Chylismia claviformis subsp. yumae

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

Syst. Bot. Monogr. 83: 207. 2007.

Basionym: Oenothera claviformis subsp. yumae P. H. Raven Univ. Calif. Publ. Bot. 34: 104. 1962
Synonyms: Camissonia claviformis subsp. yumae (P. H. Raven) P. H. Raven
Treatment appears in FNA Volume 10.

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 orangebrown inside, 2.5–4 mm; petals pale-yellow, fading reddish or not changing color, 3–5 mm. 2n = 14.


Phenology: Flowering Feb–May.
Habitat: Very arid dunes and sandy flats, with Ambrosia dumosa and Larrea tridentata.
Elevation: 0–300 m.

Distribution

Ariz., Calif., Mexico (Baja California), Mexico (Sonora)

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.

Selected References

None.

Lower Taxa

None.

"elongating" is not a number.

0.15 cm1.5 mm <br />0.0015 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Warren L. Wagner +
(P. H. Raven) W. L. Wagner & Hoch +
darker flecks +
Oenothera claviformis subsp. yumae +
indehiscent +  and loculicidal +
lobed +, toothed +  and entire +
reduced +
reflexed +  and erect +
curved +  and straight +
ascending +  and spreading +
0.8 cm8 mm <br />0.008 m <br /> (4 cm40 mm <br />0.04 m <br />) +
Ariz. +, Calif. +, Mexico (Baja California) +  and Mexico (Sonora) +
0–300 m. +
basifixed +  and versatile +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
actinomorphic +
curved +  and straight +
loculicidal +
oblong-cylindrical +, clavate +  and subterete +
Very arid dunes and sandy flats, with Ambrosia dumosa and Larrea tridentata. +
puberulent +  and strigillose +
unlobed +  and lobed +
deciduous +
1.5 cm15 mm <br />0.015 m <br /> (20 cm200 mm <br />0.2 m <br />) +
reduced +
0.3 cm3 mm <br />0.003 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
reduced +
membranous +
numerous +  and 1 +
0.4 cm4 mm <br />0.004 m <br /> (4 cm40 mm <br />0.04 m <br />) +
3mm +  and 5mm +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (12 cm120 mm <br />0.12 m <br />) +
Flowering Feb–May. +
Syst. Bot. Monogr. +
well-developed +
basal +  and cauline +
clavate +  and globose +
7 +  and numerous +
lenticular +  and narrowly ovoid +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
purple +, pink +, red +  and green +
deciduous +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
parenchymatous +
parietal +, axile +  and placentation +
1 +, 4 +  and 2 +
subequal +
aquatic +, amphibious +  and terrestrial +
subequal +
2 times as many or as many as sepals +
prostrate +  and decumbent +
5 cm50 mm <br />0.05 m <br /> (40 cm400 mm <br />0.4 m <br />) +
conical-peltate +
capitate +  and entire +
long-petiolate +
intrapetiolar +
0.5 cm5 mm <br />0.005 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
aquatic +, amphibious +  and terrestrial +
non-papillate +
Camissonia claviformis subsp. yumae +
Chylismia claviformis subsp. yumae +
Chylismia claviformis +
subspecies +
0 cm0 mm <br />0 m <br /> (6.5 cm65 mm <br />0.065 m <br />) +
0 cm0 mm <br />0 m <br /> (2 cm20 mm <br />0.02 m <br />) +
3(-5)-aperturate +
smooth +  and erose +
papillate +