Roadless Areas
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Stylocline masonii

Morefield

Mason's Neststraw

G1Critically Imperiled Found in 2 roadless areas NatureServe Explorer →
G1Critically ImperiledGlobal Rank
UnknownThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.153012
Element CodePDAST8Y080
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single state or province
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderAsterales
FamilyAsteraceae
GenusStylocline
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 Date2016-02-29
Change Date1993-07-07
Edition Date2003-06-17
Edition AuthorsK. Maybury
Threat ImpactUnknown
Rank Reasons
Stylocline masonii is known only from Monterey, San Luis Obispo, Kern, and Los Angeles counties, California. It was collected in 1991 for the first time since 1971; most of its sites were surveyed unsuccessfully in 1989, possibly due to poor rains that year. Many of the sites visited in 1989 showed "ample evidence of development or disturbance" (Morefield 1992). The most recent (1991) collection represented a range extension of 130 km from the nearest previously known site, so it is very possible that more surveys in good years will find additional populations in intervening regions.
Range Extent Comments
Known from from the southern San Joaquin Valley and adjacent mountains of Kern, Los Angeles, Monterey, and San Luis Obispo counties, California (FNA 2006a).
Ecology & Habitat

Habitat

Dry, open sandy places, including sandy washes, within Shadscale/Chenopod Scrub and Pinyon-Juniper Woodland communities. 100 - 400 (-1200) m.
Terrestrial Habitats
Forest/WoodlandWoodland - ConiferShrubland/chaparralDesert
Other Nations (1)
United StatesN1
ProvinceRankNative
CaliforniaS1Yes
Plant Characteristics
Economic Value (Genus)No
Roadless Areas (2)
California (2)
AreaForestAcres
Fish CanyonAngeles National Forest29,886
TuleAngeles National Forest9,861
References (8)
  1. CalFlora. 2005. Information on California plants for education, research and conservation. Berkeley, California: The CalFlora Database [web application]. Available: http://www.calflora.org/. (Accessed 2005)
  2. California Native Plant Society (CNPS). 2001. Inventory of Rare and Endangered Plants of California (sixth edition). Rare Plant Scientific Advisory Committee, David P. Tibor, Convening Editor. California Native Plant Society. Sacramento, CA. x + 388pp.
  3. Flora of North America Editorial Committee (FNA). 2006a. Flora of North America north of Mexico. Vol. 19. Magnoliophyta: Asteridae, part 6: Asteraceae, part 1. Oxford University Press, New York. xxiv + 579 pp.
  4. Hickman, J. C., ed. 1993. The Jepson manual: Higher plants of California. University of California Press, Berkeley, CA. 1400 pp.
  5. 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.
  6. Morefield, J.D. 1992. Three new species of Stylocline (Asteraceae:Inuleae) from California and the Mojave Desert. Madrono 39(2):114-130.
  7. Noteworthy collections. 1996. Madrono 43: 434-435.
  8. Skinner, M.W., and B.M. Pavlik, eds. 1997 (1994). Inventory of rare and endangered vascular plants of California. 1997 Electronic Inventory Update of 1994 5th edition, California Native Plant Society, Special Publication No. 1, Sacramento.