Taxon Report
Pleuropogon hooverianus (L. Benson) J.T. HowellNorth Coast semaphore grass |
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Classification
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Scientific Name: |
Pleuropogon hooverianus (L. Benson) J.T. Howell |
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Common Name: |
North Coast semaphore grass |
| Family: | Poaceae |
| Element Code: | PMPOA4Y070 |
| USDA Plants Symbol: | PLHO2 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial rhizomatous herb |
| Blooming Period: Apr-Jun | Apr-Jun |
| Elevation: | 10-671 (35-2200) |
| General Habitats: | Broadleafed upland forest, Meadows and seeps, North Coast coniferous forest |
| Microhabitat: | Mesic, Openings |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.1 |
| Global Rank: | G2 |
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State Rank: |
S2 |
| State List: | CT |
| Fed List: | None |
| Other Status: | BLM_S; SB_BerrySB; SB_CalBG/RSABG |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 34 |
| Element Occurrence Ranks: | |
| Excellent (A) | 3 |
| Good (B) | 14 |
| Fair (C) | 5 |
| Poor (D) | 2 |
| None (X) | 2 |
| Unknown (U) | 8 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Humboldt (HUM), Marin (MRN), Mendocino (MEN), Sonoma (SON) | |
| Quads: Name (Quad Code) | |
| Bolinas (3712286), Cahto Peak (3912365), Camp Meeker (3812248), Comptche (3912335), Cotati (3812236), Elledge Peak (3912312), Garberville (4012317), Longvale (3912354), Navarro (3912325), Orrs Springs (3912323), Petaluma (3812226), Philo (3912314), San Geronimo (3812216), San Quentin (3712284), San Rafael (3712285), Two Rock (3812237), Willits (3912343) | |
Threat List Data from the CNDDB
| Threat List Total: | 16 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 22 | 65 % | |
| Non-native plant impacts | 13 | 38% |
| Road/trail construction/maint. | 10 | 29% |
| Logging | 7 | 20% |
| Other | 5 | 14% |
| Grazing | 5 | 14% |
| Erosion/runoff | 3 | 8% |
| Agriculture | 3 | 8% |
| Biocides | 3 | 8% |
| Feral pigs | 2 | 5% |
| Foot traffic/trampling | 2 | 5% |
| Insufficient population/stand size | 1 | 2% |
| Dam/Inundation | 1 | 2% |
| Development | 1 | 2% |
| Altered flood/tidal/hydrologic regime | 1 | 2% |
| Recreational use (non-ORV) | 1 | 2% |
| ORV activity | 1 | 2% |
Notes
| Threatened by roadside maintenance, development, timber harvest, feral pigs, and non-native plants. See American Journal of Botany 28:360 (1941) for original description, Leaflets of Western Botany 4(10):247 (1946) for revised nomenclature, and Taxon 27(4):375 (1978) for alternate 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 7 January 2025].