Linum westii - Rogers
West's Flax
Other Common Names: West's flax
Taxonomic Status: Accepted
Related ITIS Name(s): Linum westii Rogers (TSN 29228)
Unique Identifier: ELEMENT_GLOBAL.2.152145
Element Code: PDLIN02100
Informal Taxonomy: Plants, Vascular - Flowering Plants - Flax Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Linales Linaceae Linum
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Concept Reference
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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.
Concept Reference Code: B94KAR01HQUS
Name Used in Concept Reference: Linum westii
Taxonomic Comments: Hard to distinguish in the field; one of the yellow flowered Linum species.
Conservation Status
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NatureServe Status

Global Status: G1
Global Status Last Reviewed: 25Jun2015
Global Status Last Changed: 25Jun2015
Ranking Methodology Used: Ranked by calculator
Rounded Global Status: G1 - Critically Imperiled
Reasons: Linum westii is endemic to the Florida panhandle and northeast Florida with few known occurrences in natural habitats. It is difficult to identify and flowers in the evening and therefore may be underreported. The Florida Natural Areas Inventory database currently contains 20 extant occurrence records. Threats include intensive forestry practices, fire suppression, and drainage alteration.
Nation: United States
National Status: N1

U.S. & Canada State/Province Status
Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
United States Florida (S1)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: Restricted to north Florida. Extant populations are known in Liberty, Franklin, Gulf, Okaloosa, and Clay counties. Historically also collected in Baker and Jackson counties. One specimen is labeled as from north Georgia, but this has been discounted as a label error, since there is no suitable habitat in that area (Rogers 1963).

Area of Occupancy: 1-25 4-km2 grid cells
Area of Occupancy Comments:  

Number of Occurrences: 6 - 20
Number of Occurrences Comments: 20 extant occurrences (using standard 1 km separation distance) confirmed at least since 1988. In addition there are 3 historical occurrences, 1 from 1946 and 2 from 1960's, which were not confirmed in 2013 visits.

Population Size Comments: 300-400 plants. Possibly underreported because of temporal blooming at dusk and difficulty of distinguishing it from other yellow-flowered Linums in its range.

Number of Occurrences with Good Viability/Integrity: Very few (1-3)
Viability/Integrity Comments: 4 occurrences on managed areas had 50 to over 100 plants; plants were not found at 2 of these in 2013, but plants were not found at any of the 14 known sites visited in 2013, so this may possibly have been a bad year for the species.

Overall Threat Impact: High
Overall Threat Impact Comments: Timber production practices such as fire suppression and high planting densities, drainage, and mechanical site preparation disrupt the hydrology of this species' habitat.

Short-term Trend: Decline of 10-30%
Short-term Trend Comments: Three populations in roadside ditches have not been confirmed in subsequent visits probably due to changes in roadside management; four populations from swamp edges that could not be found in later surveys may have been affected by the drying effect of intensive forestry practices.

Long-term Trend: Decline of 10-50%

Intrinsic Vulnerability Comments: Probably maintained through occasional fires which kill Hypericum chapmanii and other shrubs. Sensitive to modifications of hydrology of swamp edges.

Environmental Specificity Comments: Found in wet prairies, marsh borders, and shallow water of firm, sandy-bottomed, sparsely vegetated borders of cypress-gum-myrtle holly swamps. In open sun. Also occurs in ditches.

Other NatureServe Conservation Status Information

Distribution
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Global Range: Restricted to north Florida. Extant populations are known in Liberty, Franklin, Gulf, Okaloosa, and Clay counties. Historically also collected in Baker and Jackson counties. One specimen is labeled as from north Georgia, but this has been discounted as a label error, since there is no suitable habitat in that area (Rogers 1963).

U.S. States and Canadian Provinces

Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
Color legend for Distribution Map

U.S. & Canada State/Province Distribution
United States FL

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
FL Baker (12003)*, Bradford (12007)*, Calhoun (12013)*, Clay (12019), Franklin (12037), Gulf (12045), Jackson (12063)*, Liberty (12077), Okaloosa (12091), Union (12125)*
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
03 St. Marys (03070204)+*, Lower St. Johns (03080103)+, Santa Fe (03110206)+*, Apalachicola (03130011)+, Chipola (03130012)+, New (03130013)+, Apalachicola Bay (03130014)+, St. Andrew-St. Joseph Bays (03140101)+, Pensacola Bay (03140105)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: A perennial herb with 1 or a few unbranched stems, growing 4-6 dm tall. Leaves are opposite on the lower half of the stem and alternate above. The inflorescence is a terminal cluster made up of several spreading-ascending, few-flowered branches. Petals, 5, are pale to bright yellow and are 6 mm long (Ward 1979).
Palustrine Habitat(s): Bog/fen, FORESTED WETLAND, HERBACEOUS WETLAND
Terrestrial Habitat(s): Forest/Woodland, Woodland - Mixed
Habitat Comments: Shallow pond margins in slash pine-saw palmetto flatwoods, bogs, cypress pond margins, and ditches. Depression marshes, dome swamps, wet flatwoods, and wet prairies.
Economic Attributes Not yet assessed
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Management Summary
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Stewardship Overview: This rare plant is at risk. Burn flatwoods and associated wetlands every 2 - 3 years. Avoid placing roads and firebreaks in wetland ecotones. Protect natural hydrology of flatwoods (Chafin 2000).
Population/Occurrence Delineation Not yet assessed
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Population/Occurrence Viability
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U.S. Invasive Species Impact Rank (I-Rank) Not yet assessed
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Authors/Contributors
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NatureServe Conservation Status Factors Edition Date: 19Sep2013
NatureServe Conservation Status Factors Author: Hardin, E.D., rev. D.L. White (1991), rev. C.Nordman (2012), rev. A.F. Johnson (2013)
Management Information Edition Date: 29Mar2012
Management Information Edition Author: Nordman, C.
Element Ecology & Life History Edition Date: 01Aug1995

Botanical data developed by NatureServe and its network of natural heritage programs (see Local Programs), The North Carolina Botanical Garden, and other contributors and cooperators (see Sources).

References
Help
  • CLEWELL, ANDRE F. 1985. GUIDE TO THE VASCULAR PLANTS OF THE FLORIDA PANHANDLE. UNIV. PRESSES OF FLORIDA, GAINESVILLE, FL. 605 PP.

  • Chafin, L. G. 2000. Field guide to the rare plants of Florida. Florida Natural Areas Inventory, Tallahassee. [http://www.fnai.org/FieldGuide/]

  • Clewell, A.F. 1985. Guide to vascular plants of the Florida panhandle. Florida State Univ. Press, Tallahassee, Florida. 605 pp.

  • Flora of North America Editorial Committee. 2016. Flora of North America North of Mexico. Vol. 12. Magnoliophyta: Vitaceae to Garryaceae. Oxford Univ. Press, New York. xxiv + 603 pp.

  • KRAL, R. 1983.A REPORT ON SOME RARE,THREATENED,OR ENDANGEREDFOREST-RELATED VASCULAR PLANTS OF THE SOUTH.VOL I ISOETACEAETHROUGH EUPHORBIACEAE;VOL II AQUIFOLIACEA THROUGH ASTERACEAE& GLOSSARY.USDA FOREST SERV,SE REG.,ATL,GA. TECH PUBL R8-TP2

  • 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.

  • Kral, R. 1983c. A report on some rare, threatened, or endangered forest-related vascular plants of the South. U.S. Dept. of Agriculture Forest Service Technical Publication R8-TP2, Athens, GA. 1305 pp.

  • RADFORD, A., H. AHLES AND C. BELL. 1968 MANUAL OF THE VASCULAR FLORA OF THE CAROLINAS. THE UNIVERSITY OF NORTH CAROLINA PRESS CHAPEL HILL. 1183 PP + LXI.

  • Radford, A.E., H.E. Ahles, and C.R. Bell. 1968. Manual of the vascular flora of the Carolinas. Univ. North Carolina Press, Chapel Hill, NC. 1183 pp.

  • Rogers, C.M. 1963. Yellow flowered species of Linum in eastern North America. Brittonia 15:97-122.

  • Rogers, C.M. 1963. Yellow flowered species of Linum in eastern North Anerica. Brittonia 15: 97-122.

  • WARD, D.B. (ED). 1979. RARE AND ENDANGERED BIOTA OF FLORIDA, VOLUME 5: PLANTS. UNIVERSITY PRESSES OF FLORIDA, GAINESVILLE.

  • WUNDERLIN, RICHARD P. 1982. GUIDE TO THE VASCULAR PLANTS OF CENTRAL FLORIDA. UNIV. PRESSES OF FLA., TAMPA, ST. PETERSBURG, FT. MEYERS, SARASOTA

  • Ward, D.B., ed. 1979. Rare and endangered biota of Florida. Vol. 5: Plants. Univ. Presses of Florida, Gainesville.

  • Wunderlin, R.P. 1982. Guide to the vascular plants of central Florida. Univ. Presses Florida, Gainesville. 472 pp.

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