www.fs.fed.us/r6/sfpnw/issssp/planning-documents/species-guides.shtml (accessed 2010).
  3. Schuster, R. M. 1980. The Hepaticae and Anthocerotae of North America east of the hundredth meridian, volume IV. Columbia University Press, New York. 1334 pp.
  4. Stotler, R. and B. Crandall-Stotler. 1977. A checklist of the liverworts and hornworts of North America. The Bryologist 80(3): 405-428.
  5. Stotler, R.E. and B. Crandall-Stotler. 2017. A synopsis of the liverwort flora of North America north of Mexico. Ann. Missouri Bot. Gard. 102: 574-709.
  6. Wagner, D.H. 2013. <i>Rivulariella</i>, gen. nov. (Jungermanniaceae), endemic to western North America. Phytoneuron 10: 1–9.