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, 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

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
from FNA
NV
[BONAP county map]
from FNA
CA; NV
[BONAP county map]
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 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. multijuga, C. munzii, 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. heterochroma, C. megalantha, C. multijuga, C. parryi, C. scapoidea, C. specicola, C. walkeri
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)
Web links