yeah ! i can help you in plant identification. 

2-Populus

3-Salix

4-Populus sp.2.

6-Brassicaceae

9-Lamiaceae cf. Nepeta

11, 15 -Asteraceae , cf. Helicrisium

14- Fabaceae , Astragalus

OK for 2,3,4, and 6

8 probably Artemisia, 9 Salvia vel Nepeta indeed, 11 Asteraceae, 15 Helichrysum

5: cf. Lepidium latifolium

17: Capparis

Picture 6: It is Aphragmus oxycarpus (Hook.f. & Thomson) Jafri of family Brassicaceae

Picture 8: It looks Ajania gracilis (Hook.f. & Thomson) Poljakov ex Tzvelev of family Asteraceae

Picture 9: It is Nepeta floccosa Benth. of family Lamiaceae

Picture 17: It looks Capparis spinosa L. of family Capparaceae

2 & 4 Populus nigra L.

3 Salix sp. (cf. S. fragilis or S. pentandra)

5 Compositae (perhaps Parthenium hysterophorus, strongly smelling)

8, 18 Cruciferae (compare Alyssum murale aggr.)

11 Compositae (cf. Tanacetum)

14 Camphorosma monspeliaca L.

15 cf. Achillea wilhelmsii C. Koch

16 Beta vulgaris L.

17 Capparis spinosa aggr. (cf. C. sicula)

Picture 7: It could be Allium przewalskianum Regel of family Amaryllidaceae

14- Fabaceae , Astragalus

I think that pictures 11 and 15 are Helichrysum

Picture 17: Capparis spinosa

Picture 9: Phlomoides sp.