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Photo is of parent taxon
Photo is of parent taxon

naked stem evening primrose, short-fruit beeblossom

Leaves

blade usually pinnately lobed, terminal lobe narrowly ovate to ovate or, sometimes, elliptic, 2–5 × 1–2.8 cm, margins dentate, oil cells on abaxial surface conspicuous, usually dark brown.

blade with lateral lobes few or absent, sometimes well developed, terminal lobe narrowly ovate to ovate or, sometimes, elliptic, 1–6.5 × 0.7–3.3 cm, margins irregularly dentate, oil cells on abaxial surface conspicuous, dark brown.

Flowers

petals 4–5.5(–8) mm.

petals 1.8–4 mm.

Capsules

16–38 mm.

8–20(–28) mm.

2n

= 14.

Chylismia scapoidea subsp. utahensis

Chylismia scapoidea subsp. brachycarpa

Phenology Flowering May–Jun. Flowering May–Jun.
Habitat Dry rocky slopes, flats, with Atriplex and Ericameria. Sandy slopes and flats, with Artemisia, Grayia, or Juniperus.
Elevation 1200–1700 m. (3900–5600 ft.) 700–2000 m. (2300–6600 ft.)
Distribution
from FNA
NV; UT
[BONAP county map]
from FNA
ID; NV; OR; UT
[BONAP county map]
Discussion

Subspecies utahensis is known from extreme northeastern Nevada (Elko County) and western Utah. P. H. Raven (1962, 1969) described this subspecies for populations that are somewhat intermediate between Chylismia walkeri subsp. tortilis and C. scapoidea subsp. brachycarpa, suggesting that this entity perhaps developed via hybridization between them. The ranges of the two putative parents heavily overlap that of subsp. utahensis. A. Cronquist et al. (1997c) combined subsp. brachycarpa and subsp. utahensis.

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

Subspecies brachycarpa is known from southeastern Oregon, southwestern Idaho, northwestern Utah, and northeastern Nevada.

(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 > Chylismia scapoidea Onagraceae > subfam. Onagroideae > tribe Onagreae > Chylismia > sect. Chylismia > Chylismia scapoidea
Sibling taxa
C. scapoidea subsp. brachycarpa, C. scapoidea subsp. macrocarpa, C. scapoidea subsp. scapoidea
C. scapoidea subsp. macrocarpa, C. scapoidea subsp. scapoidea, C. scapoidea subsp. utahensis
Synonyms Oenothera scapoidea subsp. utahensis, Camissonia scapoidea subsp. utahensis, C. scapoidea var. utahensis Oenothera scapoidea subsp. brachycarpa, Camissonia scapoidea subsp. brachycarpa
Name authority (P. H. Raven) W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 208. (2007) (P. H. Raven) W. L. Wagner & Hoch: Syst. Bot. Monogr. 83: 208. (2007)
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