Atriplex pacifica

A. Nelson

Proc. Biol. Soc. Wash., 17: 99. 1904.

Common names: Pacific orach
Basionym: Obione microcarpa Bentham Bot. Voy. Sulphur, 48. 1844,
Synonyms: Atriplex ramosissima Nuttall ex Moquin-Tandon
Treatment appears in FNA Volume 4. Treatment on page 363. Mentioned on page 329.
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Herbs, annual, prostrate, sometimes tinged red, 1–6 dm, forming tangled masses 3–10 dm diam., lightly scurfy when young. Leaves numerous, sessile or proximal short petiolate; blade greenish adaxially, paler abaxially, oblanceolate to spatulate-elliptic or oval, (3–) 5–18 × 1–8 mm, margin entire, more scurfy abaxially. Staminate flowers in glomerules largely in distal bractless axils, thus short spicate; calyx 5-cleft. Pistillate flowers in proximal axils. Fruiting bracteoles subsessile or stipe to 0.3 mm, suborbiculate to obovate, 1–1.5 (–2) × 1.1–1.8 mm, united to middle, margin minutely 3–5-toothed at apex, otherwise entire, apex green, faces smooth or rarely tuberculate. Seeds light-brown, 0.8–1 mm.


Phenology: Flowering early spring–fall.
Habitat: Mainly on sea bluffs
Elevation: 0-100 m

Distribution

V4 710-distribution-map.gif

Calif., Mexico (Baja California)

Discussion

The name Atriplex ramosissima was published by Moquin-Tandon as a synonym, based on a name on a specimen in Nuttall’s herbarium.

Selected References

None.

Lower Taxa

None.

"/2" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property.

... more about "Atriplex pacifica"
Stanley L. Welsh +
A. Nelson +
slippery +
aromatic +
subsessile +, sessile +  and monomorphic +
broadest +
Obione microcarpa +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
paler;greenish +
0.5 cm5 mm <br />0.005 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
oblanceolate +  and spatulate-elliptic or oval +
0.1 cm1 mm <br />0.001 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
persistent +  and deciduous +
reddish-brown +, black +, brown +  and green +
0 cm0 mm <br />0 m <br /> (?) +
cuneate +  and ovate or obovate +
not crested +
3-5-parted +
Pacific orach +
Calif. +  and Mexico (Baja California) +
0-100 m +
tuberculate +  and smooth +
pistillate +, spicate +  and staminate +
rarely +  and lacking +
unisexual +  and bisexual +
not +  and connate +
enlarged +
Mainly on sea bluffs +
bladderlike +
terminal +  and axillary +
deciduous +  and persistent +
not winged +  and winged +
3-5-toothed +
inferior +, half-inferior +  and superior +
crassinucellate +  and bitegmic +
campylotropous +
1 +  and single +
persistent +  and deciduous +
(1-)3-5-lobed +
papery +  and chartaceous +
Flowering early spring–fall. +
Proc. Biol. Soc. Wash., +
bulbous +  and taprooted +
fusiform +
fleshy +  and fibrous +
verrucate +  and striate +
light-brown +
flattened +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
cylindric +
3 +  and 5 +
opposite +  and alternate +
succulent +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
suborbiculate;obovate +
0 cm0 mm <br />0 m <br /> (0.03 cm0.3 mm <br />3.0e-4 m <br />) +
0.11 cm1.1 mm <br />0.0011 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
sessile +  and petiolate +
reduced;small +
horizontal +  and vertical +
verrucate +
Atriplex ramosissima +
Atriplex pacifica +
Atriplex subsect. Arenariae +
species +
dicotyledonous +
decumbent-ascending;erect +