FLORA OF LAOS Hin Nam No Nature Protected Area Polypodiaceae s.l. (Pteridaceae) Calciphilopteris ludens (Hook.) Yesilyurt & H. Schneid. ( = Doryopteris ludens (Hook.) J. Sm.) Laos, Khammoune prov., Boualapha distr., Nong Seng village, Vang Phae Lay mountain, around point 17°31'02.7"N, 105°47'17.2"E. Primary dry evergreen and semideciduous broad-leaved forest on very steep rocky slope near karstic hill top composed with solid, marble-like highly eroded limestone at 300-530 m a.s.l. Terrestrial and lithophytic fern on very steep rocky slope near mountain top. Not rare. 11 May 2018, L. Averyanov, Khang Sinh Nguyen, T. Maisak, Littideth Xaiyavongsa, Siphanom Keovankham, AL 917.
Coordinates (geographic position):17° 31′ 2.7″ N, 105° 47′ 17.2″ E ±1000 mRecord creation: 2019-01-13, Leonid Averyanov, PhotoScan D1Citation: Specimen LE 01048604 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01048604