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Munz's evening primrose

Shockley's evening-primrose

Habit Herbs annual, strigillose, often densely so. Herbs annual, glandular puberulent throughout, or glabrate and glaucous distally.
Stems

several, 8–50 cm.

several, 10–100 cm.

Leaves

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.

primarily in poorly defined basal rosette, cauline greatly reduced when present;

petiole 0.4–8 cm;

blade unlobed, ovate to cordate, 2–11.5 × 1.4–5 cm, margins sinuate-dentate, brown oil cells prominently lining veins abaxially.

Racemes

nodding, not congested, elongating in mature bud.

erect, elongating in anthesis.

Flowers

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.

opening at sunrise;

buds without free tips;

floral tube 2–5 mm, villous inside;

sepals 1.5–3.5 mm;

petals lavender, paler and often with flecks toward base, often yellow at very base, fading darker lavender, 2–6 mm;

stamens unequal, filaments of antisepalous ones 1.8–3 mm, of antipetalous ones 1–2.5 mm, anthers 0.6–1 mm, glabrous or sparsely ciliate;

style 4–7 mm, stigma surrounded by anthers at anthesis.

Capsules

widely spreading, becoming sharply reflexed, clavate, 8–24 mm;

pedicel 8–28 mm.

erect, clavate, 7–13 mm;

pedicel 2–5 mm.

Seeds

0.8–1.6 mm.

1–1.2 mm.

2n

= 14.

= 14.

Chylismia munzii

Chylismia heterochroma

Phenology Flowering Mar–Jun. Flowering May–Jun.
Habitat Mesic slopes, washes. Alluvial and rocky slopes.
Elevation 600–1600 m. (2000–5200 ft.) 600–2200 m. (2000–7200 ft.)
Distribution
from FNA
CA; NV
[BONAP county map]
from FNA
CA; NV
[WildflowerSearch map]
[BONAP county map]
Discussion

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.)

Chylismia heterochroma is known from Churchill and Lander counties, Nevada, south to Lincoln and southern Nye counties, Nevada, to adjacent California (Mono Lake, Mono County, and central Inyo counties). P. H. Raven (1962, 1969) determined this species to be self-compatible and autogamous.

(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 Onagraceae > subfam. Onagroideae > tribe Onagreae > Chylismia > sect. Chylismia
Sibling taxa
C. arenaria, C. atwoodii, C. brevipes, C. cardiophylla, C. claviformis, C. confertiflora, C. eastwoodiae, C. exilis, C. heterochroma, C. megalantha, C. multijuga, C. parryi, C. scapoidea, C. specicola, C. walkeri
C. arenaria, C. atwoodii, C. brevipes, C. cardiophylla, C. claviformis, C. confertiflora, C. eastwoodiae, C. exilis, C. megalantha, C. multijuga, C. munzii, C. parryi, C. scapoidea, C. specicola, C. walkeri
Synonyms Oenothera munzii, Camissonia munzii Oenothera heterochromas., Camissonia heterochroma, C. heterochroma var. monoensis, O. heterochroma subsp. monoensis, O. heterochroma var. monoensis
Name authority (P. H. Raven) W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 207. (2007) (S. Watson) Small: Bull. Torrey Bot. Club 23: 193. (1896) — (as Chylisma)
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