Annuals, erect, to 15 cm tall. Stems usually branched, slender, distinctly 4-ribbed to narrowly 4-winged, glabrous or subglabrous; internodes 2--4 X as long as leaves. Leave blade ovate to very narrowly ovate, 3--7 X 1.5--2.5 mm, herbaceous, glabrous or glabrescent, apex acute, midvein abaxially prominent, lateral veins inconspicuous on both surfaces. Flowers solitary in upper leaf axils. Pedicel filamentous, 3--8 mm, glabrous or scabrous. Calyx to 2 mm, glabrous, basally connate to ± half its length, lobes narrowly oblong. Corolla white, campanulate, 3--4 mm, shortly and sparsely bearded at mouth; lobes subrounded, ca. 1.5 mm. Stamens included; filaments ca. 1 mm; anthers introrse, ovate to rarely sagittate, ca. 0.7 mm, with an apical appendix. Pistil ca. 1.5 mm. Ovary ovoid, ca. 0.5 mm in diam. Style ca. 1 mm, base strongly parted, connate along apical half; stigma broadly truncate to 2-cleft. Fruiting pedicel 0.6--2.5 cm. Capsules subglobose, to 2 mm in diam.; style connate only at apex. Seeds angular-ovoid, coarsely reticulate. Fl. Feb-Jun. Herb 3–20 cm; stem branched or not, glabrous or minutely hirsute in lower part, conspicuously 4-ribbed. Leaves lanceolate to narrowly ovate, 1.5–4.4 by 0.6–1.4 mm; apex acute; glabrous; uninerved. Flowers solitary in leaf axils; pedicels 2–11 mm long, postulate. Calyx 2–2.3 mm, campanulate to conical; lobes 0.9–1.2 mm, triangular, sometimes tipped by 1–2 hairs. Corolla 2.5–4 mm, campanulate, thinly hirsute in mouth; lobes 1–1.5 mm, rounded, mucronulate. Stamens with filaments 0.8–0.9 mm, attached below centre of corolla tube; anthers 0.4–0.5 mm, oblong, glabrous. Ovary and style 1.5–2 mm high, styles connate for half their length; stigma capitate to truncate. Fruit 2–3 mm high, styles connate at the tips in mature fruit. Seeds 0.2 mm, angled, coarsely reticulate. Open areas, dry or wet conditions, sandy, marshy or limestone soils. Widespread in Asia in oceanic regions, India (type), Sri Lanka. Burma, Thailand, Vietnam, Coastal China, Taiwan, Korea, Japan, Malesia, Australia (type). Open areas, dry or wet conditions, sandy, marshy or limestone soils. Widespread in Asia in oceanic regions, India (type), Sri Lanka. Burma, Thailand, Vietnam, Coastal China, Taiwan, Korea, Japan, Malesia, Australia (type). Herb 3–20 cm; stem branched or not, glabrous or minutely hirsute in lower part, conspicuously 4-ribbed. Leaves lanceolate to narrowly ovate, 1.5–4.4 by 0.6–1.4 mm; apex acute; glabrous; uninerved. Flowers solitary in leaf axils; pedicels 2–11 mm long, postulate. Calyx 2–2.3 mm, campanulate to conical; lobes 0.9–1.2 mm, triangular, sometimes tipped by 1–2 hairs. Corolla 2.5–4 mm, campanulate, thinly hirsute in mouth; lobes 1–1.5 mm, rounded, mucronulate. Stamens with filaments 0.8–0.9 mm, attached below centre of corolla tube; anthers 0.4–0.5 mm, oblong, glabrous. Ovary and style 1.5–2 mm high, styles connate for half their length; stigma capitate to truncate. Fruit 2–3 mm high, styles connate at the tips in mature fruit. Seeds 0.2 mm, angled, coarsely reticulate. Annuals, erect, to 15 cm tall. Stems usually branched, slender, distinctly 4-ribbed to narrowly 4-winged, glabrous or subglabrous; internodes 2--4 X as long as leaves. Leave blade ovate to very narrowly ovate, 3--7 X 1.5--2.5 mm, herbaceous, glabrous or glabrescent, apex acute, midvein abaxially prominent, lateral veins inconspicuous on both surfaces. Flowers solitary in upper leaf axils. Pedicel filamentous, 3--8 mm, glabrous or scabrous. Calyx to 2 mm, glabrous, basally connate to ± half its length, lobes narrowly oblong. Corolla white, campanulate, 3--4 mm, shortly and sparsely bearded at mouth; lobes subrounded, ca. 1.5 mm. Stamens included; filaments ca. 1 mm; anthers introrse, ovate to rarely sagittate, ca. 0.7 mm, with an apical appendix. Pistil ca. 1.5 mm. Ovary ovoid, ca. 0.5 mm in diam. Style ca. 1 mm, base strongly parted, connate along apical half; stigma broadly truncate to 2-cleft. Fruiting pedicel 0.6--2.5 cm. Capsules subglobose, to 2 mm in diam.; style connate only at apex. Seeds angular-ovoid, coarsely reticulate. Fl. Feb-Jun.General Information
Source: [
Ecology
Distribution
e-Flora of Thailand
EcologyFlora of China @ efloras.org
General Information
| Name | Language | Country | |
|---|---|---|---|
| ya sarui (หญ้าสรุ่ย)(Surat Thani) | Thai | THA |
|
