Cryptantha crinita - Greene
Silky Cryptantha
Taxonomic Status: Accepted
Related ITIS Name(s): Cryptantha crinita Greene (TSN 31769)
Unique Identifier: ELEMENT_GLOBAL.2.133549
Element Code: PDBOR0A0Q0
Informal Taxonomy: Plants, Vascular - Flowering Plants - Borage Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Lamiales Boraginaceae Cryptantha
Check this box to expand all report sections:
Concept Reference
Help
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: Cryptantha crinita
Conservation Status
Help

NatureServe Status

Global Status: G2
Global Status Last Reviewed: 31Oct2016
Global Status Last Changed: 15Dec2011
Ranking Methodology Used: Ranked by calculator
Rounded Global Status: G2 - Imperiled
Reasons: Endemic to California. Known only from Shasta and Tehama Counties. Long thought to be restricted to valley creekbed habitat, additional larger populations have been discovered in uplands with volcanic substrate. Threats include off-road vehicles, gravel mining, grazing, development, and exotic plants.
Nation: United States
National Status: N2

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 (S2)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: Known only from the northern Sacramento Valley and extreme eastern edge of the Cascade foothills in Shasta and Tehama Counties, California (Elliot and Mackey 2008).

Area of Occupancy: 26-125 4-km2 grid cells
Area of Occupancy Comments: Area of occupancy is approximately 45 4-sq km grid cells (CNDDB 2011).

Number of Occurrences: 21 - 80
Number of Occurrences Comments: There are a total of 46 occurrences, 30 of which were seen in the last 20 years (CNDDB 2011).

Population Size Comments: Population size value not recorded for this annual plant. Upland populations are estimated to number in the thousands of individuals on 100 to several hundred acres while lowland populations are estimated number in the hundreds of individuals on approximately 10 acres (Elliot and Mackey 2008).

Number of Occurrences with Good Viability/Integrity: Some (13-40)

Overall Threat Impact: High
Overall Threat Impact Comments: This species is threatened by off-road vehicles, gravel mining, development, roads, grazing, and non-native plants (CNPS 2011; CNDDB 2011). At least 40% of valley populations are threatened by residential development, gravel mining, cattle grazing, or recreation (Lis 1994 cited by Elliot and Mackey 2008). Upland populations may be particularly threatened by non-native plants. Several highly competitive exotic plants (Bromus madritensis ssp. rubens, Bromus tectorum, Centaurea solstitialis, and Taeniatherum caput-medusae) occur with Cryptantha crinita in upland habitats (Elliot and Mackey 2008).

Other NatureServe Conservation Status Information

Distribution
Help
Global Range: Known only from the northern Sacramento Valley and extreme eastern edge of the Cascade foothills in Shasta and Tehama Counties, California (Elliot and Mackey 2008).

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

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
CA Butte (06007), Glenn (06021), Shasta (06089), Tehama (06103)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
18 Cow Creek (18020151)+, Cottonwood Creek (18020152)+, Battle Creek (18020153)+, Clear Creek-Sacramento River (18020154)+, Paynes Creek-Sacramento River (18020155)+, Thomes Creek-Sacramento River (18020156)+, Big Chico Creek-Sacramento River (18020157)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
Help
Basic Description: Annual herb, 10-40 cm, white flowers.
Palustrine Habitat(s): FORESTED WETLAND, Riparian
Terrestrial Habitat(s): Bare rock/talus/scree, Forest - Conifer, Forest/Woodland, Grassland/herbaceous, Shrubland/chaparral, Woodland - Hardwood, Woodland - Mixed
Habitat Comments: Cryptantha crinita was long thought to be a species restricted to lowland creekbed habitats (Elliot and Mackey 2008). However, in recent years it has been found on uplands with volcanic substrate, particularly on Tuscan mudflow (Elliot and Mackey 2008). Both lowland and upland sites are characterized by sparse vegetative cover and few competing plants (Elliot and Mackey 2008). It is hypothesized that the species is actually primarily upland and that the lowland sites are the result of long-distance dispersal (Elliot and Mackey 2008). This hypothesis is supported by the following observations: upland populations have greater size and area, upland habitats are more stable and likely to persist, and downstream dispersal is known while upstream/upslope dispersal is unknown (Elliot and Mackey 2008). Habitats that support this species include gravelly streambanks, gravel bars, rocky volcanic soils, cismontane woodland, lower montane coniferous forest, riparian forest, riparian woodland, valley and foothill grassland, open gray pine and blue oak woodland, and montane chaparral (CNPS 2011; Baldwin et al. 2011; Elliot and Mackey 2008).
Economic Attributes Not yet assessed
Help
Management Summary
Help
Stewardship Overview: Survey potential habitat, particularly uplands, for new occurrences. Monitor known populations and assess whether they would benefit from control of non-native plants or efforts to reduce impacts from recreation and grazing.
Population/Occurrence Delineation Not yet assessed
Help
Population/Occurrence Viability
Help
U.S. Invasive Species Impact Rank (I-Rank) Not yet assessed
Help
Authors/Contributors
Help
NatureServe Conservation Status Factors Edition Date: 15Dec2011
NatureServe Conservation Status Factors Author: D. Gries, rev. A. Tomaino (2011)
Management Information Edition Date: 15Dec2011
Management Information Edition Author: Tomaino, A.

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
  • Baldwin, B.G., S. Boyd, D.J. Keil, R.W. Patterson, T.J. Rosatti and D.H. Wilken eds. 2011. Jepson Flora Project: Jepson Online Interchange for California Floristics. Regents of the University of California, Berkeley. Online. Available: http://ucjeps.berkeley.edu/interchange/ (accessed 2011).

  • California Department of Fish and Game. 2000. Natural Diversity Database (RareFind 2), Version 2.1.2, January 25, 2000. Downloaded in 2003.

  • 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.

  • California Native Plant Society (CNPS). 2011. Inventory of Rare and Endangered Plants. California Native Plant Society. Sacramento, CA. Online. Available: http://www.cnps.org/inventory (accessed 2011).

  • Elliott, B. A., and S. S. D. Mackey. 2008. Habitat and distribution of Cryptantha crinita Greene (Boraginaceae). Madrono 55(1): 76-80.

  • 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.

  • 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.

Use Guidelines & Citation

Use Guidelines and Citation

The Small Print: Trademark, Copyright, Citation Guidelines, Restrictions on Use, and Information Disclaimer.

Note: All species and ecological community data presented in NatureServe Explorer at http://explorer.natureserve.org were updated to be current with NatureServe's central databases as of March 2018.
Note: This report was printed on

Trademark Notice: "NatureServe", NatureServe Explorer, The NatureServe logo, and all other names of NatureServe programs referenced herein are trademarks of NatureServe. Any other product or company names mentioned herein are the trademarks of their respective owners.

Copyright Notice: Copyright © 2018 NatureServe, 4600 N. Fairfax Dr., 7th Floor, Arlington Virginia 22203, U.S.A. All Rights Reserved. Each document delivered from this server or web site may contain other proprietary notices and copyright information relating to that document. The following citation should be used in any published materials which reference the web site.

Citation for data on website including State Distribution, Watershed, and Reptile Range maps:
NatureServe. 2018. NatureServe Explorer: An online encyclopedia of life [web application]. Version 7.1. NatureServe, Arlington, Virginia. Available http://explorer.natureserve.org. (Accessed:

Citation for Bird Range Maps of North America:
Ridgely, R.S., T.F. Allnutt, T. Brooks, D.K. McNicol, D.W. Mehlman, B.E. Young, and J.R. Zook. 2003. Digital Distribution Maps of the Birds of the Western Hemisphere, version 1.0. NatureServe, Arlington, Virginia, USA.

Acknowledgement Statement for Bird Range Maps of North America:
"Data provided by NatureServe in collaboration with Robert Ridgely, James Zook, The Nature Conservancy - Migratory Bird Program, Conservation International - CABS, World Wildlife Fund - US, and Environment Canada - WILDSPACE."

Citation for Mammal Range Maps of North America:
Patterson, B.D., G. Ceballos, W. Sechrest, M.F. Tognelli, T. Brooks, L. Luna, P. Ortega, I. Salazar, and B.E. Young. 2003. Digital Distribution Maps of the Mammals of the Western Hemisphere, version 1.0. NatureServe, Arlington, Virginia, USA.

Acknowledgement Statement for Mammal Range Maps of North America:
"Data provided by NatureServe in collaboration with Bruce Patterson, Wes Sechrest, Marcelo Tognelli, Gerardo Ceballos, The Nature Conservancy-Migratory Bird Program, Conservation International-CABS, World Wildlife Fund-US, and Environment Canada-WILDSPACE."

Citation for Amphibian Range Maps of the Western Hemisphere:
IUCN, Conservation International, and NatureServe. 2004. Global Amphibian Assessment. IUCN, Conservation International, and NatureServe, Washington, DC and Arlington, Virginia, USA.

Acknowledgement Statement for Amphibian Range Maps of the Western Hemisphere:
"Data developed as part of the Global Amphibian Assessment and provided by IUCN-World Conservation Union, Conservation International and NatureServe."

NOTE: Full metadata for the Bird Range Maps of North America is available at:
http://www.natureserve.org/library/birdDistributionmapsmetadatav1.pdf.

Full metadata for the Mammal Range Maps of North America is available at:
http://www.natureserve.org/library/mammalsDistributionmetadatav1.pdf.

Restrictions on Use: Permission to use, copy and distribute documents delivered from this server is hereby granted under the following conditions:
  1. The above copyright notice must appear in all copies;
  2. Any use of the documents available from this server must be for informational purposes only and in no instance for commercial purposes;
  3. Some data may be downloaded to files and altered in format for analytical purposes, however the data should still be referenced using the citation above;
  4. No graphics available from this server can be used, copied or distributed separate from the accompanying text. Any rights not expressly granted herein are reserved by NatureServe. Nothing contained herein shall be construed as conferring by implication, estoppel, or otherwise any license or right under any trademark of NatureServe. No trademark owned by NatureServe may be used in advertising or promotion pertaining to the distribution of documents delivered from this server without specific advance permission from NatureServe. Except as expressly provided above, nothing contained herein shall be construed as conferring any license or right under any NatureServe copyright.
Information Warranty Disclaimer: All documents and related graphics provided by this server and any other documents which are referenced by or linked to this server are provided "as is" without warranty as to the currentness, completeness, or accuracy of any specific data. NatureServe hereby disclaims all warranties and conditions with regard to any documents provided by this server or any other documents which are referenced by or linked to this server, including but not limited to all implied warranties and conditions of merchantibility, fitness for a particular purpose, and non-infringement. NatureServe makes no representations about the suitability of the information delivered from this server or any other documents that are referenced to or linked to this server. In no event shall NatureServe be liable for any special, indirect, incidental, consequential damages, or for damages of any kind arising out of or in connection with the use or performance of information contained in any documents provided by this server or in any other documents which are referenced by or linked to this server, under any theory of liability used. NatureServe may update or make changes to the documents provided by this server at any time without notice; however, NatureServe makes no commitment to update the information contained herein. Since the data in the central databases are continually being updated, it is advisable to refresh data retrieved at least once a year after its receipt. The data provided is for planning, assessment, and informational purposes. Site specific projects or activities should be reviewed for potential environmental impacts with appropriate regulatory agencies. If ground-disturbing activities are proposed on a site, the appropriate state natural heritage program(s) or conservation data center can be contacted for a site-specific review of the project area (see Visit Local Programs).

Feedback Request: NatureServe encourages users to let us know of any errors or significant omissions that you find in the data through (see Contact Us). Your comments will be very valuable in improving the overall quality of our databases for the benefit of all users.