Begoniaceae

Begonia quadripetiolata Aver.

Vientiane prov., Vang Vieng distr., Oa Hom village, around point 19°06'52.4''N 102°22'35.8''E, secondary broad-leaved evergreen and semideciduous dry forest with on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. 550–650 m a.s.l., lithophytic herb with stem 10-20 cm tall on shady cliffs, leaves and petioles uniform green, locally very common, 22 March 2017, L. Averyanov, N.T. Hiep, N.S. Khang, C.Q. Ngan, T. Maisak, Khamla Inkhavilay, Hongthong Southyvohanh, Pinmany Sisavath, Chanthala Cheuaysamphanh, LA-VN 1510. Herbarium prepared in 20 March 2019, L. Averyanov, T. Maisak, LA-VN 1510.1.