Digitalis folium

FOXGLOVE, Digitalis purpurae folium The drug is the dried leaf of Digitalis purpurea L., family Scrophulariaceae ... 

Fig, 3A Digitalis lanatae folium (1) and D. purpureae folium (2) both show their major zones in the lower R, range 0.2-0.4 with seven violet-blue cardenolide zones in 1 and five in sample 2,... 

Digitalis lanatae folium (1) is characterized by the lanatosides A-C at R, 0.3-0.4 with lanato.side A as the principal cardenolide, followed by smaller quantities of lanatoside B and C (Tl) directly below. The cardenolide zone in the R, range 0.2 can be prominent (sample 1) or of low concentration (sample la). 

Digitalis purpureae folium (2) is characterized by the major zone of purpurea glycoside A with a slightly lower R, value than lanatoside C (Tl). Purpurea glycoside B is found as a minor zone directly below purpurea glycoside A, followed by a cardenolide zone at R, 0.2. 

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