Herbs perennial. Stems procumbent, subterete or slightly angular, glabrous or sparsely hairy when young. Petiole 4-30 mm, base expanded into sheath 2-2.5 mm; leaf blade elliptic to ovate, obovate, or obcordate, 8-50 × 4-45 mm, thinly fleshy, base cuneate, apex obtuse, retuse, truncate, or slightly acute. Flowers solitary, sessile. Perigone lobes usually 5, inside mostly pale pink, rarely white, 4-5 mm; perigone tube fused with basal sheath of pedicel, forming a funnel; lobes rather obtuse, with an apical spur. Stamens 10-25. Stigma 1, ca. 3 mm. Capsule truncate at apex, 2-lobed, operculum fleshy, base thinly walled. Seeds several, black, reniform, 1-2.5 mm, broad, with low crests. Fl. summer. 2n = 26, 28, 56.

Source: [
• 10
]. 

Plants annual, succulent, usually glabrous. Stems prostrate or decumbent, diffusely branched, to 10 dm; young branches with lines of minute hairs proximal to petioles. Leaves: unequal pairs alternating along stem; stipules dilated at base; petiole usually equaling blade; blade elliptic to orbiculate, to 4 cm, apex obtuse, often notched, or apiculate. Inflorescences: flowers usually solitary, sessile, in axils of smaller leaves (bracts) of some pairs, partly covered by sheathing stipule of bracts; bracteoles connate, 1-1.5 mm, apex acute. Flowers: calyx 3-5 mm; calyx lobes purple adaxially, lanceolate, 2.5 mm; stamens 5-10. Capsules cylindric, ± curved, 4-5 mm, corky, basal portion appearing embedded in stem, apical portion containing 1 seed; apical wings 2, prominent, erect, crestlike. Seeds ca. 7, dull reddish brown to black, ridged, 1.5-2 mm.

Source: [
• 11
]. 

Trianthema portulacastrum L., Sp. Pl. 223. 1753; T. monogyna L.; T. procumbens Mill.

Hierbas anuales, tallos jóvenes a veces con una línea de tricomas decurrentes entre los nudos, glabrescentes, erectas a postradas, suculentas. Hojas opuestas, desiguales, con la hoja más grande de cada par al menos dos veces más grande que la pequeña, simples, obovadas a suborbiculares o espatuladas, glabras, la más grande de cada par 1–2.9 (–4) cm de largo y (0.5–) 0.9–2.9 cm de ancho, ápice agudo a retuso y frecuentemente mucronado, base cuneada; pecíolos connados en la base y formando una vaina alrededor del tallo, aquellos de las hojas más grandes 4–19 mm de largo, estípula deltoide, 1.3–4.7 mm de largo, remotamente serrada o entera. Flores solitarias, axilares, sésiles; tubo calicino campanulado, 1.6–4.1 mm de largo, parcialmente cubierto por la vaina peciolar, los lobos 5, imbricados, lanceolados, glabros, 0.9–2.4 mm de largo y 0.8–1.5 mm de ancho, con un apéndice en forma de cornículo, barbado, 0.6–0.8 mm de largo en la superficie exterior justo debajo del ápice, rosados o morados internamente; estaminodios ausentes, estambres 10, insertos en la boca del tubo del cáliz, filamentos libres, 1–2.5 mm de largo, anteras 0.4–0.7 mm de largo y 0.3 mm de ancho; ovario súpero, 1-locular, 1.6–3 mm de largo y 1–2 mm de ancho, pocos óvulos, placentación basal-parietal, estilo 1, 1.1–2.8 mm de largo. Fruto una cápsula circuncísil casi envuelta en la vaina peciolar, turbinada, truncada y crestada en un lado en el ápice, 4.5–6 mm de largo y 2.5–3.3 mm de ancho; semillas 3–8, reniformes, 1.5–1.9 mm de largo y 1.5–1.7 mm de ancho, arrugadas, de color café-rojizo a negro.

Común en playas, en las costas pacífica y atlántica, menos común en tierra adentro; 0–500 m; fl y fr may–dic; Marshall 6634, Stevens 23065; pantropical. Un género con ca 15 especies distribuidas en los trópicos y subtrópicos de ambos hemisferios.

Source: [
• 12
]. 

Herbaceous annuals, erect or prostrate, the young stems sometimes with a decurrent line of hairs from the interpetiolar stipules to the node below and glabrescent, often alternately branched by the development of the axillary bud subtended by the smaller leaf of the nodal pair. Leaves of any pair strikingly unequal, the larger at least twice as large as the smaller, obovate to rounded- spatulate, 1-3 cm. long, 0.5-2.0 cm. broad, acute, obtuse, retuse and often mucronulate at the apex, cuneate at the base, glabrous above and below; petiole 0.3-1.5 cm. long, at the base connate into a sheath surrounding the stem, the interpetiolar stipule deltoid, 1-2 mm. long, remotely serrate or entire. Inflorescence with the flowers solitary; sessile. Flowers with the perianth tube campanulate, often intimately associated with the petiolar sheath of the subtending leaves, the lobes lanceolate, about 1.5 mm. long, 1 mm. broad, glabrous, appendage horn-like, barbed about 0.75 mm. long; stamens 10, inserted at the orifice of the perianth tube, the filaments filiform, about 1.5 mm. long, glabrous, the anthers ovoid, about 0.5 mm. long and broad; ovary turbinate, about 1 mm. long, I mm. in diameter, truncate and irregularly fleshy-lobed at the apex, glabrous, the style 1, about 1 mm. long. Capsule almost enclosed in the petiolar sheath, turbinate, about 4.5 mm. long, 3.5 mm. in diameter, sessile, truncate and crested at the apex, circumscissile at about the middle; seeds 2-5, reniform, 1.5-1.75 mm. in diameter, the testa wrinkled, reddish-brown to black.

Source: [
• 13
]. 

"Perennial, glabrous or sparsely hairy, diffusely branched from the base, decumbent or ascending, to 1 m; lvs round-obovate, 1–4 cm, slender-petiolate, the members of a pair somewhat unequal; fls sessile, partly concealed in the petiolar sheath; stamens 5–10; ovary unilocular, style 1; membranous hypanthium and small cal pushed off by growth of the fr; fr 4–5 mm; asymmetrically crested around the broad top; seeds 1–4, rough, 2 mm. Widespread tropical weed, extending n. to Okla. and Mo., and rarely about our Atlantic ports. May–Sept. Reputedly poisonous to livestock."

Source: [
• 14
]. 

Sepals pink

Source: [
• 1
]. 

Rather fleshy, almost glabrous, prostrate herb

Source: [
• 1
]. 

Stamens 10–20, inserted on the calyx-tube.

Source: [
• 8
]. 

Seeds 3–12, compressed, rounded, with “ammonite-like” markings.

Source: [
• 8
]. 

Ovary truncate, 2-lobed; style 1.

Source: [
• 8
]. 

Flowers axillary, solitary, partly hidden by the sheathing leaf-bases.

Source: [
• 8
]. 

Perianth segments up to 5 mm. long, pinkish or yellowish, the tube longer than the acute lobes with a dorsal apiculus.

Source: [
• 8
]. 

A prostrate somewhat succulent annual herb, subglabrous, the young parts shortly hairy; stems up to 50 cm. or more, procumbent or ascending, spreading.

Source: [
• 8
]. 

Leaves opposite, one of each pair much smaller than the other, leaf-lamina 3–45 × 3–40 mm., obovate, broadly obovate or almost circular, entire, obtuse, rounded or retuse, sometimes slightly apiculate at apex, cuneate at base, glabrous or sparsely hairy on the midrib below, petiolate, stipulate; petiole 2–20 mm. long, sparsely hairy, expanded into a sheathing membranous base connate with that of the opposing leaf; stipules up to 3 mm. long, narrowly triangular-acuminate.

Source: [
• 8
]. 

Ovary truncate, bilobed; seeds 3–12.

Source: [
• 9
]. 

Calyx-lobes obtuse, with a dorsal apiculus.

Source: [
• 9
]. 

Stamens 10–20, inserted on the calyx-tube.

Source: [
• 9
]. 

Flowers axillary, solitary, partly hidden by the sheathing leaf-bases, hermaphrodite, pinkish or white, 4–5 mm. long.

Source: [
• 9
]. 

Stipules narrowly triangular, acuminate, up to 3 mm. long.

Source: [
• 9
]. 

Petiole 2–25 mm. long, distinct, sparsely hairy, expanded into a sheathing membranous base connate with that of the opposing leaf.

Source: [
• 9
]. 

Leaves opposite, one of a pair much smaller than the other, petiolate, stipulate; blade obovate or broadly so, entire, obtuse, rounded or retuse, sometimes slightly apiculate at apex, cuneate at base, glabrous or sparsely hairy on the midrib below, 4–50 mm. long, 4–45 mm. broad.

Source: [
• 9
]. 

A somewhat succulent subglabrous annual herb; stems procumbent or ascending, spreading, glabrous or sparsely hairy, up to 50 cm. long or more.

Source: [
• 9
]. 

Prostrate completely glabrous herb. Flowers solitary, ± hidden by sheathing leaf bases. Calyx tube adnate to petiole. Flowers yellowish green with pink.

Source: [
• 15
]. 

Erva

Herb

Source: [
• 13
]. 

A weed of waste places.

Source: [
• 1
]. 

Weed in cultivated land.

Source: [
• 15
]. 

Terrícola

A pantropic species.

Source: [
• 13
].