Flora of North America species comparison

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Chylismia claviformis subsp. yumae
Photo is of parent taxon

Yuma clavate fruit primrose
Habit Herbs strigillose, often densely so, sometimes also glandular puberulent distally.
Stems

5–40 cm.
Leaves

blade lateral lobes poorly or well developed, terminal lobe lanceolate, to 6.5 × 2 cm, margins irregularly sinuate-dentate.
Flowers

opening at sunset;

buds usually without free tips, sometimes with apical free tips less than 1 mm;

floral tube orange-brown inside, 2.5–4 mm;

petals pale yellow, fading reddish or not changing color, 3–5 mm.
2n

= 14.

Chylismia claviformis subsp. yumae
Phenology Flowering Feb–May.
Habitat Very arid dunes and sandy flats, with Ambrosia dumosa and Larrea tridentata.
Elevation 0–300 m. (0–1000 ft.)
Distribution
from FNA
AZ; CA; Mexico (Baja California, Sonora)
[BONAP county map]
Discussion

Subspecies yumae is known from southeastern Imperial County, California, Yuma Desert, Arizona, and from El Gran Desierto to Puerto Peñasco in northwestern Sonora, and in northeastern Baja California. The subspecies is probably from hybridization between subspp. aurantiaca and peirsonii; it intergrades with subsp. aurantiaca and rarely hybridizes with Chylismia brevipes subsp. arizonica.

(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 claviformis
Sibling taxa
C. claviformis subsp. aurantiaca, C. claviformis subsp. claviformis, C. claviformis subsp. cruciformis, C. claviformis subsp. funerea, C. claviformis subsp. integrior, C. claviformis subsp. lancifolia, C. claviformis subsp. peeblesii, C. claviformis subsp. peirsonii, C. claviformis subsp. rubescens
Synonyms Oenothera claviformis subsp. yumae, Camissonia claviformis subsp. yumae
Name authority (P. H. Raven) W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 207. (2007)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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