First 3 are straight clues.
6 REN
35 TRIE
38 DERE - from 'derestrict'
41a SENE [extra word 'ended'].
10a has a misprint - 'So much' = THE + 'E(nglish') 'inBringing' R
43 - SALLEE - def 'gum tree' (SEE = 'recognise' around ALL = 'every') [with 'mammals' extra].