Species Details

Malacothamnus arcuatus

arcuate bush-mallow

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Photo by © 2017 Keir Morse  max-height:128px; max-width:145px;
© 2017 Keir Morse
Photo by © 2017 Keir Morse  max-height:128px; max-width:145px;
© 2017 Keir Morse
Photo by © 2017 Keir Morse  max-height:128px; max-width:145px;
© 2017 Keir Morse
Scientific Name:
Malacothamnus arcuatus (Greene) Greene
Common Name:
arcuate bush-mallow
Family: Malvaceae
Element Code: PDMAL0Q0E0
USDA Plants Symbol:
Synonyms/Other Names:
Lifeform: perennial deciduous shrub
Blooming Period: Apr-Sep
Elevation:
15 - 355 meters
50 - 1165 feet
General Habitat:
  • Chaparral
  • Cismontane woodland
General Micro Habitat:
Micro Habitat:
Notes:
Threatened by alteration of fire regimes. A synonym of M. fasciculatus in The Jepson Manual. See Manual of the Botany of the Region of San Francisco Bay, p. 66 (1894) by E. Greene for original description, Leaflets of Botanical Observation and Criticism 1:208 (1906) for revised nomenclature, and Leaflets of Western Botany 6(6):132-133 (1951) for taxonomic treatment.
Threats:
Taxonomy:
Other:
References:
Total Occurrences: 30
Element Occurrence Ranks:
A B C D X U
2 2 5 2 2 17
Occurrence Status:
Historical >20 Years 18
Recent <=20 Years 12
Presence:
Presumed Extant 28
Possibly Extirpated 1
Presumed Extirpated 1
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
San Mateo (SMT), Santa Clara (SCL), Santa Cruz (SCR)
Quads: Name (Quad Code)
Big Basin (3712222), Cupertino (3712231), La Honda (3712233), Laurel (3712118), Loma Prieta (3712117), Los Gatos (3712128), Milpitas (3712148), Mindego Hill (3712232), Montara Mountain (3712254), Mt. Madonna (3712116), Palo Alto (3712242), San Francisco South (3712264), San Mateo (3712253), Santa Teresa Hills (3712127), Woodside (3712243)
Notes:
Definitions of codes following a county and/or quad:
* Presumed extirpated
(?) Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.

Map

Presumed Extant
Counties   Quads