Two new C-methyl flavonoids, (2R,3S)-6,8-di-C-methyldihydrokaempferol (1) and (2R,3R)-6,8-di-C-methyldihydrokaempferol (2) were isolated from the aerial parts of Diplomorpha canescens (MEISN.) C. A. MEYER along with eleven known flavonoids such as genkwanin (3), rhamnocitrin 3-O-beta-D-glucopyranoside (4), genkwanin 5-O-beta-D-glucopyranoside (5), apigenin (6), kaempferol (7), kaempferol 3-O-beta-D-glucopyranoside (8), rhamnetin 3-O-beta-D-glucopyranoside (9), luteolin (10), quercetin (11), quercetin 3-O-beta-D-glucopyranoside (12) and genkwanin 5-O-primeveroside (13). Structures of these compounds were elucidated on the basis of spectroscopic data.