Species Details
Malacothamnus davidsonii
Davidson's bushmallow
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© 2016 Keir Morse |
© 2016 Keir Morse |
© 2006 Gabi McLean |
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Scientific Name: Malacothamnus davidsonii (Rob.) Greene |
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Common Name: Davidson's bushmallow |
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| Family: | Malvaceae | |
| Element Code: | PDMAL0Q040 | |
| USDA Plants Symbol: | MADA | |
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Synonyms/Other Names: |
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| CA Rare Plant Rank: | 1B.2 |
| Fed List: | None |
| State List: | None |
| Global Rank: | G2 |
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State Rank: |
S2 |
| Other Status: | SB_CalBG/RSABG |
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CRPR Changes: |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2024-10-02 |
| Lifeform: perennial deciduous shrub | ||||||||||||||
Blooming Period: Jun-Jan
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Elevation:
185 - 1140 meters 605 - 3740 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
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Microhabitat:
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Notes: |
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Threats: Threatened by development, erosion/runoff, foot traffic/trampling, herbicides, improper burning regime, non-native plant impacts, ORV activity, road/trail construction/maintenance, vandalism/dumping/litter, waterway bank protection/maintenance, wood cutting or brush clearing. |
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Taxonomy: Formerly included populations from Monterey and San Luis Obispo counties that are now treated as M. discombobulatus; the two species are allopatric and genetically distinct. May intergrade with M. fasciculatus; see Madroño 46(4): 142-152 (1999) for information. |
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| Threat List Total: | 16 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 35 | 42 % |
| THREAT LIST: | ||
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| Other | 21 | 25% |
| Road/trail construction/maint. | 18 | 21% |
| Non-native plant impacts | 12 | 14% |
| Foot traffic/trampling | 10 | 12% |
| Wood cutting or brush clearing | 9 | 10% |
| Development | 8 | 9% |
| Improper burning regime | 7 | 8% |
| Grazing | 6 | 7% |
| Feral pigs | 6 | 7% |
| ORV activity | 6 | 7% |
| Erosion/runoff | 3 | 3% |
| Biocides | 2 | 2% |
| Altered flood/tidal/hydrologic regime | 1 | 1% |
| Military operations | 1 | 1% |
| Vandalism/dumping/litter | 1 | 1% |
| Waterway bank protection/maintenance | 1 | 1% |
| Total Occurrences: | 83 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 6 | 13 | 13 | 1 | 2 | 48 |
| Occurrence Status: | |||||
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| Historical >20 Years | 29 | ||||
| Recent <=20 Years | 54 | ||||
| Presence: | |||||
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| Presumed Extant | 81 | ||||
| Possibly Extirpated | 1 | ||||
| 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) Los Angeles (LAX), Monterey (MNT), San Luis Obispo (SLO) |
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Quads: Name (Quad Code) Bear Canyon (3612113), Bradley (3512077), Bryson (3512171), Burbank (3411823), Burnett Peak (3512172), Condor Peak (3411832), Cosio Knob (3612112), Hames Valley (3512088), Jolon (3512182), San Fernando (3411834), Sunland (3411833), Sycamore Flat (3612134), Thompson Canyon (3612122), Tierra Redonda Mountain (3512078), Van Nuys (3411824), Williams Hill (3512181) |
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Notes:
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Presumed Extant
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