Taxon Report

Madia radiata Kell.

showy golden madia

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Taxon Summary

Madia radiata, commonly known as showy golden madia, is a annual herb in the Asteraceae that is found only in California. It occurs within Cismontane woodland, and Valley and foothill grassland, growing at elevations from 25 to 1215 meters. Madia radiata is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.


  Classification

Scientific Name:
Madia radiata Kell.
Common Name:
showy golden madia
Family: Asteraceae
Element Code: PDAST650E0
USDA Plants Symbol: MARA
Synonyms/Other Names:

Ecology and Life History

Lifeform: annual herb
Blooming Period: Mar-May Mar-May
Elevation: 25-1215 (80-3985)
General Habitats: Cismontane woodland, Valley and foothill grassland
Microhabitat:
Microhabitat Details:

Occurrence Data from the CNDDB

Total Occurrences: 100
Element Occurrence Ranks:
   Excellent (A) 38
   Good (B) 20
   Fair (C) 0
   Poor (D) 1
   None (X) 0
   Unknown (U) 41
California Endemic:  True
California Counties and Islands: Name (Code)
Contra Costa (CCA)*, Fresno (FRE), Kern (KRN), Kings (KNG)*, Monterey (MNT)*, San Benito (SBT), San Joaquin (SJQ)*, San Luis Obispo (SLO), Santa Barbara (SBA)*, Stanislaus (STA)
Quads: Name (Quad Code)
Antioch South (3712187)*, Camatta Ranch (3512043), Chimineas Ranch (3511928), Cholame (3512063), Cholame Valley (3512073), Chounet Ranch (3612066), Ciervo Mtn. (3612045), Clayton (3712188), Cuyama (3411985)*, Domengine Ranch (3612033), Elkhorn Hills (3511915), Garza Peak (3512082)*, Hernandez Reservoir (3612047), Holland Canyon (3512052), Idria (3612046), Joaquin Rocks (3612034), Kreyenhagen Hills (3612013)*, La Panza NE (3512041), Las Yeguas Ranch (3511948), Lillis Ranch (3612044)*, Llanada (3612058), Lokern (3511945), Lone Tree Creek (3712154)*, Midway (3712165)*, Monocline Ridge (3612055), New Cuyama (3411986), Orchard Peak (3512062)*, Packwood Creek (3512051), Panoche (3612057), Parkfield (3512084)*, Rock Spring Peak (3612048), Santa Rita Peak (3612035)*, Shale Point (3511958), Smith Mountain (3612015)*, Solyo (3712153)*, Taylor Canyon (3511918), Tent Hills (3512072), The Dark Hole (3512083)*, Tracy (3712164), Tumey Hills (3612056), Wells Ranch (3511916)

Threat List Data from the CNDDB

Threat List Total: 7
EOs with Threat Listed: Total EOs % of EOs
16 16 %
Grazing 9 9%
Road/trail construction/maint. 8 8%
Non-native plant impacts 5 5%
Foot traffic/trampling 4 4%
Erosion/runoff 2 2%
ORV activity 2 2%
Vandalism/dumping/litter 1 1%

Notes

Occurrences scattered. Most collections old; field work needed. Threatened by grazing and non-native plants.
Threats:
Taxonomy:
Citation California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 30 January 2025].