Flora of North America species comparison

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Chylismia claviformis subsp. yumae

Chylismia claviformis subsp. cruciformis
Photo is of parent taxon

Yuma clavate fruit primrose
Photo is of parent taxon

browneyes, cross-flower evening primrose, cruciform evening-primrose
Habit Herbs strigillose, often densely so, sometimes also glandular puberulent distally. Herbs strigillose or glandular puberulent proximally, glandular puberulent or glabrous distally.
Stems

5–40 cm.

3–55 cm.
Leaves

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

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 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.

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.

= 14.

Chylismia claviformis subsp. yumae

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

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.)

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.)
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. 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
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
Synonyms Oenothera claviformis subsp. yumae, Camissonia claviformis subsp. yumae 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
Name authority (P. H. Raven) W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 207. (2007) (Kellogg) W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 206. (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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