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Nemacladus twisselmannii

J.T. Howell

Twisselmann's Nemacladus

G1Critically Imperiled Found in 2 roadless areas NatureServe Explorer →
G1Critically ImperiledGlobal Rank
LowThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.136844
Element CodePDCAM0F0D0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single state or province
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderCampanulales
FamilyCampanulaceae
GenusNemacladus
Other Common Names
Twisselmann's Threadplant (EN)
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 Date2016-02-02
Change Date1986-10-22
Edition Date2005-11-01
Edition AuthorsD. Gries, rev. R. Bittman 2005
Threat ImpactLow
Range Extent<100-250 square km (less than about 40-100 square miles)
Number of Occurrences1 - 5
Rank Reasons
Endemic to California, Nemacladus twisselmannii is known from two extant occurrences in Kern and Tulare Counties. There are no current threats due to their presence in remote and Wilderness areas. The populations are both fairly small with only a total of about 400 plants covering less than 10 total acres.
Range Extent Comments
Nemacladus twisselmannii is only known from Kern and Tulare counties, California. The estimated range extent is about 54 sq mi.
Occurrences Comments
Only 2 occurrences known, both thought to be extant.
Threat Impact Comments
No threats anticipated since one site is in a Wilderness Area, Sequoia NF, and the other is in an area with little visitation in the Sequoia NF.
Ecology & Habitat

Habitat

On slopes, in sandy or rocky granitic substrates, within coniferous forest communties (Yellow Pine Forest, Lodgepole Forest, and Red Fir Forest). 2240 - 2450 m.
Terrestrial Habitats
Forest/WoodlandForest - Conifer
Other Nations (1)
United StatesN1
ProvinceRankNative
CaliforniaSNRYes
Plant Characteristics
Economic Value (Genus)No
Roadless Areas (2)
California (2)
AreaForestAcres
ChannellSequoia National Forest45,429
Domeland Add.Sequoia National Forest3,046
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. Hickman, J. C., ed. 1993. The Jepson manual: Higher plants of California. University of California Press, Berkeley, CA. 1400 pp.
  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. Munz, P.A., with D.D. Keck. 1959. A California flora. Univ. California Press, Berkeley. 1681 pp.
  6. Pearson, D.C. 1989. Endangered species alert program manual: Species accounts and procedures. Southern California Edison Environmental Affairs Division.
  7. 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.
  8. Twisselmann, E.C. 1967. A flora of Kern County, California. California Native Plant Society, Sacramento. 395 pp.