Rare Hainan/tropical plant shown in Shanghai Botanical Garden
In the rare fern pavilion of the Shanghai Chenshan Botanical Garden, an unusual plant stands out from the crowd. It is called the Helminthostachys zeylanica, commonly known as Kamraj and tunjuk-langit. The genus of the Helminthostachys is monotypic and, just like the other member of its family, it has clusters of sporangia on the stems of its fertile and spike-like fronds.
The plant is harvested during the wet season in July or August in Southern China’s Guangdong province, Taiwan province, Hainan province and Yunnan province. It is also found in the subtropics of other countries in Asia and Australia.
The plant’s fresh leaves can be eaten as vegetables and once dry the leaves they can be used to treat a bleeding nose. The scape can be used to treat cough and asthma and it can be also applied to venomous snake bites.
Although its spadix looks like a flower, the plant is actually a flowerless and seedless vascular plant. The frond spike arises from the base of the leaves with its own stipe. Below the spike is a sterile leafy segment (the trophophore). Both it and the sporophore arise from a common petiole.
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