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Home/Species/ San Juan Tumble-mustard

Thelypodiopsis divaricata

(Rollins) Welsh & Reveal

San Juan Tumble-mustard

G3Vulnerable Found in 1 roadless area NatureServe Explorer →
G3VulnerableGlobal Rank
Identity
Unique IDELEMENT_GLOBAL.2.155720
Element CodePDBRA2M0A0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single state or province
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderCapparales
FamilyBrassicaceae
GenusThelypodiopsis
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 Date2009-02-05
Change Date1994-03-05
Edition Date1994-03-05
Edition AuthorsStoner, N., rev. L. Morse, rev. J. Beckman (3/96), rev. K. Gravuer (2009)
Range Extent20,000-200,000 square km (about 8000-80,000 square miles)
Number of Occurrences21 - 80
Rank Reasons
Endemic to the Utah Canyonlands; currently known from seven Utah counties. Known from at least 32 sites and 70 individual specimens; it appears that few or no targeted surveys have been conducted, and abundance is unknown. Known from desert shrub and pinyon-juniper communities on fine textured seleniferous substrates from 1220 to 2130 meters elevation.
Range Extent Comments
Endemic to the arid Utah Canyonlands in Carbon, Emery, Garfield, Grand, eastern Kane, San Juan, and Wayne counties, Utah (Homgren et al. 2005, Welsh et al. 2008). Known range extent appears to be approximately 30,000-40,000 square km.
Occurrences Comments
Occurrences have not be mapped for this species. Albee et al. (1988) show 32 sites. Since 1988, another four specimens have been added to the NYBG herbarium. Welsh et al. (2008) report 70 specimens at the BYU herbarium, although some of these may be duplicate collections from the same occurrence. It does not appear that field surveys have been conducted for this species specifically, so it may be undercollected.
Ecology & Habitat

Diagnostic Characteristics

Welsh et al. (2008) note that "the tall, typically branched stems persist for a while, standing ghost-like above the barren substrates of southeastern Utah."

Habitat

Welsh et al. (2008) describe the species as occurring on "fine textured seleniferous substrates of Mancos Shale, Mesa Verde Group, Tropic Shale, Dakota Morrison, Chinle, and Moenkopi formations." Settings include rocky knolls, barren hills, and alkali flats. Occurs in desert shrubland (shadscale, blackbrush, sagebrush) and pinyon-juniper communities. 1220-2130 m.
Terrestrial Habitats
Forest/WoodlandWoodland - ConiferDesert
Other Nations (1)
United StatesN3
ProvinceRankNative
UtahS3Yes
Plant Characteristics
Economic Value (Genus)No
Roadless Areas (1)
Utah (1)
AreaForestAcres
Wayne WonderlandFishlake National Forest12,395
References (6)
  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. Flora of North America Editorial Committee (FNA). 2010. Flora of North America north of Mexico. Vol. 7. Magnoliophyta: Salicaceae to Brassicaceae. Oxford University Press, New York. xxii + 797 pp.
  3. Holmgren, N.H., P.K. Holmgren, and A. Cronquist. 2005. Intermountain flora. Volume 2, part B. Subclass Dilleniidae. The New York Botanical Garden Press. 488 pages.
  4. 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.
  5. Rollins, R.C. 1993a. The Cruciferae of continental North America: Systematics of the mustard family from the Arctic to Panama. Stanford Univ. Press, Stanford, California. 976 pp.
  6. Welsh, S.L., N.D. Atwood, S. Goodrich and L.C. Higgins. (Eds.) 2008. A Utah Flora. 4th edition, revised. Brigham Young University, Provo, Utah, U.S.A. 1019 pp.