Across
One avoiding heat rests - these may act as sunshades (8)
Followed English and American backing in conclusion (6)
I haven't cracked this one yet — but Fifteensquared have:
( E [English] + US [United States; American]) all reversed (backing) and contained in (in) END (conclusion)
Nothing in money supply? A very small amount (4)
Works appear rash to put things another way (10)
Contribution to 1 say left out connection with drug (6)
Describing leaves: couple mostly greenish-blue (8)
Urban conditions perhaps not experienced in small place (6)
I haven't cracked this one yet — but Fifteensquared have:
RAW (inexperienced) contained in (in) ( S [small] + PL [place])
Stamp involving small US state in a row (6)
Gas in any way curtailed about newborns (8)
I go astray in South American mountain range (6)
I haven't cracked this one yet — but Fifteensquared have:
( I + ERR [go astray]) contained in (in) SA (South America)
Breeder Frenchman perhaps taken aback about sex (10)
I haven't cracked this one yet — but Fifteensquared have:
RENÉ (name of a French male; Frenchman) reversed (taken aback) containing (about) GENDER (sex)
Novice reflected? That’s a good thing (4)
Italian monster namely reverse of friend (6)
Broadcasting on air with the dubious leading figure (8)
Down
Is harrowing about it in literary work (8)
Sources of any largely uncommon metal provide metallic salt (4)
I haven't cracked this one yet — but Fifteensquared have:
ALUM ( first letters of [sources of] each of A NY, L ARGELY, U NCOMMON and M ETAL)
Persistent hanger-on exhausted visitor from far away? (6)
Reminder to look up when taking drink in Japan (8)
Rectories I fancy may be location of (10)
I haven't cracked this one yet — but Fifteensquared have:
Anagram of (fancy) RECTORIES and I
Stretch of water’s about devoid of life mostly after introduction of sulphur (6)
I haven't cracked this one yet — but Fifteensquared have:
RE (with reference to; about) + ( DEA D [devoid of life) excluding the final letter [mostly] containing [after introduction of] S [chemical symbol for sulphur])
Stone on dress flashing in light (6)
Player in old plays missing climax from tricksy Italian playwright (10)
Take away sense over hospital? Part of it goes into reverse (8)
I haven't cracked this one yet — but Fifteensquared have:
WIT (sense) + H (hospital) + WARD (part of a hospital) reversed (goes into reverse) As this is a down entry the letter W is placed over all the other letters in the entry
Left pig covered in pig fat (8)
Latin praise? Attempt to keep Latin manner up (6)
I haven't cracked this one yet — but Fifteensquared have:
( GO [attempt] containing [to keep] L [Latin]) + AIR (manner) reversed (up; down entry)
Picked up hot hint about a Parisian castrato? (6)
I haven't cracked this one yet — but Fifteensquared have:
( H [hot] + [ CUE {hint} containing {about} UN {French for ‘a’}]) all reversed (picked up; down entry)
A dessert’s served up in layers (6)
I haven't cracked this one yet — but Fifteensquared have:
( A + TART’S [dessert’s]) reversed (served up; down entry)
Scientist foremost among best of historical researchers (4)
Type letters or click words in the clue