Flora of North America species comparison

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Atriplex coronata

Atriplex sect. Obione

crownscale, wedgescale
Habit Herbs, erect or decumbent, 0.5–6 dm; branches terete, fructiferous almost to base, scurfy when young. Plants usually annual, usually monoecious.
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.

with Kranz anatomy.
Flowers

of both sexes in small axillary glomerules, 5-merous.

Staminate flowers

with calyx lobes not crested.
Pistillate flowers

lacking or rarely with a perianth (in A. covillei), enclosed by a pair of bracteoles.
Seeds

light brown to amber, 1–1.5 mm.

radicle lateral or superior.
Fruiting

bracteoles almost sessile, broadly cuneate, 2–5 × (2–)2.5–5 mm, united to summit, truncate at summit, sides smooth or obscurely tuberculate.

Bracteoles

cuneate to ovate or obovate, united at least to 1/2 of length, faces with tubercles or crests or smooth.
2n

= 36.

Atriplex coronata

Atriplex sect. Obione
Distribution
from FNA
CA
[WildflowerSearch map]
[BONAP county map]
United States; Mexico
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.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Species 28 (23 in the flora).

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Key
1. Stems ± erect; body of fruiting bracteoles ± semicircular in profile, compressed or ± spheric; tubercles dense; marginal teeth ± equal.
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.
var. vallicola
2. Fruiting bracteoles (2-)4-5 mm; basal branches and leaves typically alternate
var. coronata
Source FNA vol. 4. FNA vol. 4, p. 346.
Parent taxa Chenopodiaceae > Atriplex > subg. Obione > sect. Obione > subsect. Pusillae Chenopodiaceae > Atriplex > subg. Obione
Sibling taxa
A. acanthocarpa, A. amnicola, A. argentea, A. californica, A. canescens, A. confertifolia, A. cordulata, A. corrugata, A. coulteri, A. covillei, A. dioica, A. elegans, A. fruticulosa, A. gardneri, A. garrettii, A. glabriuscula, A. gmelinii, A. graciliflora, A. heterosperma, A. holocarpa, A. hortensis, A. hymenelytra, A. joaquiniana, A. klebergorum, A. laciniata, A. lentiformis, A. leucophylla, A. lindleyi, A. linearis, A. littoralis, A. matamorensis, A. mucronata, A. nudicaulis, A. nummularia, A. oblongifolia, A. obovata, A. pacifica, A. parishii, A. parryi, A. patula, A. pentandra, A. phyllostegia, A. pleiantha, A. polycarpa, A. powellii, A. prostrata, A. pusilla, A. rosea, A. saccaria, A. semibaccata, A. serenana, A. spinifera, A. suberecta, A. suckleyi, A. tatarica, A. torreyi, A. truncata, A. tularensis, A. watsonii, A. wolfii, A. wrightii
Subordinate taxa
A. coronata var. coronata, A. coronata var. notatior, A. coronata var. vallicola
Synonyms A. elegans var. coronata, Obione coronata
Name authority S. Watson: Proc. Amer. Acad. Arts 9: 114. (1874) unknown
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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