Taxon Report
Malacothamnus davidsonii (Rob.) GreeneDavidson's bushmallow |
 © 2016 Keir Morse |
Classification
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Scientific Name: |
Malacothamnus davidsonii (Rob.) Greene |
|
Common Name: |
Davidson's bushmallow |
| Family: | Malvaceae |
| Element Code: | PDMAL0Q0V0 |
| USDA Plants Symbol: | MADA |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial deciduous shrub |
| Blooming Period: Jun-Jan | Jun-Jan |
| Elevation: | 185-1140 (605-3740) |
| General Habitats: | Chaparral, Cismontane woodland, Coastal scrub, Riparian woodland |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | GNR |
|
State Rank: |
S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | SB_CalBG/RSABG |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 53 |
| Element Occurrence Ranks: | |
| Excellent (A) | 6 |
| Good (B) | 9 |
| Fair (C) | 11 |
| Poor (D) | 1 |
| None (X) | 1 |
| Unknown (U) | 25 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Quads: Name (Quad Code) | |
Threat List Data from the CNDDB
| Threat List Total: | 12 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 29 | 55 % | |
| Other | 16 | 30% |
| Road/trail construction/maint. | 13 | 24% |
| Wood cutting or brush clearing | 9 | 16% |
| Development | 8 | 15% |
| Non-native plant impacts | 6 | 11% |
| ORV activity | 6 | 11% |
| Foot traffic/trampling | 5 | 9% |
| Erosion/runoff | 3 | 5% |
| Biocides | 2 | 3% |
| Improper burning regime | 1 | 1% |
| Vandalism/dumping/litter | 1 | 1% |
| Waterway bank protection/maintenance | 1 | 1% |
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. |
Citation
California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 25 December 2024].