Chylismia claviformis subsp. yumae |
Chylismia claviformis subsp. peeblesii |
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Yuma clavate fruit primrose |
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Habit | Herbs strigillose, often densely so, sometimes also glandular puberulent distally. | Herbs glandular puberulent and strigillose. |
Stems | 5–40 cm. |
5–60 cm. |
Leaves | blade lateral lobes poorly or well developed, terminal lobe lanceolate, to 6.5 × 2 cm, margins irregularly sinuate-dentate. |
blade lateral lobes irregular, well developed, terminal lobe narrowly ovate, to 7 × 3 cm, margins irregularly sinuate-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 sunset; buds without free tips; floral tube orange-brown inside, 3–5.5 mm; petals white, often fading purple, 3–7.5 mm. |
2n | = 14. |
= 14. |
Chylismia claviformis subsp. yumae |
Chylismia claviformis subsp. peeblesii |
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Phenology | Flowering Feb–May. | Flowering (Dec–)Jan–Apr. |
Habitat | Very arid dunes and sandy flats, with Ambrosia dumosa and Larrea tridentata. | Flat, sandy plains, washes, with Ambrosia dumosa, Carnegiea gigantea, Larrea tridentata, and Prosopis. |
Elevation | 0–300 m. (0–1000 ft.) | 100–700 m. (300–2300 ft.) |
Distribution |
AZ; CA; Mexico (Baja California, Sonora) |
AZ; NM; Mexico (Sonora) |
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 peeblesii is known throughout almost all the southwestern half of Arizona and locally in northwesternmost Sonora, and was recently collected in Grant and Hildago counties in New Mexico. It intergrades with subspp. aurantiaca and rubescens, and hybridizes with all subspecies of Chylismia brevipes. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 10. | FNA vol. 10. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Oenothera claviformis subsp. yumae, Camissonia claviformis subsp. yumae | Oenothera claviformis var. peeblesii, Camissonia claviformis subsp. peeblesii, O. claviformis subsp. peeblesii |
Name authority | (P. H. Raven) W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 207. (2007) | (Munz) W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 206. (2007) |
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