Guardian 26513

[anikomo]

Would really appreciate help with final three clues'
15a. Tree can be picturesque (not quite, unfortunately) (6) I have S?R???
25a. Satisfied with Richard the Fourth onwards being ignored as not imperial.(6) I have ?E?R??
16d. Extremes of cultural elitism: Etonian courtesy and forgiveness.(8) I have ??E?E???

[Lie-in King]

15a Spruce - anag 'p(i)c(t)ures(que)' (not 'quite')
25a Metric (not imperial) - 'met' (satisfied) + 'Ric(hard)' (4th onwards ignored)
16d Clemency - extremes of 'c(ultura)l e(litis)m E(tonia)n c(ourtes)y'

[anikomo]

Thank you very much, Lie-in King.

[Lie-in King]

You're welcome :-)