Chylismia scapoidea subsp. utahensis

(P. H. Raven) W. L. Wagner & Hoch

Syst. Bot. Monogr. 83: 208. 2007.

Basionym: Oenothera scapoidea subsp. utahensis P. H. Raven Univ. Calif. Publ. Bot. 34: 96. 1962
Synonyms: Camissonia scapoidea subsp. utahensis (P. H. Raven) P. H. Raven C. scapoidea var. utahensis (P. H. Raven) S. L. Welsh
Treatment appears in FNA Volume 10.

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.

Lower Taxa

None.

"elongating" is not a number.

glabrous +  and ciliate +
0.1 cm1 mm <br />0.001 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Warren L. Wagner +
(P. H. Raven) W. L. Wagner & Hoch +
Oenothera scapoidea subsp. utahensis +
indehiscent +  and loculicidal +
lobed +, toothed +  and entire +
reduced +
reflexed +  and erect +
curved +  and straight +
1.6 cm16 mm <br />0.016 m <br /> (3.8 cm38 mm <br />0.038 m <br />) +
Nev. +  and Utah. +
1200–1700 m. +
basifixed +  and versatile +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
glabrous +  and villous +
0.1 cm1 mm <br />0.001 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
actinomorphic +
curved +  and straight +
loculicidal +
oblong-cylindrical +, clavate +  and subterete +
Dry rocky slopes, flats, with Atriplex and Ericameria. +
puberulent +  and strigillose +
unlobed +  and lobed +
deciduous +
1 cm10 mm <br />0.01 m <br /> (18 cm180 mm <br />0.18 m <br />) +
reduced +
0.5 cm5 mm <br />0.005 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
reduced +
irregularly dentate +  and subentire +
membranous +
numerous +  and 1 +
0.4 cm4 mm <br />0.004 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
yellowish orange +, fading pale-yellow +  and bright-yellow +
0.4 cm4 mm <br />0.004 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (6.5 cm65 mm <br />0.065 m <br />) +
Flowering May–Jun. +
Syst. Bot. Monogr. +
well-developed +
basal +  and cauline +
clavate +  and globose +
7 +  and numerous +
lenticular +  and narrowly ovoid +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
purple +, pink +, red +  and green +
deciduous +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
parenchymatous +
parietal +, axile +  and placentation +
1 +, 4 +  and 2 +
subequal +
aquatic +, amphibious +  and terrestrial +
unequal +
2 times as many or as many as sepals +
branched +  and unbranched +
prostrate +  and decumbent +
3 cm30 mm <br />0.03 m <br /> (45 cm450 mm <br />0.45 m <br />) +
conical-peltate +
capitate +  and entire +
long-petiolate +
intrapetiolar +
0.3 cm3 mm <br />0.003 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
aquatic +, amphibious +  and terrestrial +
non-papillate +
Camissonia scapoidea subsp. utahensis +  and C. scapoidea var. utahensis +
Chylismia scapoidea subsp. utahensis +
Chylismia scapoidea +
subspecies +
2 cm20 mm <br />0.02 m <br /> (5 cm50 mm <br />0.05 m <br />) +
, +, narrowly ovate +  and ovate +
1 cm10 mm <br />0.01 m <br /> (2.8 cm28 mm <br />0.028 m <br />) +
3(-5)-aperturate +
smooth +  and erose +
papillate +