Taxon Report
Chloropyron palmatum (Ferris) Tank & J.M Eggerpalmate-bracted bird's-beak |
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Taxon Summary
Chloropyron palmatum, commonly known as palmate-bracted bird's-beak, is a annual herb (hemiparasitic) in the Orobanchaceae that is found only in California. It occurs within Chenopod scrub, and Valley and foothill grassland, growing at elevations from 5 to 155 meters. Chloropyron palmatum is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.Classification
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Scientific Name: |
Chloropyron palmatum (Ferris) Tank & J.M Egger |
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Common Name: |
palmate-bracted bird's-beak |
| Family: | Orobanchaceae |
| Element Code: | PDSCR0J0J0 |
| USDA Plants Symbol: | |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | annual herb (hemiparasitic) |
| Blooming Period: May-Oct | May-Oct |
| Elevation: | 5-155 (15-510) |
| General Habitats: | Chenopod scrub, Valley and foothill grassland |
| Microhabitat: | Alkaline |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.1 |
| Global Rank: | G1 |
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State Rank: |
S1 |
| State List: | CE |
| Fed List: | FE |
| Other Status: | SB_CalBG/RSABG |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 25 |
| Element Occurrence Ranks: | |
| Excellent (A) | 1 |
| Good (B) | 11 |
| Fair (C) | 3 |
| Poor (D) | 1 |
| None (X) | 8 |
| Unknown (U) | 1 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Alameda (ALA), Colusa (COL), Fresno (FRE), Glenn (GLE), Madera (MAD), San Joaquin (SJQ)*, Yolo (YOL) | |
| Quads: Name (Quad Code) | |
| Altamont (3712166), Arbuckle (3912211), Colusa (3912221), Dunnigan (3812188), Firebaugh NE (3612083)*, Grays Bend (3812166), Grimes (3912118), Kerman (3612061)*, Livermore (3712167), Logandale (3912242), Moulton Weir (3912231), Poso Farm (3612084), Stockton West (3712183)*, Tranquillity (3612063), Wildwood School (3812281) | |
Threat List Data from the CNDDB
| Threat List Total: | 13 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 15 | 60 % | |
| Grazing | 7 | 28% |
| Non-native plant impacts | 6 | 24% |
| Agriculture | 6 | 24% |
| Disking | 6 | 24% |
| ORV activity | 4 | 16% |
| Development | 3 | 12% |
| Road/trail construction/maint. | 2 | 8% |
| Vandalism/dumping/litter | 2 | 8% |
| Foot traffic/trampling | 2 | 8% |
| Altered flood/tidal/hydrologic regime | 2 | 8% |
| Biocides | 2 | 8% |
| Other | 1 | 4% |
| Improper burning regime | 1 | 4% |
Notes
| Plants in GLE Co. are introduced (562B). Threatened by agriculture, urbanization, vehicles, altered hydrology, grazing, and development. Conservation research ongoing. See Bulletin of the Torrey Botanical Club 45:399-423 (1918) for original description, Fremontia 17(1):20-23 (1989) for information on Springtown Alkali Sink occurrence (ALA Co.), and Environmental Management 17:115-127 (1993) for population biology. |
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Threats: |
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Taxonomy: |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 21 November 2025].