Chenopodium chenopodioides

(Linnaeus) Aellen in C. Osten et al.
in C. Osten et al., Ostenia, 98. 1933.
Illustrated
Basionyms: Blitum chenopodioides Linnaeus Mant. Pl. 2: 170. 1771
Synonyms: Chenopodium botryodes Smith Chenopodium chenopodioides var. degenianum (Aellen) Aellen Chenopodium crassifolium
Treatment appears in FNA Volume 4. Treatment on page 282. Mentioned on page 276, 279.

Stems erect to prostrate, much-branched, 0.1–3.5 dm, glabrous. Leaves nonaromatic; petiole to 0.28 cm; blade deltate or narrowly deltate, 0.8–6 × 0.2–3.5 cm, base cuneate, margins entire or broadly dentate, apex acute to obtuse. Inflorescences lateral glomerules sessile on lateral branched spikes; glomerules subglobose, 3–4 mm diam.; bracts oblanceolate to linear, 0.2–1.5 cm. Flowers: perianth segments 3, connate almost to apex into 0.5–0.8 mm tube; lobes deltate, 0.1–0.5 × 0.3–0.4 mm, membranous, apex acute, flat or occasionally keeled-corniculate, glabrous, green and covering fruit at maturity; stamen 1; stigmas 2, 0.2 mm. Utricles ovoid; pericarp nonadherent, reticulate-punctate. Seeds vertical and horizontal, ovoid, 0.6–0.9 mm diam., margins rounded; seed coat black, smooth.


Phenology: Fruiting summer–fall.
Habitat: Borders of lakes and ponds, lake bottoms, in fields
Elevation: 100-2400 m

Distribution

V4 518-distribution-map.gif

Calif., Colo., Nev., Oreg., Utah, Wash., Wyo., South America.

Discussion

The name Chenopodium botryodes Smith was sometimes applied to C. chenopodioides because of uncertainty about the proper application and typification of the name Blitum chenopodioides Linnaeus. The recent publication by P. Uotila (2001) provides a reasonable solution by maintaining the traditional usage through neotypification of the Linnaean name.

Selected References

None.

Lower Taxa

None.

Steven E. Clemants +  and Sergei L. Mosyakin +
(Linnaeus) Aellen in C. Osten et al. +
Blitum chenopodioides +
Calif. +, Colo. +, Nev. +, Oreg. +, Utah +, Wash. +, Wyo. +  and South America. +
100-2400 m +
Borders of lakes and ponds, lake bottoms, in fields +
Fruiting summer–fall. +
in C. Osten et al., Ostenia, +
Illustrated +
Chenopodium botryodes +, Chenopodium chenopodioides var. degenianum +  and Chenopodium crassifolium +
Chenopodium chenopodioides +
Chenopodium sect. Pseudoblitum +
species +