Chenopodium incanum

(S. Watson) A. Heller

Pl. World 1: 23. 1897.

WeedyIllustrated
Basionym: Chenopodium fremontii var. incanum S. Watson Proc. Amer. Acad. Arts 9: 94. 1874
Treatment appears in FNA Volume 4. Treatment on page 291. Mentioned on page 277.

Stems erect to spreading, branched from base or simple, 0.6–7.5 dm, farinose. Leaves nonaromatic; petiole 0.5–1 cm; blade broadly triangular to broadly ovate, distal leaves narrowly triangular to narrowly ovate, 1–1.5 (–2.3) × 0.5–1.6 cm, thin or thick, base cuneate to subtruncate, margins usually with two basal teeth or lobes, teeth or lobes acute to acuminate, obtuse, or rounded, apex rounded, obtuse, or acute, farinose abaxially. Inflorescences glomerules in terminal and lateral panicles, 3.5–12 × 1–7 cm; glomerules maturing mixed; bracts absent. Flowers: perianth segments 5, distinct nearly to base; lobes ovate, 0.8–1.1 × 0.7–1 mm, apex acute to obtuse, keeled or not, farinose, completely covering fruit at maturity; stamens 5; stigmas 2, 0.2 mm. Utricles ovoid; pericarp nonadherent, smooth. Seeds round, 0.9–1.25 mm diam., margins rounded with a narrow rim; seed-coat dark black, wrinkled. 2n = 18.

Distribution

V4 550-distribution-map.gif

Alta., Sask., Ariz., Calif., Colo., Kans., N.Mex., Nebr., Nev., Okla., S.Dak., Tex., Utah, Wyo.

Discussion

Varieties 3 (3 in the flora).

Selected References

None.

Key

1 Plants densely branching from base, branches spreading to ascending, 0.6-1.5(-3) dm; leaf blade apices and basal teeth. Chenopodium incanum var. incanum
1 Plants erect or spreading, unbranched or branching from base with erect ascending branches, 1-2.5 dm; leaf blade apices and basal teeth rounded, obtuse, or occasionally acute > 2
2 Plants erect or spreading, 1-3.5 dm Chenopodium incanum var. occidentale
2 Plants erect, 2.5-7.5 dm Chenopodium incanum var. elatum

"narrower" is not a number.No values specified."thick" is not a number. "thin" is not a number."dm" is not declared as a valid unit of measurement for this property.

... more about "Chenopodium incanum"
dehiscent +  and indehiscent +
Not (?) +, Keeled (?) +, Acute (?) +  and Obtuse (?) +
Steven E. Clemants +  and Sergei L. Mosyakin +
(S. Watson) A. Heller +
slippery +
aromatic +
cuneate +  and subtruncate +
Chenopodium fremontii var. incanum +
broadly triangular +  and broadly ovate +
persistent +  and deciduous +
reddish-brown +, black +, brown +  and green +
1.5 cm15 mm <br />0.015 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
narrowly triangular;narrowly ovate +
Alta. +, Sask. +, Ariz. +, Calif. +, Colo. +, Kans. +, N.Mex. +, Nebr. +, Nev. +, Okla. +, S.Dak. +, Tex. +, Utah +  and Wyo. +
hippocrepiform +  and annular +
symmetric +, or +  and uniseriate +
dehiscent +  and indehiscent +
small white +
inflated +
3.5 cm35 mm <br />0.035 m <br /> (12 cm120 mm <br />0.12 m <br />) +
1 cm10 mm <br />0.01 m <br /> (7 cm70 mm <br />0.07 m <br />) +
sessile +  and petiolate +
nonaromatic +
not fleshy +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.11 cm1.1 mm <br />0.0011 m <br />) +
ovate +, acute +  and acuminate obtuse or rounded +
0.7mm;1mm +
not winged +  and winged +
with pair +  and entire +
farinose +  and glabrous +
rounded +, acute +  and acuminate obtuse or rounded +
crassinucellate +  and bitegmic +
campylotropous +
1 +  and single +
persistent +  and deciduous +
nonadherent +
chartaceous +  and membranaceous +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
pointing +  and ascending +
bulbous +  and taprooted +
fusiform +
fleshy +  and fibrous +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (?) +  and 0.125 cm1.25 mm <br />0.00125 m <br /> (?) +
Weedy +  and Illustrated +
cylindric +
not imbricate +
keeled +  and rounded +
simple +  and branched +
opposite +  and alternate +
erect +  and spreading +
not fleshy +
filiform +
0.2 cm2 mm <br />0.002 m <br /> (?) +  and 2 cm20 mm <br />0.02 m <br /> (?) +
sessile +  and petiolate +
reduced;small +
horizontal +  and vertical +
verrucate +
Chenopodium incanum +
Chenopodium subsect. Fremontia +
species +
acute +  and acuminate obtuse or rounded +
dehiscent +  and indehiscent +
glabrous +  and pubescent +
polygamous +, dioecious +  and monoecious +
not imbricate +
keeled +  and rounded +