Pteris pseudowulaiensis Y. S. Chao

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.15236887
persistent identifier	https://treatment.plazi.org/id/FFBC7C92-BCCB-5197-9143-06B00505EE9C
treatment provided by	PhytoKeys by Pensoft
scientific name	Pteris pseudowulaiensis Y. S. Chao
status

Treatment

Pteris pseudowulaiensis Y. S. Chao View in CoL , Taiwania 66 (3): 314. 2021.

Fig. 3 View Figure 3

Type.

Taiwan • New Taipei, Mt. Pataoerh , 600–700 m, 29 Apr 2016, Hsu 8437 (holotype TAIF [ 497137 !]; isotype TAIF [ 497138 !]) .

Distribution and ecology.

This species, recently described from Taiwan, was initially reported from southern China and Taiwan ( Chao et al. 2021). In Vietnam, P. pseudowulaiensis was discovered in relatively dry evergreen broadleaf forests at lowland areas of Cuc Phuong National Park.

Specimens examined.

Vietnam • Ninh Binh Province: Cuc Phuong National Park, Muong Khu trail , Y.-S. Chao 3509, 3515, 3517, 3531 ( TAIF!, VNMN!) .

Note.

This species belongs to the Pteris fauriei Hieron. complex, a taxonomically challenging group due to its reticulate evolution involving hybridization, polyploidization, and apomixis ( Chao et al. 2022). In Vietnam, five species from this complex have been recorded, namely P. arisanensis Tagawa ( Chao et al. 2022) , P. kawabatae Sa. Kurata ( Chao et al. 2021) , P. latipinna Y. S. Chao & W. L. Chiou ( Chen et al. 2020 b) , P. oshimensis Hieron. ( Liao et al. 2013) , and P. pseudowulaiensis . Morphologically, P. pseudowulaiensis closely resembles P. oshimensis but differs by having broader pinnae, measuring 2–3.5 cm compared to less than 2 cm in P. oshimensis . According to Chao et al. (2022), P. pseudowulaiensis is an apogamous diploid originating from hybridization of P. wulaiensis C. M. Kuo (a species reported from Japan and Taiwan) and another unknown species.