This Begonia species was described in 2015 and native to Palawan.  It was described along with B. tagbanua and B. taraw, in “Three new species of Begonia endemic to the Puerto Princesa Subterranean River National Park, Palawan” by Rosario Rivera Rubite1 , Mark Hughes2 , Patrick Blanc3 , Kuo‑Fang Chung et al. 

From this paper, these three species are “strongly supported as being members of Begonia sect. Baryandra, and belong to a clade mostly endemic to Palawan….Begonia hughesii is most similar to B. acclivis, but differs in having leaves which are glabrous above (not with scattered 2 mm long hairs) and uniform bright green (not markedly variegated), and dimorphic stipules which are either hairy on the keel only or hairy all over the abaxial surface…herbarium material has been collected from the type locality near the entrance to the Underground River and on Ugong Rock near Sabang and on limestone outcrops at the base of Mt. St. Paul. Further photographic evidence reveal records from the other side of the Babuyan River at PPURNP and within the forest on Cleopatra’s Needle (Jonah Van Beijnen, pers. comm.).

The species grows on eroded limestone in semi-shade under broadleaf forest, and was flowering and fruiting when collected in early November. In cultivation in the greenhouse of Academia Sinica in Taipei, Taiwan, it flowered and fruited from July to December. Etymology The species epithet is named after Dr Mark Hughes of the Royal Botanical Garden Edinburgh, who studies extensively Southeast Asian begonias including Philippine Begonia….Proposed IUCN Red list category Least concern….”

The last photo is representative of the plants available. They are well rooted and shipped meticulously in their pots.