A revision of Microchirita (Gesneriaceae) in Thailand

Microchirita (C.B.Clarke) Yin Z.Wang (Gesneriaceae: Didymocarpoideae) in Thailand is revised and 29 species are recognised, two of which have three varieties each. Eight new species are described, Microchirita albocyanea C.Puglisi, Microchirita glandulosa C.Puglisi, Microchirita hypocrateriformis C.Puglisi, Microchirita limbata C.Puglisi, Microchirita luteola C.Puglisi, Microchirita tadphoensis C.Puglisi, Microchirita tetsanae C.Puglisi, Microchirita thailandica C.Puglisi; three new varieties are described, Microchirita involucrata var. gigantiflora C.Puglisi, Microchirita mollissima var. glabra C.Puglisi, Microchirita mollissima var. glandulophylla C.Puglisi; and one name is combined at a new rank, Microchirita involucrata var. capitis (Craib) C.Puglisi. Two lectotypifications are made, one of which is a second step lectotypification. A key to all taxa is given, all taxa are described, and many are illustrated.