Spectator # 2575 ( The Elusive Pabulum! )

[Matakari]

Good evening and thanks for the help you offered. The pieces have fallen nicely into place for the final hurdle to this puzzle. Answers to the following should do the trick now, thanks again!
11(A) Parrot crosses centre for orris plants (6): ?E?R?A
20(D) Tree beneficial to Dutch town (7) : ???F?R?
35(D) Partial concussion’s bad for Adelaide (5) : ??C?S

[Toorak]

11 Kerria - err inside kea (parrot)

[JJ109]

35 Oncus (in clue) + Australian slang for bad

[Toorak]

20 ash for d(utch)

[Dredd]

KEA parrot and centre of oRRIs = KERRIA

[Matakari]

Many thanks, Toorak, JJ109, Dredd! My grid is now filled except for
‘the number of’: Q34/22A x" for which I have: GOL?I/RI?GS, but am in a quandary as to how they fit here.

[Neveracrossword]

Matakari, Five - Five Gold rings (If you've done the sum, you'll have known the number needed).

[Neveracrossword]

Matakari, your 'quandary' has made me wonder if you have done the sum, the thematic element? Maybe your grid's been filled without it!

[Matakari]

It's all done now, but would like some help with parsing this one, thanks.
7(A) Salary drama lecturer forfeited (3): PRO

[Neveracrossword]

7 Pay, salary. Play = drama, drop the L, learner.

PS Better luck next week!

[Neveracrossword]

Sorry, Matakari, drop the L, lecturer. I hope it's easy for you to fix the thematic 8 D.

[Matakari]

Thanks, NACW!

[Neveracrossword]

You're welcome, Matakari. I bet you're glad to have got to the end of this one!