Previous chromosome information for the lower numbers 2n=14, 16, 18, and 20 in Asian Begonia are restricted to nine species two sections Diploclinium Platycentrum. Here we report first counts of four as well reconfirmed sect. We found 2n=12 B. cathcartii, lowest number known genus. The with reported is increased 13 Additionally, provide karyotypes seven Based on present results previous reports...