Flora of North America species comparison

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Chylismia claviformis subsp. cruciformis

Chylismia claviformis subsp. yumae
Photo is of parent taxon

browneyes, cross-flower evening primrose, cruciform evening-primrose
Photo is of parent taxon

Yuma clavate fruit primrose
Habit Herbs strigillose or glandular puberulent proximally, glandular puberulent or glabrous distally. Herbs strigillose, often densely so, sometimes also glandular puberulent distally.
Stems

3–55 cm.

5–40 cm.
Leaves

blade lateral lobes well developed, few to numerous, terminal lobe narrowly ovate to subcordate, to 8 × to 4 cm, margins serrate-dentate.

blade lateral lobes poorly or well developed, terminal lobe lanceolate, to 6.5 × 2 cm, margins irregularly sinuate-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.

opening at sunset;

buds usually without free tips, sometimes with apical free tips less than 1 mm;

floral tube orange-brown inside, 2.5–4 mm;

petals pale yellow, fading reddish or not changing color, 3–5 mm.
2n

= 14.

= 14.

Chylismia claviformis subsp. cruciformis

Chylismia claviformis subsp. yumae
Phenology Flowering Mar–May. Flowering Feb–May.
Habitat Sandy or clay flats and slopes, with Artemisia tridentata, Ericameria, Grayia spinosa, or Purshia tridentata. Very arid dunes and sandy flats, with Ambrosia dumosa and Larrea tridentata.
Elevation 600–1500 m. (2000–4900 ft.) 0–300 m. (0–1000 ft.)
Distribution
from FNA
CA; ID; NV; OR
[BONAP county map]
from FNA
AZ; CA; Mexico (Baja California, Sonora)
[BONAP county map]
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.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Subspecies yumae is known from southeastern Imperial County, California, Yuma Desert, Arizona, and from El Gran Desierto to Puerto Peñasco in northwestern Sonora, and in northeastern Baja California. The subspecies is probably from hybridization between subspp. aurantiaca and peirsonii; it intergrades with subsp. aurantiaca and rarely hybridizes with Chylismia brevipes subsp. arizonica.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 10. FNA vol. 10.
Parent taxa Onagraceae > subfam. Onagroideae > tribe Onagreae > Chylismia > sect. Chylismia > Chylismia claviformis Onagraceae > subfam. Onagroideae > tribe Onagreae > Chylismia > sect. Chylismia > Chylismia claviformis
Sibling taxa
C. claviformis subsp. aurantiaca, C. claviformis subsp. claviformis, C. claviformis subsp. funerea, C. claviformis subsp. integrior, C. claviformis subsp. lancifolia, C. claviformis subsp. peeblesii, C. claviformis subsp. peirsonii, C. claviformis subsp. rubescens, C. claviformis subsp. yumae
C. claviformis subsp. aurantiaca, C. claviformis subsp. claviformis, C. claviformis subsp. cruciformis, C. claviformis subsp. funerea, C. claviformis subsp. integrior, C. claviformis subsp. lancifolia, C. claviformis subsp. peeblesii, C. claviformis subsp. peirsonii, C. claviformis subsp. rubescens
Synonyms Oenothera cruciformis, Camissonia claviformis subsp. cruciformis, C. claviformis var. cruciformis, Chylisma cruciformis, C. scapoidea var. cruciformis, O. claviformis subsp. citrina, O. claviformis subsp. cruciformis, O. claviformis var. cruciformis Oenothera claviformis subsp. yumae, Camissonia claviformis subsp. yumae
Name authority (Kellogg) W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 206. (2007) (P. H. Raven) W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 207. (2007)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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