Atriplex parishii var. persistens

(Stutz & G. L. Chu) S. L. Welsh

Rhodora 102: 423. 2001.

Common names: Refuge orach
EndemicConservation concern
Basionym: Atriplex persistens Stutz & G. L. Chu Madroño 40: 211, fig. 1. 1993
Treatment appears in FNA Volume 4. Treatment on page 358. Mentioned on page 356.

Stems erect or ascending, 1–2 dm; branches crowded, spreading, scurfy. Leaves alternate or opposite (within populations or on same plant), sessile; blade gray-green, ovate to ovatelanceolate, 2–4 × 1–3 mm, base cuneate to subcordate, margin entire, apex shortly acuminate, scurfy on both surfaces; bracteate leaves opposite or subopposite, some long villous hairs sometimes present. Staminate flowers in axillary glomerules near branch apices and/or in terminal spikes 0.5–4 cm, 4–5-merous; anthers reddish purple. Pistillate flowers commonly solitary in axils below staminate inflorescences or intermixed. Fruiting bracteoles persistent, ovate-oblong, slightly compressed, 3–4 × 2.5–3.5 (–4) mm, hardened to middle, with 1–2 irregular tuberculate appendages on each face, densely scurfy. Seeds redbrown, 1.2–1.5 mm wide.


Phenology: Flowering spring–fall.
Habitat: Saline or alkaline depressions or vernal pools
Elevation: 0-100 m

Discussion

Of conservation concern.

Atriplex depressa var. persistens grows with Atriplex fruticulosa, A. rosea, Downingia bella, Lasthenia fremontii, Cressa truxillensis, Eryngium castrense, Frankenia grandiflora, Psilocarpus brevissimus, other annual species, and Distichlis spicata. This taxon, with its persistent, thickened fruiting bracteoles, is probably most nearly allied to var. subtilis, which likewise has clinging fruiting bracteoles and at least a tendency toward concentration of staminate flowers at branch ends. Although it was described as having alternate leaves, a specimen from nearby the type locality, Hall 11006 (GH) taken in July of 1920, has leaves and foliose bracts of inflorescence clearly opposite. A note on the label of Hall 11759 (GH) states, “one plant with mostly opposite lvs; others with lvs. mostly alternate but a few on same plant plainly opposite.”

Selected References

None.

Lower Taxa

None.

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

reddish purple +
broadest +
tuberculate +
compressed +  and ovate-oblong +
Stanley L. Welsh +
(Stutz & G. L. Chu) S. L. Welsh +
slippery +
aromatic +
cuneate +  and subcordate +
Atriplex persistens +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
ovate +  and ovatelanceolate +
1mm;3mm +
persistent +  and deciduous +
reddish-brown +, black +, brown +  and green +
0 +  and 1/2 +
cuneate +  and ovate or obovate +
3-5-parted +
Refuge orach +
separated +  and imbricate +
0-100 m +
smooth +  and tuberculate +
pistillate +, 4-5-merous +  and staminate +
rarely +  and lacking +
unisexual +  and bisexual +
not +  and connate +
enlarged +
Saline or alkaline depressions or vernal pools +
bladderlike +
terminal +  and axillary +
bracteate +  and sessile +
subopposite +, opposite +  and alternate +
deciduous +  and persistent +
not winged +  and winged +
gray +  and white +
lobed +  and serrate-dentate +
subsessile +, sessile +  and monomorphic +
hastate +  and ovate +
inferior +, half-inferior +  and superior +
crassinucellate +  and bitegmic +
campylotropous +
1 +  and single +
persistent +  and deciduous +
(1-)3-5-lobed +
papery +  and chartaceous +
Flowering spring–fall. +
bulbous +  and taprooted +
fusiform +
fleshy +  and fibrous +
verrucate +  and striate +
flattened +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
tuberculate +
Endemic +  and Conservation concern +
cylindric +
3 (?) +  and 5 (?) +
opposite +  and alternate +
ascending +  and erect +
succulent +
sessile +  and petiolate +
reduced;small +
horizontal +  and vertical +
verrucate +
Obione parishii +
Atriplex parishii var. persistens +
Atriplex parishii +
variety +
0.5 cm5 mm <br />0.005 m <br /> (4 cm40 mm <br />0.04 m <br />) +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
lobed +, compressed +, rhombic +  and ovate +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
dicotyledonous +
spreading;prostrate +