Atrichoseris platyphylla

(A. Gray) A. Gray in A. Gray et al.

in A. Gray et al., Syn. Fl. N. Amer. 1(2): 410.

Basionyms: Malacothrix platyphylla A. Gray Proc. Amer. Acad. Arts 9: 214. 1874
Treatment appears in FNA Volume 19. Treatment on page 309.
Stems glaucous. Basal leaves gray-green, glaucous, often purple-tinged, especially abaxially, often adaxially mottled, 1–12 × 0.5–6 cm. Heads 1.5–3.5 cm diam. Involucres 6–10 mm. Florets: corollas 8–20 mm, inner with bases yellow or purple, much shorter than outer. Cypselae 4–4.5 mm. 2n = 18.

Phenology: Flowering Feb–May.
Habitat: Dry desert slopes, valleys, and washes
Elevation: 0–1400 m



Ariz., Calif., Nev., Utah, Mexico (Baja California).


Atrichoseris platyphylla grows in the Mojave and Sonoran deserts.

Selected References


Lower Taxa


AuthorDavid J. Keil +
Authority(A. Gray) A. Gray in A. Gray et al. +
BasionymsMalacothrix platyphylla +
DistributionAriz. +, Calif. +, Nev. +, Utah + and Mexico (Baja California). +
Elevation0–1400 m +
HabitatDry desert slopes, valleys, and washes +
IllustrationPresent +
Illustration copyrightFlora of North America Association +
IllustratorJohn Myers +
PhenologyFlowering Feb–May. +
Publication titlein A. Gray et al., Syn. Fl. N. Amer. +
Publication year1884 +
ReferenceNone +
Source xml grained fna xml/V19-20-21/V19 460.xml +
SynonymsUndefined tribe Lactuceae +
Taxon familyAsteraceae +
Taxon nameAtrichoseris platyphylla +
Taxon parentAtrichoseris +
Taxon rankspecies +
VolumeVolume 19 +