Eulobus californicus

Nuttall ex Torrey & A. Gray

Fl. N. Amer. 1: 515. 1840.

Synonyms: Camissonia californica (Nuttall ex Torrey & A. Gray) P. H. Raven Oenothera leptocarpa Greene
Treatment appears in FNA Volume 10.
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Herbs sparsely strigillose, some­times also sparsely glan­dular puberulent, especially on leaves and inflorescences. Stems erect, virgate, bluish green and often glaucescent, or bright green, thick, hollow, fleshy, 2–180 cm. Leaves in a well-defined basal rosette, usually withered by anthesis, and also cauline; basal 2.5–10 (–30) × 0.6–2.5 (–6.5) cm, petiole 0–6 cm, blade narrowly elliptic, margins irregularly pinnatifid; cauline very much reduced distally, 1–8 × (0.1–) 0.3–1 (–1.6) cm, petiole 0–3 cm, blade narrowly elliptic, margins irregularly pinnatifid. Flowers opening at sunrise; floral-tube 0.6–1.5 mm, closed by a conspicuous rounded, fleshy, reddish-brown disc; sepals reddish green, 3.9–8 mm; petals ± with fine, red flecking at base, 6–14 mm; episepalous filaments 3–9 mm, epipetalous filaments 2–5 mm, anthers of longer stamens 1–2.5 mm, those of shorter stamens 0.5–1.2 mm; style 4–10 mm, stigma globose, 0.8–2 mm diam., surrounded by anthers of longer stamens at anthesis. Capsules sharply reflexed at maturity, cylindrical fresh, 4-angled dry, (45–) 60–110 × 1–1.2 mm. Seeds olive brown, often flecked with purple dots, 1.3–1.6 × 0.5–0.7 mm. 2n = 14, 28.


Phenology: Flowering Dec–May.
Habitat: Open places in coastal sage scrub, chaparral, desert scrub, valley grasslands, foot­hill woodlands, washes, flats, loose soils.
Elevation: 0–1300 m.

Distribution

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

Discussion

Eulobus californicus is known from western and southern Arizona, central and southern California, as well as from adjacent areas of northwestern Mexico.

P. H. Raven (1969) determined that Eulobus californicus is self-compatible and primarily autoga­mous. Known diploid (2n = 14) populations are all in California.

Selected References

None.

Lower Taxa

None.
... more about "Eulobus californicus"
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
Warren L. Wagner +
Nuttall ex Torrey & A. Gray +
indehiscent +  and loculicidal +
lobed +, toothed +  and entire +
pinnatifid +  and lobed +
4.5 cm45 mm <br />0.045 m <br /> (6 cm60 mm <br />0.06 m <br />) +
curved +  and straight +
6 cm60 mm <br />0.06 m <br /> (11 cm110 mm <br />0.11 m <br />) +
4-angled +  and cylindrical +
0.1 cm1 mm <br />0.001 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
reddish-brown +
conspicuous +
rounded +
Ariz. +, Calif. +, Mexico (Baja California) +  and Mexico (Sonora) +
0–1300 m. +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
basifixed +  and versatile +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
actinomorphic +
curved +  and straight +
subterete +  and torulose +
Open places in coastal sage scrub, chaparral, desert scrub, valley grasslands, foothill woodlands, washes, flats, loose soils. +
puberulent +  and strigillose +
deciduous +
basal +  and cauline +
pinnatifid +
numerous +  and 1 +
flecked +, red +, fading orangish +  and yellow +
0.6 cm6 mm <br />0.006 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
0 cm0 mm <br />0 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Flowering Dec–May. +
Fl. N. Amer. +
basal +  and cauline +
clavate +  and globose +
flecked with purple dots +  and olive brown +
0.13 cm1.3 mm <br />0.0013 m <br /> (0.16 cm1.6 mm <br />0.0016 m <br />) +
7 +  and numerous +
papillose +
triangular +  and obovoid +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
reddish green +
deciduous +
0.39 cm3.9 mm <br />0.0039 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
parenchymatous +
parietal +, axile +  and placentation +
subequal +
aquatic +, amphibious +  and terrestrial +
2 times as many or as many as sepals +
hollow +  and virgate +
glaucescent +
bright green +  and bluish green +
prostrate +  and decumbent +
2 cm20 mm <br />0.02 m <br /> (180 cm1,800 mm <br />1.8 m <br />) +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
petiolate +  and sessile +
intrapetiolar +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
aquatic +, amphibious +  and terrestrial +
non-papillate +
Camissonia californica +  and Oenothera leptocarpa +
Eulobus californicus +
species +
3(-5)-aperturate +
smooth +  and erose +
papillate +