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Chinese begonia species with and without aerial stem. A, B Species without aerial stem: A Begonia guishanensis (tuberous type), B B. augustinei (Rhizomatous or sub-tuberous type); C, D Species with short aerial stem only developed at anthesis: C B. ravenii (tuberous), D B. pulchrifolia (rhizomatous); E, F Species always with aerial stem: E B. modestiflora (tuberous, non-branched to few branched stems), F B. coptidimontana (shrub-like, branched).
