Compared to the relatively stable population of Syneilesis subglabrata, this species was once thought to be extinct due to the lack of collection records for over half a century after World War II.

The cauline leaves on the upper part of the plant are smaller in size, with shorter petioles, narrower lamina, and less obvious leaf lobes.

Syneilesis subglabrata is endemic to the mountainous regions of central Taiwan, found under the forest canopy at an altitude of 1200 to 2800 meters.

The plant is slender, the flower heads are arranged conically, and the serrations along the leaf margin are deeper (approaching lobes).

Among them, Syneilesis hayatae is limited to open grasslands at altitudes of 300 to 500 meters in Miaoli, mostly located in lowland hills or cemeteries.

[6] After World War II, no new collection records were added up until the publication of the Asteraceae chapter of the second edition of “Flora of Taiwan” in 1998.

[2] In 2008, an ecological observer, Chih-Chung Tsai, accidentally discovered a wild population of Taiwan Syneilesis while investigating plants of the Grewia genus in Miaoli.