Chenopodium strictum


Nov. Pl. Sp., 180. 1821.

Synonyms: Chenopodium album var. microphyllum Boenninghausen Chenopodium album subsp. striatum (Krašan) Murr Chenopodium album var. striatum Krašan Chenopodium betaceum (Krašan) Murr Chenopodium striatiforme Chenopodium striatum Chenopodium strictum subsp. striatiforme (Murr) Uotila
Treatment appears in FNA Volume 4. Mentioned on page 277, 278, 296, 297.

Stems erect, branched, 4.5–10 dm, glabrous to sparsely farinose. Leaves nonaromatic, sessile; proximal blades oblong-ovate to ovate lanceolate, 1.7–3.6 × 1–2.8 cm, base cuneate, margins finely serrate; distal blades tending toward lanceolate and margins entire, apex obtuse, farinose. Inflorescences glomerules in terminal moniliform spikes, 1–3 cm; glomerules globose, 1.8–2 mm diam.; bracts absent. Flowers: perianth segments 5, distinct nearly to base; lobes ovate, 0.5–0.7 × 0.6–0.7 mm, apex rounded, farinose, slightly keeled, reflexed and exposing fruit at maturity; stamens 5; stigmas 2, 0.2 mm. Achenes depressed-ovoid; pericarp adherent, smooth. Seeds lenticular, oval, 0.9–1.5 mm diam.; seed coat black, smooth, margins rounded. 2n = 36.

Phenology: Fruiting fall.
Habitat: Disturbed, weedy areas
Elevation: 0-600 m


Introduced; B.C., Man., Ont., P.E.I., Que., Sask., Ariz., Ark., Calif., Colo., Conn., Fla., Iowa, Kans., Maine, Mass., Mich., Minn., Mo., Nebr., N.H., N.J., N.Y., N.Dak., Pa., R.I., S.Dak., Vt., Wash., native se Europe, s, c Asia.


Presumed native American plants of Chenopodium strictum were recognized as a separate species, subspecies, or variety [C. glaucophyllum Aellen; C. strictum subsp. glaucophyllum (Aellen) Aellen; C. strictum var. glaucophyllum (Aellen) Wahl]. These plants are very variable, and usually have broader leaves and more lax inflorescences, which might be a result of hybridization with other species of the C. album aggregate. The native status of such forms is very questionable. Typical C. strictum also occurs in North America, but seems to be less common. Some narrow species and hybrids of the C. strictum aggregate are recognized in Eurasia (P. Aellen 1928; F. Dvo ák 1989; P. Uotila 1977, 1993, 1997). Some of these taxa, especially C. striatiforme Murr and C. novopokrovskyanum (Aellen) Uotila, are superficially similar to the native North American taxa of subsect. Leptophylla. Eurasian forms of the C. strictum group usually can be distinguished by their venation pattern (in most cases more than three visible veins even in narrowest leaves). Considering the likely alien status and wide variability of C. strictum in North America, no attempt is made here to subdivide it into infraspecific entities.

Selected References


Lower Taxa

... more about "Chenopodium strictum"
Steven E. Clemants +  and Sergei L. Mosyakin +
B.C. +, Man. +, Ont. +, P.E.I. +, Que. +, Sask. +, Ariz. +, Ark. +, Calif. +, Colo. +, Conn. +, Fla. +, Iowa +, Kans. +, Maine +, Mass. +, Mich. +, Minn. +, Mo. +, Nebr. +, N.H. +, N.J. +, N.Y. +, N.Dak. +, Pa. +, R.I. +, S.Dak. +, Vt. +, Wash. +, native se Europe +, s +  and c Asia. +
0-600 m +
Disturbed, weedy areas +
Fruiting fall. +
Nov. Pl. Sp., +
Weedy +, Introduced +  and Illustrated +
Chenopodium album var. microphyllum +, Chenopodium album subsp. striatum +, Chenopodium album var. striatum +, Chenopodium betaceum +, Chenopodium striatiforme +, Chenopodium striatum +  and Chenopodium strictum subsp. striatiforme +
Chenopodium strictum +
Chenopodium subsect. Chenopodium +
species +