Alternanthera sessilis L R Br

[From Latin, alternus = every other and from Greek, anthos = flower and Latin sessilis = attached directly by the base]

Physical description: It is an annual tropical herb with 20cm-50cm long, prostrate and many branched stems. The nodes are covered with long white

Synonymy: Alternanthera nodiflora R. Br., Telanthera amoena R. Br., Gomphrena sessilis.

Common names: Carpet-weed; rumput aur, keremah bukit, kerumuk (Malay); pounanganni (Tamil); horngtyang wu (Taiwanese).

Fig. 66. Alternanthera sessilis (L.) R. Br.

hairs, and the internodes with a pair of longitudinal whorls of hairs. Leaves: 2cm-6cm, obtuse at the apex, remotely crenate and subsessile. The inflorescences are axillary, globose and sessile white heads, with very small bracts and bracteoles. The flowers comprise of a 5-lobed perianth, each lobe is 2 mm-2.5 mm long and glabrous, consisting of 3 stamens and a few staminodes, hence the name of the genera. The fruits are obcordate and of obtusely margined utricles (Fig. 66).

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