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.

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.

"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 +
1mm;8mm +
persistent +  and deciduous +
reddish-brown +, black +, brown +  and green +
0 +  and 1/2 +
cuneate +  and ovate or obovate +
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 +
flattened +
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 />) +
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 +