Penstemon sudans - M.E. Jones
Susanville Beardtongue
Other Common Names: Susanville beardtongue
Taxonomic Status: Accepted
Related ITIS Name(s): Penstemon sudans M.E. Jones (TSN 504228)
Unique Identifier: ELEMENT_GLOBAL.2.135260
Element Code: PDSCR1L620
Informal Taxonomy: Plants, Vascular - Flowering Plants - Figwort Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Scrophulariales Scrophulariaceae Penstemon
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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: Penstemon sudans
Conservation Status
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NatureServe Status

Global Status: G3
Global Status Last Reviewed: 07May2009
Global Status Last Changed: 07May2009
Rounded Global Status: G3 - Vulnerable
Reasons: Known from approximately 35 presumed extant occurrences, mostly in Lassen County, northeastern California, with 2 occurrences in adjacent Washoe County, Nevada. Most occurrences are on Bureau of Land Management (BLM) lands. Total population size is believed to be at least 17,500 plants. Threatened by vehicles, and possibly also by logging and non-native plants.
Nation: United States
National Status: N3

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 California (S3), Nevada (S1)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: Known from Lassen County in northeastern California and Washoe County in adjacent northwestern Nevada.

Area of Occupancy: 126-2,500 4-km2 grid cells
Area of Occupancy Comments:  

Number of Occurrences: 21 - 80
Number of Occurrences Comments: Approximately 35 occurrences are believed extant, 33 in California and 2 in Nevada. An additional 3 occurrences are considered historical, all in California.

Population Size Comments: Total population size in California was estimated at 17,546 plants (R. Bittman pers. comm. 2009). Population size in Nevada unknown; described as "common" at one of the two Nevada sites in 1977.

Number of Occurrences with Good Viability/Integrity: Some (13-40)
Viability/Integrity Comments: Approximately 18 occurrences are believed to have good viability and 4 ot have excellent viability.

Overall Threat Impact: High
Overall Threat Impact Comments: Threatened by vehicles, and possibly also by logging and non-native plants (CNPS 2009).

Short-term Trend: Decline of 50-70%

Long-term Trend: Unknown

Other NatureServe Conservation Status Information

Distribution
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Global Range: Known from Lassen County in northeastern California and Washoe County in adjacent northwestern Nevada.

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 CA, NV

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
CA Lassen (06035), Modoc (06049), Plumas (06063), Sierra (06091)
NV Washoe (32031)*
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
16 Smoke Creek Desert (16040203)+
17 Guano (17120008)+*
18 Upper Pit (18020002)+, North Fork Feather (18020121)+, East Branch North Fork Feather (18020122)+, Middle Fork Feather (18020123)+, Surprise Valley (18080001)+*, Madeline Plains (18080002)+, Honey-Eagle Lakes (18080003)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: A robust perennial herb, up to 7 dm tall, with herbage and flowers that secrete a sticky-clammy substance. Flowers (June-July) are cream-colored with rose tinges and red-violet markings.
Terrestrial Habitat(s): Forest/Woodland, Shrubland/chaparral
Habitat Comments: Open, sagebrush- or woodland-dominated, rocky slopes on volcanic or other igneous substrates. 1200-1700 m elevation.
Economic Attributes Not yet assessed
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Management Summary Not yet assessed
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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: 18Jan1989
NatureServe Conservation Status Factors Author: Russo, Mary (TNC WRO), rev. K. Gravuer (2009)

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
  • Cronquist, A., A. H. Holmgren, N. H. Holmgren, J. L. Reveal, and P. K. Holmgren. 1984. Intermountain flora vol. 4. Subclass Asteridae (except Asteraceae). Bronx: The New York Botanical Garden. 573 pp.

  • Cronquist, A., A.H. Holmgren, N.H. Holmgren, J.L. Reveal, and P.K. Holmgren. 1984. Intermountain Flora: Vascular Plants of the Intermountain West, U.S.A. Vol. 4, Subclass Asteridae (except Asteraceae). New York Botanical Garden, Bronx. 573 pp.

  • Hickman, J. C., ed. 1993. The Jepson manual: Higher plants of California. University of California Press, Berkeley, CA. 1400 pp.

  • Jones, M. E. 1898. Contributions to western botany 8. Contributions to Western Botany 8: 1-43.

  • Kartesz, J.T. 1988. A flora of Nevada. Ph.D. dissertation. Univ. of Nevada, Reno. 3 volumes. 1729 pp.

  • 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.

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