Atrichoseris platyphylla

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

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

Illustrated
Basionym: 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

Distribution

V19-460-distribution-map.gif

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

Discussion

Atrichoseris platyphylla grows in the Mojave and Sonoran deserts.

Selected References

None.

Lower Taxa

None.

"fine" is not a number.

... more about "Atrichoseris platyphylla"
scarious +
ovate +  and lanceolate +
indeterminate +  and determinate +
David J. Keil +
(A. Gray) A. Gray in A. Gray et al. +
mottled +, purple-tinged +  and gray-green +
1 cm10 mm <br />0.01 m <br /> (12 cm120 mm <br />0.12 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (6 cm60 mm <br />0.06 m <br />) +
purple +  and yellow +
decurrent +
Malacothrix platyphylla +
compound +  and simple +
obovate +
tuberculate +, rugose +, muricate +  and smooth +
filiform +
purple +, rose +  and white +
0.8 cm8 mm <br />0.008 m <br /> (2 cm20 mm <br />0.02 m <br />) +
ribbed +, 4-5-angled +, not beaked +, clavate +  and subcylindric +
Ariz. +, Calif. +, Nev. +, Utah +  and Mexico (Baja California) +
0–1400 m +
puberulent +  and glabrous +
winged +  and beaked +
dispersed +
Dry desert slopes, valleys, and washes +
indeterminate +
1.5 cm15 mm <br />0.015 m <br /> (?) +  and 3.5 cm35 mm <br />0.035 m <br /> (?) +
each +  and sessile +
0.6 cm6 mm <br />0.006 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
cylindro-campanulate +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
sessile +  and petiolate +
subbasal +  and basal +
divided +, lobed +  and dentate +
2-carpellate +
Flowering Feb–May. +
connate +  and distinct +
10 +  and 15 +
subequal +  and unequal +
petiolate +  and sessile +
in A. Gray et al., Syn. Fl. N. Amer. +
bearing subulate enations +, hairy +  and bristly +
pitted +  and smooth +
convex;flat +
corky-thickened +
triangular +
reduced +
exalbuminous +
Illustrated +
1 +  and 3 +
appendaged +  and truncate +
papillate +
Undefined tribe Lactuceae +
Atrichoseris platyphylla +
Atrichoseris +
species +
20 cm200 mm <br />0.2 m <br /> (180 cm1,800 mm <br />1.8 m <br />) +
shrub +  and subshrub +