Atriplex coronata

S. Watson

Proc. Amer. Acad. Arts 9: 114. 1874.

Common names: Wedgescale crownscale
Endemic
Synonyms: Atriplex elegans var. coronata (S. Watson) M. E. Jones Obione coronata (S. Watson) Ulbrich
Treatment appears in FNA Volume 4. Mentioned on page 359.

Herbs, erect or decumbent, 0.5–6 dm; branches terete, fructiferous almost to base, scurfy when young. Leaves alternate, subsessile or proximal short petiolate; blade ascending, oblong, oblong-ovate, or lanceolate to elliptic, 5–40 × 2–10 mm, thin, base acute to obtuse, margin entire, apex acute to acuminate. Flowers of both sexes in small axillary glomerules, 5-merous. Fruiting bracteoles almost sessile, broadly cuneate, 2–5 × (2–) 2.5–5 mm, united to summit, truncate at summit, sides smooth or obscurely tuberculate. Seeds light-brown to amber, 1–1.5 mm. 2n = 36.

Discussion

Varieties 3 (3 in the flora).

Although placed within the Atriplex argentea species complex by P. C. Standley (1916), this taxon appears more nearly allied to A. cordulata, differing mainly in leaf shape, round-ovate or deltoid-ovate to elliptic or lanceolate (not ovate to cordate-ovate), and markedly tuberculate faces of the fruiting bracteoles.

Selected References

None.

Key

1 Stems ± erect; body of fruiting bracteoles ± semicircular in profile, compressed or ± spheric; tubercles dense; marginal teeth ± equal. Atriplex coronata var. notatior
1 Stems decumbent to ascending; body of fruiting bracteoles approaching circular or flabellate in profile, ± compressed; tubercles usually few; marginal teeth unequal > 2
2 Fruiting bracteoles 2-4 mm; basal branches and leaves typically opposite. Atriplex coronata var. vallicola
2 Fruiting bracteoles (2-)4-5 mm; basal branches and leaves typically alternate Atriplex coronata var. coronata
... more about "Atriplex coronata"
Acute (?) +  and Acuminate (?) +
broadest +
Stanley L. Welsh +
S. Watson +
slippery +
aromatic +
acute +  and obtuse +
Pusillae +
0.5 cm5 mm <br />0.005 m <br /> (4 cm40 mm <br />0.04 m <br />) +
lanceolate +  and elliptic +
thin;2mm;10mm +
persistent +  and deciduous +
reddish-brown +, black +, brown +  and green +
0 +  and 1/2 +
cuneate +  and ovate or obovate +
3-5-parted +
Wedgescale +  and crownscale +
smooth +  and tuberculate +
rarely +  and lacking +
unisexual +  and bisexual +
not +  and connate +
enlarged +
bladderlike +
terminal +  and axillary +
deciduous +  and persistent +
not winged +  and winged +
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 +
Proc. Amer. Acad. Arts +
bulbous +  and taprooted +
fusiform +
fleshy +  and fibrous +
verrucate +  and striate +
flattened +
tuberculate;smooth +
cylindric +
3 (?) +  and 5 (?) +
opposite +  and alternate +
succulent +
sessile +  and petiolate +
reduced;small +
horizontal +  and vertical +
verrucate +
Atriplex elegans var. coronata +  and Obione coronata +
Atriplex coronata +
Atriplex subsect. Pusillae +
species +
dicotyledonous +