Taxon Report
Cordylanthus tenuis Gray ssp. pallescens (Penn.) Chuang & Heckardpallid bird's-beak |
 ©2018 Sierra Pacific Industries |
Classification
|
Scientific Name: |
Cordylanthus tenuis Gray ssp. pallescens (Penn.) Chuang & Heckard |
|
Common Name: |
pallid bird's-beak |
| Family: | Orobanchaceae |
| Element Code: | PDSCR0J0S3 |
| USDA Plants Symbol: | COTEP2 |
|
Synonyms/Other Names: |
|
Ecology and Life History
| Lifeform: | annual herb (hemiparasitic) |
| Blooming Period: Jul-Sep | Jul-Sep |
| Elevation: | 695-1645 (2280-5395) |
| General Habitats: | Lower montane coniferous forest |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G4G5T1 |
|
State Rank: |
S1 |
| State List: | None |
| Fed List: | None |
| Other Status: | BLM_S; SB_CalBG/RSABG; SB_UCSC; USFS_S |
|
CRPR Changes: |
|
Occurrence Data from the CNDDB
| Total Occurrences: | 18 |
| Element Occurrence Ranks: | |
| Excellent (A) | 2 |
| Good (B) | 4 |
| Fair (C) | 6 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 6 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Siskiyou (SIS) | |
| Quads: Name (Quad Code) | |
| City of Mount Shasta (4112233), Hotlum (4112243), Mt. Shasta (4112242), Weed (4112244) | |
Threat List Data from the CNDDB
| Threat List Total: | 10 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 9 | 50 % | |
| Road/trail construction/maint. | 8 | 44% |
| Biocides | 7 | 38% |
| Logging | 6 | 33% |
| Development | 3 | 16% |
| Foot traffic/trampling | 3 | 16% |
| Other | 2 | 11% |
| Recreational use (non-ORV) | 1 | 5% |
| ORV activity | 1 | 5% |
| Grazing | 1 | 5% |
| Vandalism/dumping/litter | 1 | 5% |
Notes
|
Threatened by development and road maintenance. Intergrades with ssp. tenuis and ssp. viscidus; core populations of ssp. pallescens should be prioritized for conservation. See Proceedings of the Academy of Natural Sciences of Philadelphia 99(7):197-198 (1947) for original description, Systematic Botany Monographs |
|
Threats: |
|
Taxonomy: |
Selected References
| USFS Potential Species of Conservation Concern Profile |
Citation
California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 25 December 2024].