Chylismia scapoidea subsp. utahensis
Syst. Bot. Monogr. 83: 208. 2007.
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. Flowers: petals 4–5.5(–8) mm. Capsules 16–38 mm.
Phenology: Flowering May–Jun.
Habitat: Dry rocky slopes, flats, with Atriplex and Ericameria.
Elevation: 1200–1700 m.
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.
Selected References
None.