Stem erect, green, glabrous. Petiole green; leaf blade rhombic-ovate or oblong-lanceolate, glabrous, base cuneate, margin entire or undulate, apex acuminate or acute. Complex thyrsoid structures erect; bracts and tepals distinctly long pointed at apex; bracts of female flowers ca. 1.5 × as long as segments; tepals conspicuously shorter than fruit. Utricles 3-4 mm in diam., circumscissile. Seeds subglobose. Fl. Jun-Jul, fr. Sep-Oct. 2n = 30*, 32*, 34*.
Plants almost glabrous or slightly pubescent distally, especially when young. Stems erect, green or reddish purple, branched distally, mostly in inflorescence, to nearly simple, 0.4-2 m. Leaves: petiole 1/2 as long as to ± equaling blade; blade rhombic-ovate or ovate to broadly lanceolate, 3-15(-20) × 1.5-10(-15) cm, occasionally larger in robust plants, base cuneate to broadly cuneate, margins entire, plane, apex acute or subobtuse to slightly emarginate, with mucro. Inflorescences terminal and axillary, erect, reflexed, or nodding, usually dark red, purple, or deep beet-red, less commonly almost green or greenish red, leafless at least distally , large and robust. Bracts narrowly spathulate, 2-3 mm, equaling or slightly longer than tepals, apex short-spinescent. Pistillate flowers: tepals 5, oblong to lanceolate, not clawed, equal or subequal, 1.5-3 mm, apex acute; style branches erect or slightly reflexed; stigmas 3. Staminate flowers at tips of inflorescences; tepals 5; stamens (4-)5. Utricles obovoid to elongate-obovoid, 2-2.5 mm, smooth or slightly rugose distally, dehiscence regularly circumscissile. Seeds usually white or ivory, with reddish or yellowish tint, sometimes dark brown to dark reddish brown, broadly lenticular to elliptic-lenticular, 1.2-1.6 mm diam., smooth or indistinctly punctate.
Coarse usually pubescent annuals to 2 m. high, simple or with ascending branches. Leaves glabrous above, pubescent or glabrate below, entire to minutely crenulate, ovate to rhombic, apically rounded to acute and mucronate, basally acute to cuneate, 3-15 cm. long, 1-6 cm. broad; petioles 1-8 cm. long. Inflores- cences of thyrses racemosely disposed, the terminal and axillary thyrses cylindric, often drooping, 5-15 mm. broad. Flowers polygamo-monoecious or monoecious; bracts and bracteoles subequal, lanceolate to ovate, 1.5-2.5 mm. long; sepals 5, oblong to ovate, rounded to mucronate apically, 1.5-2 mm. long, the midribs dark green, the margins scariose and tinted with anthocyanins; stamens 5, discrete, 1-2 mm. long; ovary compressed globose, capped by a circular stylopodium; stigmata 3 (-4), longer than the stylopodium. Fruit a smooth to rugulose subglobose utricle, circumscissile near the middle, about 2 mm. long, usually exceeding the sepals; seeds cochleate-orbiculate, dark reddish brown to black, minutely reticulate, 1-1.3 mm. broad.
"Cultigen apparently derived from A. hybridus; infl large and showy, mostly bright red in life, lax, at least the terminal thyrse generally nodding or drooping; bract of the pistillate fls with slender midrib, not surpassing the fr; sep 5, straight, unequal, the shorter (inner) ones less than 2 mm, oblong, acutish, ca half as long as the fr; style-branches erect; seeds in ornamental forms dark brown; 2n=32, 34. Originally cult. for grain and dyestuff, now relictual as a grain-plant, but widely cult. as an ornamental and pot- herb, and occasionally escaping or persistent, but scarcely established in our range. (A. hybridus ssp. c.)"
|abanico chino calalu|
|Blood amaranth, purple amaranth, caterpillar amaranth|