The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

Munz's evening primrose

Habit Herbs annual, strigillose, often densely so. Herbs annual, glandular puberulent.
Stems

several, 8–50 cm.

several, 5–150 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.

in poorly defined basal rosette and cauline;

petiole 0.7–3.4 cm;

blade unlobed, broadly ovate to oblong-ovate, elliptic, or subcordate, 1.2–7.6 × 0.8–5.5 cm, margins serrulate to serrate-denticulate, brown oil cells prominently lining veins abaxially.

Racemes

nodding, not congested, elongating in mature bud.

erect, elongating in flower.

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 0.6–1 mm;

sepals 5–7 mm;

petals purple, fading darker purple, 7–14 mm;

stamens 4 + 4, unequal, anthers 1.5–2 mm, glabrous, stigma exserted beyond anthers at anthesis.

Capsules

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

pedicel 8–28 mm.

spreading to reflexed, clavate, 11–25 mm;

pedicel 3–5 mm.

Seeds

0.8–1.6 mm.

1.5–1.8 mm.

2n

= 14.

Chylismia munzii

Chylismia atwoodii

Phenology Flowering Mar–Jun. Flowering Aug–Nov.
Habitat Mesic slopes, washes. Open slopes in desert shrub communities, on clay soil.
Elevation 600–1600 m. (2000–5200 ft.) 1100–1600 m. (3600–5200 ft.)
Distribution
from FNA
CA; NV
[BONAP county map]
from FNA
UT
[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 atwoodii is known only from eastern Kane County, and only from a few collections, so is still poorly characterized morphologically, but clearly distinct among the purple-petaled species.

(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. brevipes, C. cardiophylla, C. claviformis, C. confertiflora, C. eastwoodiae, C. exilis, C. heterochroma, C. megalantha, C. multijuga, C. munzii, C. parryi, C. scapoidea, C. specicola, C. walkeri
Synonyms Oenothera munzii, Camissonia munzii Camissonia atwoodii
Name authority (P. H. Raven) W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 207. (2007) (Cronquist) W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 205. (2007)
Web links