Stuck with a couple please!
5a Large coloured bracts of aroid plants and palms (7) _P_ _H_S
10a The rotating disc of a centrifugal pump, compressor (8) I_P_ _ L_R
15d Males heirs to sovereign thrones (5/7) C_O_ _ Princes?
23a In music, loud or loudly (5) F _ _ T _
26a Any od the first series of US satellites (8) E _ P _ _ R _R
28a A leguminous plant of Europe and Asia widely cultiaved for forage (7) AL_AL_A
Sorry - more than I thought! Cheers in advance