Dysphania aristata

(Linnaeus) Mosyakin & Clemants

Ukrayins’k. Bot. Zhurn., n. s. 59: 383. 2002.

Introduced
Basionym: Chenopodium aristatum Linnaeus Sp. P l. 1: 221. 1753
Treatment appears in FNA Volume 4. Treatment on page 273. Mentioned on page 269.

Stems erect, [very bushy-branched] profusely branched from base to ± simple, [0.4–] 0.7–2.5 [–5] dm, glabrous or with scattered inflated hairs and uniseriate nonglandular trichomes, especially towards base. Leaves nonaromatic; petiole to 0.4 mm; blade [0.8–] 2.8–3.4 [–4.1] × 0.1–0.3 [–0.6] cm, base attenuate, margins entire (to occasionally shallowly erose-dentate), apex acute, mucronate, glabrous adaxially. Inflorescences a terminal thyrse, 2.2–4.5 [–13] cm, or lax, pyramidal cymes, bearing flowers almost from base; bracts absent. Flowers: perianth segments 5, distinct nearly to base, distinct portions obovate to elliptic or ovate, with low tubercle or sometimes keeled abaxially, 0.5–0.7 × 0.3–0.4 mm, apex obtuse to subacute, glabrous, loosely covering fruit at maturity; stamens 5 (or absent in pistillate flowers in distal portion of inflorescence); stigmas 2. Achenes subglobose; pericarp adherent, membranaceous, finely granular. Seeds subglobose, 0.5–0.8 × 0.4–0.5 mm, margins rimmed; seed-coat smooth.


Phenology: Fruiting late summer–fall.
Habitat: Waste areas, sandy soils
Elevation: 0-500 m

Distribution

V4 500-distribution-map.gif

Introduced; Mich., N.Y., native to Asia, in s, se Europe

Discussion

Selected References

None.

Lower Taxa

None.

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

... more about "Dysphania aristata"
subglobose +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
Obtuse (?) +  and Subacute (?) +
0.3mm;0.4mm +
corniculate +
Steven E. Clemants +  and Sergei L. Mosyakin +
(Linnaeus) Mosyakin & Clemants +
slippery +
aromatic +
attenuate +
Chenopodium aristatum +
3.4 cm34 mm <br />0.034 m <br /> (4.1 cm41 mm <br />0.041 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
2.8 cm28 mm <br />0.028 m <br /> (3.4 cm34 mm <br />0.034 m <br />) +
lobed +, elliptic +, ovate +, oblanceolate +, lanceolate +  and linear +
0.1cm;0.3cm +
persistent +  and deciduous +
reddish-brown +, black +, brown +  and green +
pyramidal +
Mich. +, N.Y. +, native to Asia +, in s +  and se Europe +
0-500 m +
symmetric +, or +  and uniseriate +
unisexual +  and bisexual +
aromatic +
glabrescent +
Waste areas, sandy soils +
inflated +
compound +  and simple +
4.5 cm45 mm <br />0.045 m <br /> (13 cm130 mm <br />0.13 m <br />) +
2.2 cm22 mm <br />0.022 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
nonaromatic +
reduced +
not winged +  and winged +
deeply pinnatifid +  and nearly entire +
crassinucellate +  and bitegmic +
campylotropous +
1 +  and single +
persistent +  and deciduous +
with corniculate appendage +  and keeled +
membranaceous +
0 cm0 mm <br />0 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
Fruiting late summer–fall. +
Ukrayins’k. Bot. Zhurn., n. s. +
pointing +  and ascending +
basal +, median +  and position +
bulbous +  and taprooted +
fusiform +
fleshy +  and fibrous +
smooth +  and rugose +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
subglobose +
0.04 cm0.4 mm <br />4.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
Introduced +
cylindric +
opposite +  and alternate +
prostrate +  and decumbent +
not fleshy +
filiform +
sessile +  and petiolate +
reduced;small +
horizontal +  and vertical +
verrucate +
Dysphania aristata +
Dysphania subsect. Teloxys +
species +
bristlelike +
polygamous +, dioecious +  and monoecious +