Chylismia megalantha |
Chylismia munzii |
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Munz's evening primrose |
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Habit | Herbs annual, glandular pubescent throughout. | Herbs annual, strigillose, often densely so. |
Stems | several, 10–200 cm. |
several, 8–50 cm. |
Leaves | in poorly defined basal rosette and cauline; petiole 1.8–5.5 cm; blade unlobed, broadly cordate to ovate, 2.4–8 × 7 cm, margins sinuate-dentate, yellowish oil cells prominently lining veins abaxially. |
primarily in basal rosette and also cauline, 1.5–20 × 0.5–3 cm; petiole 0.5–5 cm; blade pinnately lobed, terminal lobe ovate to narrowly ovate, 1.3–6 × 0.6–3 cm, margins denticulate, brownish oil cells lining veins abaxially. |
Racemes | erect, elongating in flower. |
nodding, not congested, elongating in mature bud. |
Flowers | opening at sunrise; buds without free tips; floral tube 4–9 mm, with matted, villous hairs inside; sepals 4.5–9 mm; petals pale to dark lavender, diffusely purplish-flecked near base, white at very base, fading darker lavender, 9–14 mm; stamens unequal, filaments of antisepalous stamens 6–12 mm, of antipetalous ones 3.5–8 mm, anthers 2 mm, glabrous; style 14–22.5 mm, stigma exserted beyond anthers at anthesis. |
opening at sunrise; buds with or without subapical free tips; floral tube orange-brown inside, 2–3 mm, villous inside; sepals 4–7 mm; petals bright yellow, with red dots near base, fading pale yellow or yellowish orange, 3–10 mm; stamens subequal, filaments 4–8 mm, anthers 3–6 mm, ciliate; style 8–18 mm, stigma exserted beyond anthers at anthesis. |
Capsules | erect or ascending, clavate, 8–14 mm; pedicel 2–3.5 mm. |
widely spreading, becoming sharply reflexed, clavate, 8–24 mm; pedicel 8–28 mm. |
Seeds | 1–1.3 mm. |
0.8–1.6 mm. |
2n | = 14. |
= 14. |
Chylismia megalantha |
Chylismia munzii |
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Phenology | Flowering Jun–Oct. | Flowering Mar–Jun. |
Habitat | Rubble derived from volcanic tuff, partly on moist soil along springs. | Mesic slopes, washes. |
Elevation | 1200–1400 m. (3900–4600 ft.) | 600–1600 m. (2000–5200 ft.) |
Distribution |
NV |
CA; NV |
Discussion | Chylismia megalantha is known from around Frenchman Drainage to French Peak and Skull Mountain in southern Nye County. P. H. Raven (1962, 1969) determined this species to be self-compatible, but outcrossing. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Chylismia munzii is known from middle elevations in the mountains at the north end, eastward from, and south of Death Valley, from Saline Valley and the Grapevine Mountains, Inyo County, California, and Yucca Flat, Nye County, Nevada, southward to the Kingston Range, San Bernardino County, California.P. H. Raven (1962, 1969) determined this species to be self-incompatible. It sometimes hybridizes with C. brevipes subsp. brevipes and C. claviformis subsp. aurantiaca. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 10. | FNA vol. 10. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Oenothera heterochromas. var. megalantha, Camissonia megalantha, O. megalantha | Oenothera munzii, Camissonia munzii |
Name authority | (Munz) W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 207. (2007) | (P. H. Raven) W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 207. (2007) |
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