ACROSS
1 Gone in moments? Not from my recall! (9)
MNEMONIST – (IN MOMENTS*) [“gone”], semi-&lit
6 Hydrophobia clears pub and couples outside, as Perth’s wet (5)
DROOB – {hy}DRO{ph}OB{ia}. In Australia, an “ineffectual person”.
9 Leaf in pool: Olympics and even parts of archery spoiled (15)
MICROSPOROPHYLL – (POOL OLYMPICS {a}R{c}H{e}R{y}*) [“spoiled”]
10 Cutting from alstroemeria in large glass (6)
ROEMER – hidden in {alst}ROEMER{ia}. First one in.
11 Foreign elements in framework overturned vote for Houses of Parliament on core of Brexit (8)
XENOPHYA – reverse all of AY HP ON {br}EX{it}
13 Notably flipping round, I hobnob in Europe with cunning (10)
EXIMIOUSLY – reverse O I MIX [round | I | hobnob] inside EU [Europe], then add SLY [cunning]
14 For commentator, top-class rowers showing natural colour (4)
ECRU – sounds like A-CREW
16 Tree frog first excluded from major taxonomic groups (4)
HYLA – {p}HYLA
17 Turkish liquor seller sent over that old nuclear containment structure (10)
PERIKARYON – reverse RAKI REP [Turkish liquor seller] and add YON [that (old)]
19 Royal backing to arrest antiquer (8)
REGALIAN – reverse NAIL AGER [to arrest | antiquer]
20 Soothing voice’s last thing needed in veteran clown (6)
ANETIC – {voic}E in ANTIC [“veteran” clown]
23 Personnel wearing frilly waterproof shirt, ruined by one sweet wine (8,7)
LACHRYMA CHRISTI – HR [personnel] “wearing” LACY [frilly] + MAC [waterproof] + (SHIRT*) [“ruined”] by I [one]
24 Cheerful one leaves, returning provincial prepares for Thatcher (5)
YELMS – reversed SM{i}LEY [cheerful, that I = “one” leaves]
25 Bomb survivor greeting Azerbaijan city’s expression of triumph (9)
HIBAKUSHA – HI BAKU’S HA [greeting | Azerbaijan city’s | expression of triumph]
DOWN
1 Norse giant runs under noted TB-ridden sewer (5)
MIMIR – R [runs] under MIMI. “Noted” as in “musical”, “sewer” as in “embroiderer” – go look up the Wikipedia entry for Puccini’s La bohème, if you’re still at all confused.
2 Goon evacuated into nearby pub welcomes soldier concerned with church buildings? (15)
ECCLESIOLOGICAL – ECCLES [Goon] + I{nt}O + LOCAL [nearby pub] “welcomes” GI [soldier]
3 Making mountains of rice, go on boiling (8)
OROGENIC – (RICE, GO ON*) [“boiling”]
4 Current house-sitters making repairs (for a wing) (4)
IMPS – I [current] + MP’S [house-sitters, the House being parliament]. To “imp” is a wonderful word which means “to engraft a hawk or falcon’s wing or tail with new feathers in order to repair broken feathers or improve flight”. I do like the idea of just randomly souping up a perfectly good falcon.
5 Note echo reduced in check for top of rampart (10)
TERREPLEIN – TE [note] + REPL{y} [echo “reduced”] in REIN [check]
6 To cover hoop, mostly taking in silk fabric (6)
DUPION – to cover O [hoop], DUPIN{g} [“mostly” taking in]
7 Scandalous hypocrisy on cost for ingrowing toenail (15)
ONYCHOCRYPTOSIS – (HYPOCRISY ON COST*) [“scandalous”]
8 Plain Philippine president shortened ceremonial canopy (9)
BALDAQUIN – BALD [plain] + AQUIN{o} [Philippine president “shortened”]. Was it in the last Times Champs that we saw BALDACHIN?
12 Garden site authority constrained by Lutheran’s half-heartedness (10)
LUKEWARMTH – KEW ARM [garden site | authority] “constrained” by LUTH.
13 Record hourly limits to testify in old magistrate’s office (9)
EPHORALTY – EP HORAL [record | hourly] + T{estif}Y
15 Artist called up fine source for Götterdämmerung (8)
RAGNAROK – RA [artist] + reversed RANG [called] + OK [fine]
18 Group for rodents and lagomorphs needing pre-euro amounts in guineas (6)
GLIRES – LIRE [pre-euro amounts] in G’S [guineas]
21 Police Department catching villain at last with a Stinger (6)
CNIDA – CID [Police Department] “catching” {villai}N + A
22 Specifically muscle in to work when others are out (4)
SCAB – SC. AB [specifically | muscle]
and please don’t get dispirited by the dearth of comments; I’m sure there are many, like me, who are content to lurk, read and enjoy without comment (who’s going to read them this late anyway?)
jb