Chylismia scapoidea subsp. utahensis |
Chylismia scapoidea subsp. brachycarpa |
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naked stem evening primrose, short-fruit beeblossom |
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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. |
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Chylismia scapoidea subsp. utahensis |
Chylismia scapoidea subsp. brachycarpa |
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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 |
NV; UT |
ID; NV; OR; UT |
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 | ||
Sibling taxa | ||
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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