Syntrichopappus fremontii
| Syntrichopappus fremontii | |
|---|---|
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Syntrichopappus |
| Species: | S. fremontii |
| Binomial name | |
| Syntrichopappus fremontii A. Gray | |
Syntrichopappus fremontii (Fremont's gold,[1] yellowray Fremont's gold[2] false woolly daisy,[3] or Fremont xerasid[4]), is a small annual plant in the Sunflower family (Asteraceae).[3][4][5] It has yellow flower heads and grows in the Mojave Desert, to Utah and northwestern Arizona.[5]
Habitat and range
S. fremontii grows at an altitude of 600–2500 m, in open sandy or gravelly areas, often in association with Creosote bush scrub or Joshua tree woodland vegetation. It is distributed throughout the Mojave Desert, the southwest Sonoran Desert, and parts of northwestern Arizona, southwestern Utah and northern Baja California.[6]
Description
Growth pattern
S. fremontii grows from 1 to 11 centimetres (0.39 to 4.33 in) tall and is branched.[6] It somewhat resembles Eriophyllum wallacei, but grows on higher ground and has only about half the number of ray flowers.[3]
Leaves and stems
Leaves are spoon-shaped or wedge-shaped, 5 to 20 centimetres (2.0 to 7.9 in) long, and may be 3-lobed at the tip.[6]
Inflorescence and fruit
It flowers from March[3] or April[5] to June.[3][5] The inflorescence has 5 hardened phyllaries surrounding a head of 5 yellow ray flowers with several yellow disk flowers.[3] The ray flowers have 3 strong lobes, or teeth.[3]
The fruit is an achene with a pappus of 30–40 white bristles about 2 mm long, fused at their base.[3][6]
References
- ↑ "Plants Profile for Syntrichopappus (Fremont's-gold)". Natural Resources Conservation Service, United States Department of Agriculture. Archived from the original on 18 June 2014.
- ↑ "Plants Profile for Syntrichopappus (yellowray Fremont's-gold)". Natural Resources Conservation Service, United States Department of Agriculture. Archived from the original on 18 June 2014.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 Mojave Desert Wildflowers, Pam MacKay, 2nd Ed. 2013, p. 214
- ↑ 4.0 4.1 California Desert Wildflowers, An Introduction to Families, Genera, and Species; Sia Morhardt, Emil Morhardt; p 74-5
- ↑ 5.0 5.1 5.2 5.3 Jepson Desert Manual: Syntrichopappus, Dale E. Johnson, 2002 Ed., p 184
- ↑ 6.0 6.1 6.2 6.3 Dale E. Johnson (2013). Syntrichopappus fremontii, in: Jepson Flora Project (eds.) Jepson eFlora. Accessed August 2014.