Nomenclature
Scientific Name:
Chenopodium giganteum D.Don (1825)
 Description

Erect annual herb to  c. 1 m tall, non-aromatic, eglandular;  young parts farinose with the vesicular hairs light violet-purple, becoming efarinose. Petiole to 9 cm long, often purple;  lamina 1–3× petiole, 4–11–(16) × 4–11–(12) cm, broadly triangular, sometimes almost rhombic, coarsely and irregularly dentate;  teeth acute;  base broad-cuneate to truncate;  apex obtuse, mucronate, or ± acute;  infl. lvs smaller, ± oblong-ovate.  Infls paniculate, with terminal and axillary branches;  glomerules rather small, globular, few-flowered, strongly farinose.  Perianth segments 0.5–1.1 mm long, broad and imbricate, green or purplish on back with broad dorsal hyaline margin, keeled, fused for nearly 1/2 length.  Fr. invested by perianth;  pericarp easily removed.  Seed horizontal, mostly 1.2–1.4 mm diam., circular, compressed; margin obtuse;  testa glossy black, very faintly striated.  

[From:  Webb et al. (1988) Flora of New Zealand. Volume 4.]

 Biostatus
Exotic
 Phenology

Flowering: Dec.–May.