Apostasia nuda
species of plant
Apostasia nuda, or Grass Orchid, is a terrestrial orchid within the Orchidaceae family and the Apostasioideae subfamily. Most commonly found in the Mainland and Islands of Southeast Asia, this species remains native to Singapore. This perennial growing shrub is considered “critically endangered” in regions of Singapore due to deforestation and environmental pressures.
Description
A. nuda grows from a thin rhizome with fibrous roots, forming an erect stem that can reach up to 30-70 cm tall. Appearing similar to grass, the leaves are lanceolate to linear shaped, with parallel venation and alternate and distichous arrangements along the stem. The leaf dimensions range from 10-30 cm long and 1-3 cm wide.
The inflorescence is terminal bearing several radially symmetrical flowers in the upper leaf axils. Each flower is small, measuring approximately 1-2 cm in diameter, appears in either a pale yellow, creamy white, or white color. There are three sepals and three petals. Both are very similar in size and shape and number, allowing them to be considered tepals.
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The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Sep 14, 2026. The linked authority identifier is Q150521. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “Apostasia nuda” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.