B. sonlaensis

Lithophytic, evergreen, stemless, regularly monoecious, rosulate herb. ; Lithophytic herb on vertical shady cliff. Occasional. Lithophytic, evergreen, stemless, regularly monoecious, rosulate herb. Rhizome short, plagiotropic, creeping, fleshy, stout, (2)3–4(5) cm long, 0.5–1 cm in diam., covered by pinkish triangular ovate, acute, glabrous bracts, at nodes with numerous thin, filiform roots faced to the ground and with (2)3–4(5) leaves at apex.

• Classification: Species
• Plant Type: Rhizomatous
• Botanical Section: Coelocentrum
• Origin: Asia, Vietnam
• Originator: L.V. Averyanov & H.Q. Nguyen, Eleven new species of Begonia L. (Begoniaceae) from Laos and Vietnam.
• Date of Origin: 2012