Taxon Report

Malacothamnus aboriginum (Rob.) Greene

Indian Valley bushmallow

Print Report

© 2009 Keir Morse

Classification


Scientific Name:	Malacothamnus aboriginum (Rob.) Greene
Common Name:	Indian Valley bushmallow
Family:	Malvaceae
Element Code:	PDMAL0Q020
USDA Plants Symbol:	MAAB2
Synonyms/Other Names:

Ecology and Life History


Lifeform:	perennial deciduous shrub
Blooming Period: Apr-Oct	Apr-Oct
Elevation:	150-1700 (490-5580)
General Habitats:	Chaparral, Cismontane woodland
Microhabitat:	Burned areas (often), Granitic, Rocky
Microhabitat Details:

Conservation Status


CA Rare Plant Rank:	1B.2
Global Rank:	G3
State Rank:	S3
State List:	None
Fed List:	None
Other Status:	BLM_S; SB_CalBG/RSABG; SB_SBBG
CRPR Changes:

Occurrence Data from the CNDDB


Total Occurrences:	63
Element Occurrence Ranks:
Excellent (A)	0
Good (B)	2
Fair (C)	2
Poor (D)	3
None (X)	0
Unknown (U)	56

Location


California Endemic: True
California Counties and Islands: Name (Code)
Fresno (FRE), Kings (KNG), Monterey (MNT), San Benito (SBT)
Quads: Name (Quad Code)
Alcalde Hills (3612024), Bickmore Canyon (3612152), Cherry Peak (3612162), Ciervo Mtn. (3612045), Curry Mountain (3612014), Garza Peak (3512082), Gonzales (3612154), Hepsedam Peak (3612037), Hernandez Reservoir (3612047), Hollister (3612174), Idria (3612046), Joaquin Rocks (3612034), Llanada (3612058), Lonoak (3612038), North Chalone Peak (3612142), Paicines (3612163)?, Panoche Pass (3612161), Pinalito Canyon (3612131), Rock Spring Peak (3612048), San Benito (3612151), San Benito Mtn. (3612036), Santa Rita Peak (3612035), Smith Mountain (3612015), Soledad (3612143), Stockdale Mountain (3512085), The Dark Hole (3512083), Topo Valley (3612141), Tres Pecos Farms (3612043), Tres Pinos (3612173), Valleton (3512086)

Threat List Data from the CNDDB


Threat List Total:	6
EOs with Threat Listed:	Total EOs	% of EOs
	8	13 %
Grazing	4	6%
Road/trail construction/maint.	3	4%
Biocides	1	1%
Mining	1	1%
Non-native plant impacts	1	1%
ORV activity	1	1%

Notes



Appears in abundance after fires.
Threats:
Threatened by grazing, vehicles, road maintenance.
Taxonomy:
M. enigmaticus specimens from SDG Co. have been confused with this species. See Synoptical Flora of North America 1(1):311 (1897) for original description.

Selected References

Citation California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 27 December 2024].