FLORA OF LAOS
Begoniaceae
Begonia quadripetiolata Aver., sp. nov.

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.

LA-VN 1510 22 March 2017

Coll.: L.Averyanov, N.T.Hiep, N.S.Khang, C.Q.Ngan, T.Maisak, Khamla Inkhavilay, Hongthong Southyvohanh, Pinmany Sisavath, Chanthala Cheuaysamphanh. Fl. in cult. 20 March 2019. Flowers odorless, white, anther yellow, only male flowers. L. Averyanov, T. Maisak, LA-VN 1510/1. Photos.