Isocoma menziesii
| Isocoma menziesii | |
|---|---|
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Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Isocoma |
| Species: | I. menziesii
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| Binomial name | |
| Isocoma menziesii | |
| Synonyms[1] | |
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Synonymy | |
Isocoma menziesii is a species of flowering plant in the daisy family, known by the common name Menzies' goldenbush.
It is native to California, Baja California, and Baja California Sur, where it grows in coastal and inland habitat such as chaparral, particularly in sandy soils.[2]
Description[]
Isocoma menziesii is a subshrub forming a matted bush reaching between one and two meters (40-80 inches) tall. The erect branching stems may be hairless to woolly, are generally glandular, and vary in color from gray-green to reddish brown.[3]
The leaves are oval-shaped to somewhat rectangular, gray-green and sometimes hairy and glandular, and 1–5 centimetres (0.39–1.97 in) long with stumpy teeth along the edges.[3]
The abundant inflorescences are clusters of thick flower heads. Each head is a capsule with layers of thick, pointed, greenish phyllaries. The head is filled with large, protruding, cylindrical yellow disc florets with long stigmas.[3]
Varieties[]
- Isocoma menziesii var. decumbens (Greene) G.L.Nesom - far northern Baja California, San Diego County, Channel Islands
- Isocoma menziesii var. diabolica G. L. Nesom - Santa Clara + San Benito Counties
- Isocoma menziesii var. menziesii - Baja California, Baja California Sur, San Diego County, Orange County, western Riverside County, Channel Islands
- Isocoma menziesii var. sedoides (Greene) G.L.Nesom - from Orange to San Luis Obispo Counties including Channel Islands
- Isocoma menziesii var. tridentata (Greene) G.L.Nesom - southern Baja California including Isla Cedros, northern Baja California Sur
- Isocoma menziesii var. vernonioides (Nutt.) G.L.Nesom - from Monterey County to northern Baja California[2][1][3]
References[]
- ^ Jump up to: a b The Plant List, Isocoma menziesii (Hook. & Arn.) G.L.Nesom
- ^ Jump up to: a b Nesom, G.L. 1991. Taxonomy of Isocoma (Compositae: Astereae). Phytologia 70(2): 69–114 includes distribution map on page 72
- ^ Jump up to: a b c d Flora of North America, Isocoma menziesii (Hooker & Arnott) G. L. Nesom, 1991. Pacific jimmyweed , Menzies’ goldenbush
External links[]
- Jepson Manual Treatment of Isocoma menziesii
- Isocoma menziesii — Calphotos Photos gallery, University of California
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- Isocoma
- Flora of California
- Flora of Baja California
- Flora of Baja California Sur
- Natural history of the California chaparral and woodlands
- Natural history of the Channel Islands of California
- Natural history of the Peninsular Ranges
- Natural history of the Santa Monica Mountains
- Natural history of the Transverse Ranges
- Plants described in 1839
- Astereae stubs