7d. Non-flowering plant with point at the tip. (7) (a=r=g=n).
23d. Former state of north-west India. (7) (u===p=r)
26a. German river flowing into the Moselle. (4) (===r) Oder? TIA...
22a. Vegetarian food contributing to cost of upkeep. (4) (=o==).
19d. Car is still in this indeterminate colour. (7) (n===r=l).
Is it root and natural? TIA...
57a. Pen name of the novelist who wrote Living, Party Going, Loving, Back and Concluding. (5) (=r=e=).
58a. One of the four disciplines in the Pony Club event tetrathlon. (7)
(=u=n=n=) TIA...
23a. Saddle hurtful with one aboard little horse endlessly. (7) (p===i=n). 26a. Bribe with £500 someone to fix things. (6,6) (=r=a-e =o===y). 19d. Steer three characters from Istanbul to join Yale,...