Chenopodium glaucum L.

Oakleaf goosefoot (en), Chénopode glauque (fr), Oxybaside glauque (fr), Oxybasis glauque (fr)

Species

Angiosperms > Caryophyllales > Amaranthaceae > Chenopodium

Characteristics

Herbs annual, 20-40 cm tall. Stem decumbent or diffuse, green or purple-red striate, ribbed. Petiole 5-10 mm; leaf blade oblong-ovate to lanceolate, 2-4 × 0.6-2 cm, fleshy, abaxially gray-white farinose, sometimes slightly reddish purple, adaxially glabrous, base attenuate, margin irregularly erose to dentate (sometimes indistinctly lobed), apex acute or obtuse; midvein prominent, yellow-green. Flowers bisexual and female, usually several per glomerule, arranged on branches in spicate or paniculate inflorescences (and/or in axillary glomerules), these shorter than leaves and interrupted. Perianth segments 3 or 4, light green, narrowly oblong or obovate-lanceolate, less than 1 mm, slightly succulent, usually not farinose, apex usually obtuse. Stamens 1 or 2; filaments not exserted from perianth; anthers globose. Stigmas 2, very short. Utricle protruding from perianth; pericarp yellow-white, membranous. Seed horizontal, oblique, or vertical, dark brown or red-brown, compressed globose, ca. 0.75 mm in diam., pitted, rim margin obtuse. Fl. and fr. May-Oct.
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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.
Prostrate or semi-prostrate annual herb, with young parts farinose, often reddish or purplish, sometimes green. Stems to 20-(30) cm long, slender, branched. Petioles 5-15-(18) mm long. Lamina 3-20-(55) × 2-18-(60) mm (including basal lobes), rhombic-ovate, narrow-elliptic, ± succulent, becoming efarinose and green or reddish above, nearly always glaucous-white-farinose beneath, entire, with few dentate teeth or sometimes basally lobed on each side; base cuneate. Glomerules few-flowered, axillary and terminal, sometimes spike-like, otherwise leafy to apex. Perianth segments 3-4-(5), broadly ovate, generally reddish except for margin, green or brownish at fruiting, membranous, not very accrescent, scarcely investing fr. Seed mostly horizontal, (0.8)-1-1.3-(1.6) mm diam., circular, compressed; margin obtuse; pericarp easily removed; testa glossy black, finely striated.
Prostrate to erect annual to 0.5 m high, branching from base. Leaves slightly fleshy, elliptic to deltoid, entire or sinuately lobed, obtuse; lamina 1–3 cm long, passing into a petiole c. half as long, glabrous above, densely mealy below. Infloresence of compact glomerules arranged in paniculate cymes. Flowers glabrous; terminal flowers bisexual, the tepals 3 or 4, rarely 5, free, the stamens 1–4, rarely 5, seed horizontal; lateral flowers female or bisexual, the tepals 3, rarely 4, stamen 0 or 1, seed erect. Pericarp thin, free or almost so, somewhat green. Seed discoid with rounded margin, c. 1 mm diam.; testa reticulate, smooth or finely pitted, reddish brown to black; embryo circular.
Annual, usually branched from the base, prostrate to erect, 1–4 dm; lvs lanceolate to oblong or ovate, 1–4 cm, cuneate at base, entire or merely undulate, or with 2–4 low teeth per side, densely white-mealy beneath, especially when young; fls in small glomerules aggregated into usually interrupted spiciform clusters equaling or shorter than the lvs, or also in a short terminal panicle; sep mostly 3(4); seeds dark brown, shining, lenticular, 0.6–1 mm wide, loose in the pericarp, those of the lateral fls of the cymules erect, that of the terminal fl in the cymule horizontal; 2n=28. Native of Europe, occasionally found as a weed in our range, especially northward. (C. salinum)
An annual herb. It can be 20-40 cm tall but branches can be 80 cm long. The leaves are fleshy and 5-40 mm long. There are teeth along the edge. The upper surface is smooth and dark green. The lower surface is white with dense hairs. The flowers are small and pale green. They form dense clusters in the axils of leaves.
Life form annual
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination anemogamy
Spread -
Mature width (meter) -
Mature height (meter) 0.25 - 0.35
Root system -
Rooting depth (meter) -
Root diameter (meter) 0.1
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color
Fruiting months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Nitrogen fixer -
Photosynthetic pathway

Environment

It is a temperate plant. It grows near the high water mark especially on cobble shores. It often grows on slightly salty or alkaline soils. Tasmania Herbarium.
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Rich waste ground, rarely by the sea-shore, in Britain.
Occurs in muddy eutrophic conditions.
Light 6-9
Soil humidity 1-7
Soil texture 2-5
Soil acidity 3-7
Soil nutriment -
Hardiness (USDA) 5-8

Usage

The leaves can be eaten in small amounts. The seeds can be eaten after being soaked overnight to remove saponins.
Uses dye fodder
Edible leaves saps seeds shoots
Therapeutic use -
Human toxicity toxic (seed), toxic (leaf)
Animal toxicity -

Cultivation

Can be grown by seedlings.
Mode seedlings
Germination duration (days) -
Germination temperacture (C°) -
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -29
Optimum temperature (C°) 16 - 28
Size -
Vigor -
Productivity -

Images

Chenopodium glaucum unspecified picture

Distribution

Chenopodium glaucum world distribution map, present in Australia, China, France, New Zealand, Pakistan, and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:164954-1
WFO ID wfo-0000601315
COL ID TXDL
BDTFX ID 16812
INPN ID 90732
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Agathophytum glaucum Chenopodium glaucum Blitum glaucum Botrys glauca Chenopodium ambiguum Chenopodium pallidum Chenopodium wolffii Orthosporum glaucum Atriplex glauca Orthospermum glaucum Chenopodium littorale Chenopodium nudiflorum Chenopodium prostratum Chenopodium ambiguum var. majus Chenopodium ambiguum var. minus Chenopodium glaucum var. ambiguum Chenopodium glaucum subsp. ambiguum Chenopodium glaucum var. divaricatum Chenopodium glaucum var. littorale Chenopodium glaucum f. minus Chenopodium glaucum var. divaricatum Chenopodium glaucum subsp. marlothianum Chenopodium glaucum var. glaucum