Difference between revisions of "Dysphania aristata"
Ukrayins’k. Bot. Zhurn., n. s. 59: 383. 2002.
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|genus=Dysphania | |genus=Dysphania | ||
|section=Dysphania sect. Botryoides | |section=Dysphania sect. Botryoides | ||
Latest revision as of 21:58, 5 November 2020
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 non-aromatic; 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
Introduced; Mich., N.Y., native to Asia, introduced in s, se Europe.
Discussion
Selected References
None.