Chenopodium glaucum

Linnaeus

Sp. Pl. 1: 220. 1753.

Common names: Oak-leaf goosefoot
Illustrated
Treatment appears in FNA Volume 4. Treatment on page 283. Mentioned on page 276, 279.

Stems erect to prostrate, branched from base, 0.5–2.5 (–4) dm, farinose. Leaves nonaromatic; petiole to 1 cm; blade lanceolate to oblong or ovate, 0.5–4 × 0.3–1.5 cm, base cuneate, margins undulate-dentate, teeth obtuse or acute, apex obtuse or acute, densely farinose, glaucous abaxially. Inflorescences glomerules in terminal or lateral spikes, 5–10 cm; glomerules subglobose, 1.8–2.5 mm diam.; bracts leaflike in inflorescence, elliptic, 0.2–1 × 0.1–0.5 cm, or absent at least in terminal 1/2 of inflorescence. Flowers: perianth segments 3–4; lobes obovate to oblong, 0.5–0.7 × 0.4–0.5 mm, apex obtuse, rounded, not keeled, covering fruit at maturity; stamen 1; stigmas 2. Utricles ovoid; pericarp nonadherent, smooth. Seeds mostly horizontal, some vertical, margins rounded; vertical seeds ovoid to round, 0.6–1.1 mm diam.; horizontal seeds round, 0.6–1.1 mm diam.; seed-coat reddish-brown, rugose-punctate. 2n = 18.

Distribution

V4 523-distribution-map.gif

Alta., B.C., Man., N.B., N.S., N.W.T., Ont., P.E.I., Que., Sask., Yukon, Alaska, Ariz., Calif., Colo., Conn., Del., Fla., Idaho, Ill., Ind., Iowa, Kans., Ky., Maine, Mass., Md., Mich., Minn., Mo., Mont., N.Dak., N.H., N.J., N.Mex., N.Y., Nebr., Nev., Ohio, Oreg., Pa., R.I., S.Dak., Utah, Va., Vt., W.Va., Wash., Wis., Wyo., Asia

Discussion

Varieties 3 or more (2 in the flora).

Several entities (segregate species, subspecies, varieties, and forms) have been described within the Chenopodium glaucum group. Most of the taxa represent morphological traits of individual or ecological variability and have little or no taxonomic importance. However, several entities are well delimited geographically. The native North American taxon is recognized here as a separate variety.

Selected References

None.

Key

1 Inflorescences without leaflike bracts, at least on terminal 1/2; leaf blade apices obtuse; vertical seeds 0.6-0.9 mm Chenopodium glaucum var. glaucum
1 Inflorescences with leaflike bracts throughout; leaf blade apices acute; vertical seeds 0.9-1.1 mm Chenopodium glaucum var. salinum

"dm" is not declared as a valid unit of measurement for this property.

... more about "Chenopodium glaucum"
dehiscent +  and indehiscent +
glaucous +  and farinose +
Not keeled (?) +, Rounded (?) +, Obtuse (?) +  and Acute (?) +
Steven E. Clemants +  and Sergei L. Mosyakin +
Linnaeus +
slippery +
aromatic +
cuneate +
Undefined subg. Blitum +
0.5 cm5 mm <br />0.005 m <br /> (4 cm40 mm <br />0.04 m <br />) +
lanceolate +  and oblong or ovate +
0.3cm;1.5cm +
persistent +  and deciduous +
0.2 cm2 mm <br />0.002 m <br /> (?) +  and 1 cm10 mm <br />0.01 m <br /> (?) +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
reddish-brown +, black +, brown +  and green +
Oak-leaf goosefoot +
Alta. +, B.C. +, Man. +, N.B. +, N.S. +, N.W.T. +, Ont. +, P.E.I. +, Que. +, Sask. +, Yukon +, Alaska +, Ariz. +, Calif. +, Colo. +, Conn. +, Del. +, Fla. +, Idaho +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, Maine +, Mass. +, Md. +, Mich. +, Minn. +, Mo. +, Mont. +, N.Dak. +, N.H. +, N.J. +, N.Mex. +, N.Y. +, Nebr. +, Nev. +, Ohio +, Oreg. +, Pa. +, R.I. +, S.Dak. +, Utah +, Va. +, Vt. +, W.Va. +, Wash. +, Wis. +, Wyo. +  and Asia +
hippocrepiform +  and annular +
symmetric +, or +  and uniseriate +
dehiscent +  and indehiscent +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
subglobose +
small white +
inflated +
5 cm50 mm <br />0.05 m <br /> (10 cm100 mm <br />0.1 m <br />) +
sessile +  and petiolate +
nonaromatic +
not fleshy +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
obovate +  and oblong +
0.4mm;0.5mm +
not winged +  and winged +
crassinucellate +  and bitegmic +
campylotropous +
1 +  and single +
persistent +  and deciduous +
nonadherent +
chartaceous +  and membranaceous +
0 cm0 mm <br />0 m <br /> (1 cm10 mm <br />0.01 m <br />) +
pointing +  and ascending +
bulbous +  and taprooted +
fusiform +
fleshy +  and fibrous +
reddish-brown +
verrucate +  and striate +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (?) +  and 0.11 cm1.1 mm <br />0.0011 m <br /> (?) +
horizontal +  and vertical +
round +  and ovoid +
Illustrated +
cylindric +
not imbricate +
keeled +  and rounded +
opposite +  and alternate +
erect +  and prostrate +
not fleshy +
filiform +
0.1 cm1 mm <br />0.001 m <br /> (?) +
sessile +  and petiolate +
reduced;small +
horizontal +  and vertical +
verrucate +
Chenopodium glaucum +
Chenopodium sect. Glauca +
species +
acute +  and obtuse +
dehiscent +  and indehiscent +
glabrous +  and pubescent +
polygamous +, dioecious +  and monoecious +
not imbricate +
keeled +  and rounded +