Three minor flavonoids were isolated from the corollas and leaves of Aeschynanthus species cultivars using MeOH, identified as scutellarein 7- O-(6″-methylglucuronopyranoside) (1), 6-hydroxyluteolin (2) nepetin 4′- O-glucuronopyranoside (3) by UV 1 H NMR spectroscopy, LC–MS, acid hydrolysis. These flavone glycosides are reported in nature for first time.

Abstract Background Dionysia tapetodes , a small cushion-forming mountainous evergreen in the Primulaceae, possesses vast surface-covering of long silky fibres forming characteristic “woolly” farina. This contrasts with some related Primula which instead form fine powder. Farina is formed by specialized cellular factories, type glandular trichome, but precise composition and how it exits cell p...