Taxon Report
Malacothamnus abbottii (Eastw.) Kearn.Abbott's bushmallow |
 © 2018 Keir Morse |
Taxon Summary
Malacothamnus abbottii, commonly known as Abbott's bushmallow, is a perennial deciduous shrub in the Malvaceae that is found only in California. It occurs within Riparian scrub, growing at elevations from 135 to 490 meters. Malacothamnus abbottii is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.Classification
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Scientific Name: |
Malacothamnus abbottii (Eastw.) Kearn. |
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Common Name: |
Abbott's bushmallow |
| Family: | Malvaceae |
| Element Code: | PDMAL0Q010 |
| USDA Plants Symbol: | MAAB |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial deciduous shrub |
| Blooming Period: May-Oct | May-Oct |
| Elevation: | 135-490 (445-1610) |
| General Habitats: | Riparian scrub |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.1 |
| Global Rank: | G1 |
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State Rank: |
S1 |
| State List: | None |
| Fed List: | None |
| Other Status: | SB_UCSC |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 11 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 2 |
| Fair (C) | 5 |
| Poor (D) | 3 |
| None (X) | 0 |
| Unknown (U) | 1 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Monterey (MNT) | |
| Quads: Name (Quad Code) | |
| Bryson (3512171), Tierra Redonda Mountain (3512078), Wunpost (3512087) | |
Threat List Data from the CNDDB
| Threat List Total: | 7 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 10 | 91 % | |
| Grazing | 10 | 90% |
| Other | 8 | 72% |
| Road/trail construction/maint. | 6 | 54% |
| Erosion/runoff | 5 | 45% |
| Agriculture | 4 | 36% |
| Development | 3 | 27% |
| Mining | 3 | 27% |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 26 October 2025].