Asclepias rusbyi

(Vail) Woods.

Rusby's Milkweed

G4Apparently Secure (G4?) Found in 1 roadless area NatureServe Explorer →
G4Apparently SecureGlobal Rank
Identity
Unique IDELEMENT_GLOBAL.2.158863
Element CodePDASC021N0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderGentianales
FamilyApocynaceae
GenusAsclepias
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 Date1994-03-25
Change Date1994-07-16
Edition Date1994-07-17
Edition AuthorsStoner, N.; rev. C. Annable (1993), rev. L. Morse (1994).
Rank Reasons
Rare and scattered in Utah and Nevada. Also in New Mexico and Arizona. Ellen DeBruin ranks as 'G4?' (25Mar94).
Range Extent Comments
UT (Grand, San Juan, and Washington counties), NV (Clover Mts), AZ. Martin & Hutchins (1981) give its range as NE to CO, TX, NM (3 cos.) and AZ.
Ecology & Habitat

Habitat

Dry, open sites with Quercus, to pinyon-juniper and yellow pine stands; also found in sagebrush, oak brush, and mountain brush in Utah.
Other Nations (1)
United StatesNNR
ProvinceRankNative
ArizonaSNRYes
UtahS1Yes
ColoradoS2Yes
NevadaS1Yes
New MexicoSNRYes
Plant Characteristics
Economic Value (Genus)Yes
Roadless Areas (1)
Arizona (1)
AreaForestAcres
Sierra Ancha Wilderness ContiguousTonto National Forest7,787
References (4)
  1. Kartesz, J.T. 1988. A flora of Nevada. Ph.D. dissertation. Univ. of Nevada, Reno. 3 volumes. 1729 pp.
  2. 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.
  3. Martin, W.C., and C.R. Hutchins. 1980-1981. A flora of New Mexico. 2 vols. J. Cramer, in der A.R. Gantner Verlag, K.G., Vaduz, Liechtenstein. 2591 pp.
  4. Welsh, S.L., N.D. Atwood, L.C. Higgins, and S. Goodrich, eds. 1987. A Utah Flora. Great Basin Naturalist Memoir 9: 1- 894. Brigham Young University, Provo, Utah. 894 pp.