Taxon Details
Hibiscus lasiocarpos var. occidentalis
woolly rose-mallow
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© 2020 Steven Perry |
© 2012 Steven Perry |
© 2012 Steven Perry |
Taxon Summary:
Hibiscus lasiocarpos var. occidentalis, commonly known as woolly rose-mallow, is a perennial rhizomatous herb (emergent) in the Malvaceae that is found only in California. It occurs within Marshes and swamps, growing at elevations from 0 to 120 meters. Hibiscus lasiocarpos var. occidentalis is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.|
Scientific Name: Hibiscus lasiocarpos Cav. var. occidentalis (Torr.) A. Gray |
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Common Name: woolly rose-mallow |
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| Family: | Malvaceae | |
| Element Code: | PDMAL0H0R3 | |
| USDA Plants Symbol: | ||
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Synonyms/Other Names: |
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| Name Status: |
JEF, FNA, POWO, IPNI, Tropicos |
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| CA Rare Plant Rank: | 1B.2 |
| Fed List: | None |
| State List: | None |
| Global Rank: | G5T3 |
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State Rank: |
S3 |
| Other Status: | BLM_S; SB_CalBG/RSABG; SB_UCBG |
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CRPR Changes: |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2024-11-05 |
| Lifeform: perennial rhizomatous herb (emergent) | ||||||||||||||
Blooming Period: Jun-Sep
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Elevation:
0 - 120 meters 0 - 395 feet |
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General Habitats:
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| Microhabitat Details: Often in riprap on sides of levees. | ||||||||||||||
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Microhabitat:
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Notes: Most occurrences are very small. Seriously threatened by habitat disturbance, development, agriculture, recreational activites, and channelization of the Sacramento River and its tributaries. Also threatened by weed control measures and erosion. Possibly threatened by trail maintenance. See Madroño 56(2):104-111 for revised taxonomy. |
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Threats: |
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Taxonomy: |
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| Threat List Total: | 19 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 91 | 53 % |
| THREAT LIST: | ||
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| Waterway bank protection/maintenance | 36 | 20% |
| Recreational use (non-ORV) | 31 | 17% |
| Other | 25 | 14% |
| Agriculture | 19 | 10% |
| Erosion/runoff | 19 | 10% |
| Development | 17 | 9% |
| Biocides | 16 | 9% |
| Improper burning regime | 14 | 8% |
| Non-native plant impacts | 10 | 5% |
| Altered flood/tidal/hydrologic regime | 10 | 5% |
| Grazing | 6 | 3% |
| Road/trail construction/maint. | 6 | 3% |
| Mining | 3 | 1% |
| ORV activity | 1 | 0% |
| Surface water diversion | 1 | 0% |
| Wood cutting or brush clearing | 1 | 0% |
| Foot traffic/trampling | 1 | 0% |
| Dam/Inundation | 1 | 0% |
| Degraded water quality | 1 | 0% |
| Total Occurrences: | 173 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 0 | 78 | 38 | 16 | 1 | 40 |
| Occurrence Status: | |||||
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| Historical >20 Years | 82 | ||||
| Recent <=20 Years | 91 | ||||
| Presence: | |||||
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| Presumed Extant | 172 | ||||
| Possibly Extirpated | 0 | ||||
| Presumed Extirpated | 1 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) California (CA) |
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California Counties and Islands: Name (Code) Butte (BUT), Colusa (COL), Contra Costa (CCA), Glenn (GLE), Sacramento (SAC), San Joaquin (SJQ), Solano (SOL), Sutter (SUT), Yolo (YOL) |
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Quads: Name (Quad Code) Bouldin Island (3812115), Bruceville (3812134), Butte City (3912148), Clarksburg (3812145), Clifton Court Forebay (3712175), Courtland (3812135), Dozier (3812137), Florin (3812144), Gilsizer Slough (3912116), Grays Bend (3812166), Hamlin Canyon (3912166), Holt (3712184), Isleton (3812125), Jersey Island (3812116), Knights Landing (3812176), Liberty Island (3812136), Llano Seco (3912158), Logandale (3912242), Meridian (3912128), Nelson (3912157), Ord Ferry (3912168), Oroville (3912155), Paradise West (3912176), Pennington (3912137), Richardson Springs (3912177), Rio Vista (3812126), Sacramento West (3812155), Sanborn Slough (3912138), Shippee (3912156), Stockton West (3712183), Sutter Buttes (3912127), Sutter Causeway (3812186), Terminous (3812114), Thornton (3812124), Tisdale Weir (3912117), Verona (3812175), West of Biggs (3912147), Woodward Island (3712185) |
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Notes:
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Presumed Extant
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