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Arizona sun cup

Habit Herbs slender, often branched distally, villous, sometimes also strigillose, at least distally.
Flowers

buds individually reflexed, without free tips or with apical free tips less than 1 mm;

floral tube orange-brown inside, 3–5 mm;

petals often with red dots at base, often fading reddish, 3–8 mm;

anthers 2.5–5 mm.

Capsules

18–60 mm;

pedicel 2.5–5 mm.

2n

= 14.

Chylismia brevipes subsp. arizonica

Phenology Flowering Feb–Apr.
Habitat Rocky slopes, flats.
Elevation 70–300 m. (200–1000 ft.)
Distribution
from FNA
AZ; CA
[BONAP county map]
Discussion

Subspecies arizonica is known from Yuma County, Arizona, and eastern Imperial County, California. It hybridizes with Chylismia claviformis subspp. peeblesii, rubescens, and yumae.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 10.
Parent taxa Onagraceae > subfam. Onagroideae > tribe Onagreae > Chylismia > sect. Chylismia > Chylismia brevipes
Sibling taxa
C. brevipes subsp. brevipes, C. brevipes subsp. pallidula
Synonyms Oenothera brevipes subsp. arizonica, Camissonia brevipes subsp. arizonica
Name authority (P. H. Raven) W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 205. (2007)
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