Among the many gingers found in Peninsular Malaysia, Geostachys is one of the lesser known genera. One of the species in this genus is Geostachys elegans Ridl., which can be found in three states; Johor, Melaka and Pahang.

Although G. elegans is sometimes though of as having an attenuated structure, the species itself is considerably large with its leafy shoots reaching up to 3.9m high. One interesting characteristic observed in G. elegans is the colour variation of the abaxial leaf surface. There are times when the abaxial surface of the young leaves start out reddish and slowly change to full green when the leaves reach their maximum size. At other times, the colour can be fully purple throughout the lifetime of the leaves. This phenomenon can sometimes confuse researchers during identification.

The inflorescence of Geostachys elegans emerges from the base of the rhizome. The peduncle is erect with the cincinni facing upwards and arranged on all sides with each cincinnus producing 1-2 flowers. The flowers are yellow or pale yellow and faintly scented. The ovoid fruit changes from light green to orange when mature.

This species thrives from the lower montane to upper montane forest on moist slopes. G. elegans is a very adaptable species and therefore enjoys a wide distribution in Peninsular Malaysia.

By Lau Kah Hoo
e-mail: laukh@frim.gov.my