Taxon Report
Castilleja lasiorhyncha (Gray) Chuang & HeckardSan Bernardino Mountains owl's-clover |
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Taxon Summary
Castilleja lasiorhyncha, commonly known as San Bernardino Mountains owl's-clover, is a annual herb (hemiparasitic) in the Orobanchaceae that is found only in California. It occurs within Chaparral, Meadows and seeps, Pebble (Pavement) plain, Riparian woodland, and Upper montane coniferous forest, growing at elevations from 1300 to 2390 meters. Castilleja lasiorhyncha is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.Classification
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Scientific Name: |
Castilleja lasiorhyncha (Gray) Chuang & Heckard |
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Common Name: |
San Bernardino Mountains owl's-clover |
| Family: | Orobanchaceae |
| Element Code: | PDSCR0D410 |
| USDA Plants Symbol: | CALA69 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | annual herb (hemiparasitic) |
| Blooming Period: May-Aug | May-Aug |
| Elevation: | 1300-2390 (4265-7840) |
| General Habitats: | Chaparral, Meadows and seeps, Pebble (Pavement) plain, Riparian woodland, Upper montane coniferous forest |
| Microhabitat: | Mesic |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G2? |
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State Rank: |
S2? |
| State List: | None |
| Fed List: | None |
| Other Status: | SB_CalBG/RSABG; USFS_S |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 46 |
| Element Occurrence Ranks: | |
| Excellent (A) | 2 |
| Good (B) | 9 |
| Fair (C) | 7 |
| Poor (D) | 4 |
| None (X) | 1 |
| Unknown (U) | 23 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Riverside (RIV)*, San Bernardino (SBD) | |
| Quads: Name (Quad Code) | |
| Big Bear City (3411637), Big Bear Lake (3411628), Butler Peak (3411731), Fawnskin (3411638), Forest Falls (3411618), Harrison Mtn. (3411722), Idyllwild (3311666)*, Keller Peak (3411721), Lake Arrowhead (3411732), Moonridge (3411627), San Bernardino North (3411723), San Jacinto Peak (3311676)*, Silverwood Lake (3411733) | |
Threat List Data from the CNDDB
| Threat List Total: | 12 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 27 | 59 % | |
| ORV activity | 12 | 26% |
| Development | 11 | 23% |
| Recreational use (non-ORV) | 10 | 21% |
| Foot traffic/trampling | 9 | 19% |
| Non-native plant impacts | 7 | 15% |
| Altered flood/tidal/hydrologic regime | 3 | 6% |
| Erosion/runoff | 2 | 4% |
| Grazing | 2 | 4% |
| Road/trail construction/maint. | 2 | 4% |
| Vandalism/dumping/litter | 1 | 2% |
| Logging | 1 | 2% |
| Mining | 1 | 2% |
Notes
| Threatened by development, mining, non-native plants, water diversions, grazing, fire suppression, vehicles, and recreational activities. See Proceedings of the American Academy of Arts and Sciences 12:82 (1876) for original description, and Systematic Botany 16(4):644-666 (1991) for revised nomenclature. |
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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 5 November 2025].