Chenopodium album

L. (1753)

This name is accepted

Kingdom: Viridiplantae Phylum: Magnoliophyta Class/Clade: Eudicot-CoreEudicot Order: Caryophyllales Family: Amaranthaceae Genus: Chenopodium

goosefoot, lamb's quarters, pakapakai (Ni‘ihau via St. John), pigweed

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Description

Key Characters:

Growth Form: Annual herbs.

Stems: Stems erect, 5–10(–15) dm long, with a usually stout central stem and ascending lateral branches, mealy pubescent or glabrate.

Roots:

Leaves: Leaves simple. Alternate. Blades variable, often rhombic–ovate to lanceolate, more than 1.5 times longer than wide, 3–6 cm long, 2–3 (–4) cm wide. Apex acute to obtuse. Base narrowly to broadly cuneate. Surfaces moderately to densely mealy. Margins irregularly sinuate–dentate to entire. Petioles ca. 0.5–4 cm long. Stipules absent.

Flowers: Flowers in dense glomerules grouped into dense, nearly leafless, paniculate spikes. Flowers bisexual (perfect), small. Calyx (3–)5-lobed, ca. 1 mm long, completely enclosing the fruit at maturity, the lobes ovate, weakly or not keeled, mealy pubescent, margins scarious, persistent. Corolla (petals) absent. Stamens 1–5; anthers dithecal, opening by longitudinal slits. Ovary superior, 2–3(–5)-carpellate, 1-celled, placentation basal; ovule 1; styles 2–5; stigmas dry.

Fruit: Utricles. Seeds 1 per fruit; horizontal; 1.1–1.5 mm in diameter; margins obtuse; pericarp lightly roughened; not alveolate; usually attached to the seed.

Ploidy: 2n = 18; 36; 54

Habitat:

Elevation Range:

Historical Distribution

Images

Synonyms (137)

Uses and Culture

USES

Natural History

Statewide Status

Naturalized

Island Status

O'ahu Naturalized
Maui Naturalized
Hawai'i Naturalized

Dispersal Agents


Pollinators

Bibliography

Name Published In: Sp. Pl.: 219 (1753)

Other References

Wagner et al. 1990:537 (EM); Staples et al. 2002:7 (H); Oppenheimer 2003:9 (WM); Ross & Faccenda 2023b:201, 203 (O, KEY)

Occurrences

SNo. Scientific Name Locality Habitat Basis of Record Description Recorded By Record Number Island Source Date
1 Chenopodium album E Maui, Makawao District, Kula, Kaonoulu, mauka of Rice Park Locally common along disturbed rural roadside Preserved_Specimen Upright herbs to 1m tall; stems purple Oppenheimer, H.L. 30902 Maui BISH 2009-03-07
2 Chenopodium album East Maui, Kula A roadside and garden weed. Preserved_Specimen Hobdy, R.W. 2595 Maui BISH 1986-07-01
3 Chenopodium album East Maui, Kula Along highway. Preserved_Specimen Hobdy, R.W. 2634 Maui BISH 1986-10-08
4 Chenopodium album East Maui, Kula Along highway. Preserved_Specimen Hobdy, R.W. 2634 Maui BISH 1986-10-08
5 Chenopodium album S. Kohala, pasture near base of Nohonaohae cinder cone grasses, Malva parviflora Preserved_Specimen parts dark red Davis, J. 721 Hawaii BISH 1982-04-05
6 Chenopodium album Western slope of Mauna Kea, west of Puu Laau Growing in understory of very open Sophora/Myoporum forest, along with Lepidium, Bromus, Plantago, Senecio madagascariensis. Preserved_Specimen Common herb in the area. Imada, C. 200021 Hawaii BISH 2000-09-23
7 Chenopodium album East Maui, Kula Along highway. Preserved_Specimen Hobdy, R.W. 2634 Maui BISH 1986-10-08
8 Chenopodium album South Kohala District. Collected east of Queen Kaahumanu Highway between Mauna Lani Drive and Puako turn off Dry area with scant vegetation; open grassland with scattered Prosopis pallida. Preserved_Specimen Funk, E.J. Hawaii BISH 1991-02-04
9 Chenopodium album East Maui, Kula District A weed along roadsides and farm fields. Preserved_Specimen Erect with several short branches, 1-1.7 M tall. Hobdy, R.W. 2573 Maui BISH 1986-06-19
10 Chenopodium album W Maui, Lahaina District, Honolua, between Honolua Valley and Mokupea Gulch, N of Puu Kaeo Growing in pasture. Preserved_Specimen Oppenheimer, H.L. 60156 Maui BISH 2001-06-27
11 Chenopodium album East Maui, Kula Preserved_Specimen A roadside and garden weed. Hobdy, R.W. 2595 Maui BISH 1986-07-01
12 Chenopodium album Kula Preserved_Specimen Herbst, D.R. Maui BISH 1985-11-06
13 Chenopodium album Kekaulike Hwy., margin of gulch Preserved_Specimen Plants up to 1m. tall. Wagner, W.L. 5673 Maui BISH 1986-07-12
14 Chenopodium album East Maui, Kula Preserved_Specimen A roadside and garden weed. Hobdy, R.W. 2595 Maui BISH 1986-07-01
15 Chenopodium album East Maui, Kula District Preserved_Specimen Hobdy, R.W. 2598 Maui BISH 1986-07-01
16 Chenopodium album East Maui, Kula District Preserved_Specimen Hobdy, R.W. 2597 Maui BISH 1986-07-01
17 Chenopodium album East Maui, Kula District Preserved_Specimen Hobdy, R.W. 2596 Maui BISH 1986-07-01
18 Chenopodium album East Maui, Kula District Preserved_Specimen A roadside weed. Hobdy, R.W. 2633 Maui BISH 1986-10-08