Lindsaea kohkongensis I. C. Hwang, M. O. Moon & B. Y. Sun

Chen, Cheng-Wei, Do, Van Truong, Truong, Quang Cuong, Dang, Viet Dai, Luu, Hong Truong, Chao, Yi-Shan, Huang, Yao-Moan & Chung, Kuo-Fang, 2025, Studies of Vietnamese Pteridophyte Flora 3, PhytoKeys 255, pp. 143-169 : 143-169

publication ID	https://doi.org/10.3897/phytokeys.255.141395
DOI	https://doi.org/10.5281/zenodo.15236885
persistent identifier	https://treatment.plazi.org/id/4A3F447C-5DB1-5B35-8B5F-CB3066F0443B
treatment provided by	PhytoKeys by Pensoft
scientific name	Lindsaea kohkongensis I. C. Hwang, M. O. Moon & B. Y. Sun
status

Treatment

Lindsaea kohkongensis I. C. Hwang, M. O. Moon & B. Y. Sun View in CoL , Korean J. Pl. Taxon. 53 (4): 289. 2023.

Fig. 2 View Figure 2

Type.

Cambodia • Koh Kong, Thma Bang District, near Chamnar village , 22 Dec 2013, Sun et al. C 5520 (holotype HIBR; isotypes HIBR, KB) .

Distribution and ecology.

This species was recently described from Cambodia and Malaysia. In Vietnam, it grows along a valley in damp tropical forests as lithophytes and is frequently submerged in water.

Specimens examined.

Vietnam. • Kien Giang Province: Phu Quoc district, Phu Quoc National Park , 6 Mar 2018, Chen Wade 5034 ( TAIF [ 514046 !]) .

Note.

Morphologically, this species closely resembles Lindsaea ensifolia . Although L. kohkongensis is usually a much smaller species than L. ensifolia , we did not identify any qualitative trait to distinguish them. Currently, subaquatic habitat preference appears to be the most reliable characteristic for differentiating this species from L. ensifolia . Yun et al. (2023) described L. kohkongensis as having free venation, in contrast to the anastomosing venation found in L. ensifolia . However, this is not true. As demonstrated in Fig. 3 G View Figure 3 of their paper and Fig. 2 F View Figure 2 of the current study, the veins of L. kohkongensis are connected near the lamina margin, forming areoles in fertile fronds.