Struchium sparganophorum (Introduced)

Struchium sparganophorum (L.) Kuntze, Revis. Gen. Pl. 1: 366 (1891) (syn: Ethulia sparganophora L.; Ethulia struchium Sw.; Sparganophorus africanus (P.Beauv.) Steud.; Sparganophorus ethulia Crantz; Sparganophorus fasciatus Poir.; Sparganophorus fasciculatus Steud.; Sparganophorus fuscatus Steud.; Sparganophorus sparganophora (L.) C.Jeffrey; Sparganophorus struchium (Sw.) Poir.; Sparganophorus vaillantii Crantz; Sparganophorus vaillantii var. longifolius Griseb.; Struchium africanum P.Beauv.; Struchium americanum Poir.);
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SE. Mexico to Tropical America: Belize, Bolivia, Brazil North, Brazil Northeast, Brazil South, Brazil Southeast, Colombia, Costa Rica, Cuba, Dominican Republic, Ecuador, French Guiana, Guatemala, Guyana, Haiti, Honduras, Jamaica, Leeward Is., Mexico Southeast, Nicaragua, Panamá, Peru, Puerto Rico, Suriname, Trinidad-Tobago, Venezuela, Windward Is.;
Introduced into: Andaman Is., Benin, Burkina, Cambodia, Cameroon, Central African Repu, Comoros, Congo, Fiji, Gabon, Guinea-Bissau, Gulf of Guinea Is., India, Ivory Coast, Jawa, Madagascar, Malaya, Mali, Nicobar Is., Philippines, Senegal, Sri Lanka, Sudan, Thailand, Togo, Vietnam, Zaïre as per POWO;
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Common name: Yerba De Faja
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Erect, branched, semi-aquatic herbs; stem green, sparsely puberulous. Leaves alternate, elliptic-lanceolate, base attenuate and decurrent on the petiole at base, margins serrulate-denticulate, apex acute or acuminate; petiole to 2.5 cm long. Heads axillary, sessile, cluster of 4-5, c. 5 mm across, globose, white, homogamous. Involucre in 4-5 series, outer smaller and inner larger, triangular to oblanceolate, acuminate, greenish, margins scarious and hairy. Receptacle convex, pitted. Florets all tubular, without palea, 4-5 mm long, bisexual. Calyx of three white, 0.5 mm long, acute scales united variously, persistent. Corolla 2-3 mm long, white, tube narrow, lobes 5, spreading glandular. Stamens 3; filaments filiform, white. Ovary c. 1.5 mm long; stigma bifid, purple. Achenes c. 1.5 mm long, triangular, blackish.
Flowering and fruiting: August-February
Wet localities
(Attributions- Dr. N Sasidharan (Dr. B P Pal Fellow), Kerala Forest Research Institute, Peechi as per India Biodiversity Portal)
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161 ID wild plant:
Please ID wild plant,
Location: near Reserve Forest, Chathamattom, Ernakulam District, (Kochi) Kerala PIN:686671
Altitude: 1400fsl
Flower date: 08.09.2021, 04.15pm
Habitat: wild, moisture, marshy, rice field ridges, nearby stream
Plant habit: creeping/erect obliquely, branches, weak fleshy stem 07mm diameter, aromatic, annual
Height: 01.5 feet
Leaves: alternate, ovate, apex, serrate margins, soft, aromatic, size:08×6cm or less
Flower: diameter:02.5mm, white, non fragrant
Fruit:
Seed:
Camera: mobile Samsung Galaxy A21s