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Hydrocotyle sibthorpioides Lamk

Hydrocotyle sibthorpioides Lamk

Family

Umbelliferae

Synonyms

Hydrocotyle rotundifolia DC., Hydrocotyle benguetensis Elmer, Hydrocotyle delicata Elmer.

Vernacular Names

Malaysia

Ulam gunung, pega­ga embun.

English

Lawn pennywort.

In­donesia

Tikim (Jakarta), antanan leutik (West Ja­va), andem (Java).

Philippines

Tomtomon (Bontoc), enit (Kalinga), kanapa (Igorot).

Thailand

Ya-klethoi (Central).

Vietnam

Rau m[as] m[ow].

Geographical Distributions

Hydrocotyle sib­thorpioides is probably of Asiatic origin, but has become a weed with pantropical and subtropical distribution. It is very common all over Southeast Asia.

Description

Hydrocotyle sib­thorpioides is a perennial, prostrate to suberect, poly­morphous herb, which is up to 50 cm long, with slender and stoloniferous stems and rooting at the nodes.

The leaves are arranged alternate. The stipules are ovate to obovate and measure up to 1 mm x 1.5 mm. The petiole is up to 6 cm long but not sheathing at the base. The leaf blade is roundish to 5-angular in outline, measures 0.3-2.5 cm across, deeply cordate, 3-5-lobed to 3-5-partite, and hairless or hairy. The segments are crenate to serrate.

The inflorescence is an umbel, which is 5-15-flowered, solitary and opposite the leaves. The peduncle is up to 3 cm long. There are 4-10 small involucral bracts around and between the flowers. The flowers are bisexual and subses­sile. The 5 sepal teeth are minute or obsolete. There are 5 ovate petals, which measure 0.7 mm x 0.5 mm and greenish-white. The disk is flat and with elevated margin. There are 5 stamens that alternate with the petals. The ovary is inferior with 2 styles.

The fruit is a laterally compressed schizocarp and with 2 one-seeded meri­carps. The mericarp measures 1-1.3 mm x 0.8 mm, yellow to brown, smooth or with short stiff hairs and some­times red-punctulate.

Ecology / Cultivation

Hydrocotyle sib­thorpioides is commonly found in sunny or slightly shaded, moist localities, e.g. along stream banks, between stones in pathways, alongside walls, but also in meadows and in plan­tations of tree crops. It has a wide altitudinal adaptation, occurring from sea level up to 4000 m. Natural dispersal is by water and animals.

Line Drawing / Photograph

Hydrocotyle_sibthorpioides_Lamk

References

  1. Plant Resources of South-East Asia No. 8: Vegetables.

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