Eschscholzia minutiflora

S. Watson

Proc. Amer. Acad. Arts 11: 122. 1876

Illustrated
Synonyms: Eschscholzia covillei Greene Eschscholzia minutiflora subsp. covillei (Greene) C. Clark Eschscholzia minutiflora subsp. twisselmanii C. Clark & M. Faull Eschscholzia minutiflora var. darwinensis M. E. Jones
Treatment appears in FNA Volume 3.
Plants annual, caulescent, erect or spreading, 5-35 cm. Leaves basal and cauline; blade grayish or bluish green, glabrous, glaucous; ultimate lobes usually obtuse, terminal broadened at apex. Inflorescences cymose or 1-flowered; buds nodding. Flowers: receptacle obconic, cup without spreading free rim; calyx acuminate, glabrous, sometimes glaucous; petals yellow, sometimes with orange spot at base, 3-26 mm. Capsules 3-6 cm. Seeds brown to black, ellipsoid, 1-1.4 mm, reticulate. 2n = 12, 24, 36.

Phenology: Flowering late winter–spring (Mar–May).
Habitat: Desert washes, flats, and slopes
Elevation: 0-2000 m

Distribution

V3 124-distribution-map.gif

Ariz., Calif., Nev., Utah, nw Mexico.

Discussion

Eschscholzia minutiflora is highly variable in flower size. Typically, plants are hexaploid (2n = 36) with petals 3-10 mm. Tetraploid plants (2n = 24) with petals 6-18 mm, from the northern and central Mojave Desert of California, have been distinguished as subsp. covillei. Diploid plants (2n = 12) with petals 10-26 mm, restricted to the El Paso and Rand mountains of the western Mojave Desert, have been distinguished as E. minutiflora subsp. twisselmannii and are considered to be of conservation concern; previously they were misattributed to E. parishii.

Lower Taxa

None.

AuthorityS. Watson +
DistributionAriz. +, Calif. +, Nev. +, Utah + and nw Mexico. +
Elevation0-2000 m +
HabitatDesert washes, flats, and slopes +
IllustrationPresent +
Illustration copyrightFlora of North America Association +
IllustratorJohn Myers +
PhenologyFlowering late winter–spring (Mar–May). +
Publication titleProc. Amer. Acad. Arts +
Publication year1876 +
Referenceclark1991a + and mosquin1961a +
Source xmlhttps://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse grained fna xml/V3/V3 124.xml +
Special statusIllustrated +
SynonymsEschscholzia covillei +, Eschscholzia minutiflora subsp. covillei +, Eschscholzia minutiflora subsp. twisselmanii + and Eschscholzia minutiflora var. darwinensis +
Taxon familyPapaveraceae +
Taxon nameEschscholzia minutiflora +
Taxon parentEschscholzia +
Taxon rankspecies +
VolumeVolume 3 +