Chylismia claviformis subsp. cruciformis

(Kellogg) W. L. Wagner & Hoch

Syst. Bot. Monogr. 83: 206. 2007.

Basionym: Oenothera cruciformis Kellogg Proc. Calif. Acad. Sci. 2: 227, fig. 71. 1863
Synonyms: Camissonia claviformis subsp. cruciformis (Kellogg) P. H. Raven C. claviformis var. cruciformis (Kellogg) Cronquist Chylisma cruciformis (Kellogg) Howell C. scapoidea var. cruciformis (Kellogg) Small O. claviformis subsp. citrina P. H. Raven O. claviformis subsp. cruciformis (Kellogg) P. H. Raven O. claviformis var. cruciformis (Kellogg) Munz
Treatment appears in FNA Volume 10.

Herbs strigillose or glandular puberulent proximally, glandular puberulent or glabrous distally. Stems 3–55 cm. Leaves: blade lateral lobes well developed, few to numerous, terminal lobe narrowly ovate to subcor­date, to 8 × to 4 cm, margins serrate-dentate. Flowers opening at sunrise; buds without free tips, sometimes with apical free tips less than 1 mm; floral tube yellow or orange-brown inside, 2–6.5 mm; petals bright yellow, some­times red-dotted in proximal 1/2, often fading purple, 2.5–8 mm. 2n = 14.


Phenology: Flowering Mar–May.
Habitat: Sandy or clay flats and slopes, with Artemisia tridentata, Ericameria, Grayia spinosa, or Purshia tridentata.
Elevation: 600–1500 m.

Distribution

Calif., Idaho, Nev., Oreg.

Discussion

Subspecies cruciformis is known from Lassen County, California, western Canyon and Owyhee counties, Idaho, Harney, Lake, and Malheur counties, Oregon, and central and southern Washoe County, Nevada. It intergrades with subsp. integrior.

Selected References

None.

Lower Taxa

None.
Warren L. Wagner +
(Kellogg) W. L. Wagner & Hoch +
Oenothera cruciformis +
Calif. +, Idaho +, Nev. +  and Oreg. +
600–1500 m. +
Sandy or clay flats and slopes, with Artemisia tridentata, Ericameria, Grayia spinosa, or Purshia tridentata. +
Flowering Mar–May. +
Syst. Bot. Monogr. +
Camissonia claviformis subsp. cruciformis +, C. claviformis var. cruciformis +, Chylisma cruciformis +, C. scapoidea var. cruciformis +, O. claviformis subsp. citrina +, O. claviformis subsp. cruciformis +  and O. claviformis var. cruciformis +
Chylismia claviformis subsp. cruciformis +
Chylismia claviformis +
subspecies +