Taxon Details
Myosurus minimus ssp. apus
little mousetail
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Taxon Summary:
Myosurus minimus ssp. apus, commonly known as little mousetail, is a annual herb in the Ranunculaceae that is found in California and elsewhere. It occurs within Valley and foothill grassland, and Vernal pools (alkaline), growing at elevations from 20 to 640 meters. Myosurus minimus ssp. apus is ranked 3.1, Plants About Which We Need More Information, A Review List; Seriously threatened in California.|
Scientific Name: Myosurus minimus L. ssp. apus (Greene) G.R. Campbell |
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Common Name: little mousetail |
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| Family: | Ranunculaceae | |
| Element Code: | PDRAN0H031 | |
| 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: | 3.1 |
| Fed List: | None |
| State List: | None |
| Global Rank: | G5T2Q |
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State Rank: |
S2 |
| Other Status: | SB_CRES |
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CRPR Changes: removed from 3.1 on 2013-02-01 |
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| Add Date: | 1980-01-01 |
| Date Edited: | 2024-10-02 |
| Lifeform: annual herb | ||||||||||||||
Blooming Period: Mar-Jun
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Elevation:
20 - 640 meters 65 - 2100 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
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Microhabitat:
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Notes: Move to List 1B? Reduced by vernal pool habitat loss; threatened by vehicles, grazing, development, and agriculture. Taxonomic problems; distinguishing between this taxon and M. sessilis (= M. minimus ssp. apus var. sessiliflorus in A California Flora (1959) by P. Munz) is difficult; are both rare? Plants in the Central Valley that resemble this taxon may be hybrids between M. minimus and M. sessilis; see Flora of North America 3:136 and Evolution 13:151-174 (1959) for details. See M. minimus in TJM (1993); not in TJM 2. See Bulletin of the California Academy of Sciences 1:277 (1885) for original description, and Aliso 2(4):396 (1952) for revised nomenclature. |
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Threats: |
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Taxonomy: |
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| Threat List Total: | 9 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 9 | 38 % |
| THREAT LIST: | ||
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| Agriculture | 3 | 12% |
| ORV activity | 3 | 12% |
| Development | 2 | 8% |
| Grazing | 2 | 8% |
| Non-native plant impacts | 1 | 4% |
| Disking | 1 | 4% |
| Other | 1 | 4% |
| Road/trail construction/maint. | 1 | 4% |
| Vandalism/dumping/litter | 1 | 4% |
| Total Occurrences: | 24 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 1 | 7 | 1 | 1 | 0 | 14 |
| Occurrence Status: | |||||
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| Historical >20 Years | 24 | ||||
| Recent <=20 Years | 0 | ||||
| Presence: | |||||
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| Presumed Extant | 24 | ||||
| Possibly Extirpated | 0 | ||||
| Presumed Extirpated | 0 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) Baja California (BA), California (CA), Oregon (OR) |
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California Counties and Islands: Name (Code) Colusa (COL), Contra Costa (CCA), Lake (LAK), Merced (MER), Riverside (RIV), San Bernardino (SBD), San Diego (SDG), Solano (SOL), Tulare (TUL), Yolo (YOL) |
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Quads: Name (Quad Code) Arena (3712036), Birds Landing (3812127), Clearlake Highlands (3812286), Clifton Court Forebay (3712175), Del Mar (3211782), Denverton (3812128), Dozier (3812137), Dulzura (3211667), Elmira (3812138), Encinitas (3311713), Gustine (3712038), Imperial Beach (3211751), Jamul Mountains (3211668), La Jolla (3211772), La Mesa (3211771), Lake Elsinore (3311763), Lakeview (3311771), Las Pulgas Canyon (3311734), Lucerne Valley (3411648), Maxwell (3912232), Murrieta (3311752), Oceanside (3311724), Otay Mesa (3211658), Otay Mountain (3211657), Perris (3311772), Pixley (3511983), Poway (3211781), Romoland (3311762), San Clemente (3311745), San Luis Ranch (3712027), San Luis Rey (3311723), San Onofre Bluff (3311735), San Pasqual (3311618), Saxon (3812146), Steele Peak (3311773), Stevinson (3712037), Wildomar (3311753), Winchester (3311761) |
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Notes:
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Presumed Extant
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