Chenopodium strictum

Roth

Nov. Pl. Sp., 180. 1821.

WeedyIntroducedIllustrated
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

Distribution

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

Discussion

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

None.

Lower Taxa

None.

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

... more about "Chenopodium strictum"
dehiscent +  and indehiscent +
depressed-ovoid +
Keeled (?) +, Rounded (?) +  and Obtuse (?) +
Steven E. Clemants +  and Sergei L. Mosyakin +
slippery +
aromatic +
cuneate +
flattened +, rhombic +, trullate +, triangular +, ovate +, lanceolate +, oblong +  and linear +
persistent +  and deciduous +
reddish-brown +, black +, brown +  and green +
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 +
hippocrepiform +  and annular +
symmetric +, or +  and uniseriate +
dehiscent +  and indehiscent +
0.18 cm1.8 mm <br />0.0018 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Disturbed, weedy areas +
small white +
inflated +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
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 />) +
0.6mm;0.7mm +
not winged +  and winged +
entire +  and serrate +
rounded +  and lanceolate +
crassinucellate +  and bitegmic +
campylotropous +
1 +  and single +
persistent +  and deciduous +
chartaceous +  and membranaceous +
Fruiting fall. +
1.7 cm17 mm <br />0.017 m <br /> (3.6 cm36 mm <br />0.036 m <br />) +
oblong-ovate +  and ovate-lanceolate +
1 cm10 mm <br />0.01 m <br /> (2.8 cm28 mm <br />0.028 m <br />) +
Nov. Pl. Sp., +
pointing +  and ascending +
bulbous +  and taprooted +
fusiform +
fleshy +  and fibrous +
reticulate +  and smooth +
honeycombed +  and smooth +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (?) +  and 0.15 cm1.5 mm <br />0.0015 m <br /> (?) +
oval +  and lenticular +
Weedy +, Introduced +  and Illustrated +
cylindric +
not imbricate +
keeled +  and rounded +
opposite +  and alternate +
not fleshy +
filiform +
0.2 cm2 mm <br />0.002 m <br /> (?) +  and 2 cm20 mm <br />0.02 m <br /> (?) +
sessile +  and petiolate +
reduced;small +
horizontal +  and vertical +
verrucate +
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 +
dehiscent +  and indehiscent +
glabrous +  and pubescent +
polygamous +, dioecious +  and monoecious +
not imbricate +
keeled +  and rounded +