Home
Plants annual, pubescent when young, becoming glabrescent at maturity. Stems decumbent or erect, branched proximally, 0.7-1 m. Leaves: petiole 1/2-11/2 times as long as blade; blade obovate or obovate-elliptic to oblan-ceolate, 1-2 × 0.5-1 cm, base cuneate to attenuate, margins entire, apex obtuse, rounded, or slightly emarginate, mucronate. Inflorescences axillary clusters extending to near base. Bracts of pistillate flowers lanceolate, 2-4 mm, shorter than tepals. Pistillate flowers: tepals 3, reflexed, ovate-elliptic to lanceolate, 3-5 mm, apex tapering and long-aristate; style branches spreading; stigmas 2. Staminate flowers intermixed with pistillate; tepals 3, equal; stamens 3. Utricles ellipsoid or ellipsoid-ovoid, 2 mm, shorter than tepals, mostly smooth (or slightly rugose distally), dehiscence regularly circumscissile. Seeds black, subglobose or lenticular, 1-1.4 mm diam., semishiny (or minutely punctulate and reticulate).
Annual herb, stems decumbent or erect, ± pubescent with crisped, elongate hairs when young. Leaves green or sometimes with a purplish central blotch; lamina obovate-elliptic to almost elliptic, glabrous, base attenuate or cuneate, apex emarginate; axils without spines; petioles 3-40 mm long. Inflorescences dense, axillary clusters extending to near base of stem; leafy throughout, male and female flowers. Flowering time Dec., Jan. Fruit ellipsoid-ovoid. Seed ellipsoid-rounded, glossy blackish.
Perianth segments 3, similar in male and female flowers, lanceolate to oblong, or in the females rarely narrowly spathulate, 3–6 mm., pale-membranous or (especially in the female flowers) somewhat greenish above, gradually or more abruptly narrowed into the long (0.75–1.5 mm.) awn formed by the excurrent midrib, the latter green but the divergent or flexuose awn colourless above; fruiting female perianth segments slightly accrescent, wider than those of the male flowers.
Leaves glabrous, or thinly pilose on the inferior surface of the primary venation, sometimes with a dark purple blotch, long-petiolate (petioles up to c. 4 cm. long, sometimes longer than the lamina), the lamina narrowly or broadly elliptic to rhomboid or spathulate, c. (5) 15–45 (60) × (4) 10–30 (40) mm., blunt or retuse at the apex with the midrib excurrent in a short mucro, at the base cuneate to attenuate, more or less decurrent along the petiole.
Annual herb, up to 1 m high. Stems decumbent or erect, pubescent at least when young. Leaves with blade obovate, broadest above middle, narrowing to obtuse apex, 10-16 x 5-30 mm. Flowers: entirely in axillary, cymose clusters, stems appearing leafy to apices; female perianth segments narrowed to a fine, subulate acumen 0.75-2.00 mm long, green; Jul.-Jun. Fruit ellipsoid-ovoid, shorter than perianth, smooth or slightly rugose above.
An annual herb growing 50 cm high. The plant usually sprawls along the ground. The leaves are simple and arranged in spirals. The leaf stalk is 4 cm long. The leaf blade is spoon shaped and 2-5 cm long by 1-3 cm wide. They are wedge shaped at the base. The flowering shoots are leafy. The flowers have prickly hair-like points. The flowers are green in clusters in the axils of leaves.
Bracts and bracteoles deltoid-lanceolate, bracteoles subequalling or shorter than the perianth, pale-membranous, often greenish centrally above, the midrib often excurrent in a long, fine awn often as long as the basal portion, bracteoles shorter (to 2 mm. long), the awn colourless and often more or less reflexed above.
Annual herb, up to 1 m high. Stems decumbent or erect, pubescent at least when young. Leaves broadest above middle and ± narrowed to obtuse apex. Inflorescences in axillary cymose clusters. Female perianth segments narrowed to a fine, subulate acumen 0.75-2.00 mm long. Flowers green.
Erect or decumbent annual to 70 cm, branching from base; young stems sparsely crisped-hairy, often reddish. Leaves obovate-oblanceolate, sometimes with purple blotch. Flowers in dense, axillary clusters forming leafy false-spikes; perianth segments 3, aristate.
Flowers green, males most frequent at the top of the upper clusters, all in axillary clusters 6–15 mm. across, approximate above, usually increasingly distant towards the base of the stem and branches with male and female flowers intermixed.
Capsule ovoid-ellipsoid to pyriform, c. 2.5–3.5 mm. long, with a short beak, circumcissile, membranous, obscurely wrinkled, shorter than the perianth (attaining the base of the aristate apices).
Stem and branches stout, angular, glabrous or thinly hairy below, upwards increasingly furnished with long, crisped, multicellular, rather flocculent hairs.
Annual herb, ascending or erect, simple or branched from the base and frequently also above, reaching 15–55 cm.
Seed 1–1.5 mm. across, black or chestnut, shining, feebly reticulate.
Stigmas 3, flexuose or often reflexed, pale, 1.5–2 mm. long.
