Xylorhiza confertifolia

(Cronq.) T.J. Wats.

Henrieville Woody-aster

G2Imperiled (G2G3) Found in 1 roadless area NatureServe Explorer →
G2ImperiledGlobal Rank
Identity
Unique IDELEMENT_GLOBAL.2.149502
Element CodePDASTA1020
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single state or province
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderAsterales
FamilyAsteraceae
GenusXylorhiza
Synonyms
Machaeranthera glabriuscula var. confertifoliaCronq.
Concept Reference
Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Conservation Status
Review Date2004-04-23
Change Date1999-01-21
Edition Date1996-12-05
Edition AuthorsFranklin, B.
Rank Reasons
Known from 3 adjacent southcentral Utah counties (Garfield, Kane, and Wayne). According to Cronquist (1994), "a narrowly limited endemic, locally abundant in the proper habitat."
Range Extent Comments
Cronquist (1994) cited the distribution as "[b]arren (often gray) alkaline clay slopes in the pinyon-juniper zone ...; Garfield and Kane cos., Utah, notably in the drainage of the Paria and Escalante rivers.... [A] narrowly limited endemic, locally abundant in the proper habitat." Wayne Co. record according to Welsh et al. (1993), which also noted that the plants are found mainly on the Kaiparowits, Morrison, and Moenkopi formations.
Threat Impact Comments
This taxon occurs in the southern Utah Redrock canyon country- a habitat that can be significantly affected by off-road vehicles and questionable road construction. Land in this area is in mixed ownership, including significant tracts of federal lands (although none report the presence of this taxon). In addition, this species grows near archealogical sites, and may recieve some protection as a byproduct of cultural protection. Erosion is a threat to the surface soils throughout this region.
Ecology & Habitat

Habitat

Pinyon-juniper communities on barren, often alkaline, clay soils of the Kaiparowits, Morrison, and Moenkopi formations at 1400-2200 m elevation.
Terrestrial Habitats
Forest/WoodlandWoodland - ConiferBarrens
Other Nations (1)
United StatesN2
ProvinceRankNative
UtahS3Yes
Plant Characteristics
Economic Value (Genus)No
Roadless Areas (1)
Utah (1)
AreaForestAcres
South RimDixie National Forest1,372
References (5)
  1. Albee, B.J., L.M. Shultz, and S. Goodrich. 1988. Atlas of the vascular plants of Utah. Utah Museum Natural History Occasional Publication 7, Salt Lake City, Utah. 670 pp.
  2. Cronquist, A., A. H. Holmgren, N. H. Holmgren, J. L. Reveal, and P. K. Holmgren. 1994. Intermountain flora: Vascular plants of the Intermountain West, U.S.A., Volume 5. The New York Botanical Garden, Bronx, NY.
  3. Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
  4. Stone, R.D. 1998. Endemic and rare plants of Utah: an overview of their distribution and status. Prepared for: Utah Reclamation Mitigation and Conservation Commission, U.S. Department of the Interior by Utah Division of Wildlife Resources. 566 pp. + appendices. [https://dwrcdc.nr.utah.gov/ucdc/ViewReports/plantrpt.htm]
  5. Welsh, S.L., N.D. Atwood, S. Goodrich, and L.C. Higgins (eds.) 1993. A Utah flora. 2nd edition. Brigham Young Univ., Provo, Utah. 986 pp.