The top half went in very smoothly, then the SW corner slowed me down a little. There were no obscure classical references and no obscure flora or fauna, but what seemed an unusual number of clues using only the outside, or only the inside, of words. My only MER (minor eyebrow raise) was at the answer to 6dn. As ugly a word as you’re likely to see!
My clue of the day was 10ac, for the artistic way the answer was hidden! Thanks to the setter for a very enjoyable puzzle.
Clues are in blue, with definitions underlined. Answers are in BOLD CAPS, then wordplay. (ABC*) means 'anagram of ABC'. Deletions are in [square brackets].
In support of what I hope will become a campaign to urge the club site to use a font with serifs, so we poor solvers can tell the difference between yam and yarn for example, this blog is in Times New Roman font. What could be more appropriate?
1 Overweight Florida infant burying its head (6)
FLABBY: FL (Florida), BABY (infant), with the leading B moved inside (“buried”). An inventive piece of wordplay.
4 Idiot bowled over extremely naive leader (8)
BONEHEAD: B (bowled), O (over), N[aiv]E, HEAD (leader).
10 Duck swimmer sees, partially (7)
IMMERSE: hidden answer.
11 Cutting maple branch is complicated to start with (7)
ACERBIC: ACER (maple), then B-I-C: the letters that the next three words start with.
12 Surge? This does, regularly (4)
TIDE: odd letters of ThIs DoEs.
13 Surprised Oscar, about to get into bed (10)
BEWILDERED: WILDE (Oscar, that is) and RE (about), both getting into BED.
15 Student corrected Galileo and Newton on speed of light (9)
COLLEGIAN: “corrected” (anagram) of (GALILEO N*), after C (the speed of light). N is the symbol for newton (without a capital N), the unit of force in the SI system (which includes kilograms, metres etc).
16 Hard punches ruptured spine (5)
THORN: H (hard) in TORN (ruptured).
18 Followed three females leaving far-off area of Home Counties (5)
AROSE: take the F’s out of
19 Green bottle's contents swirling in glasses (9)
LORGNETTE: “swirling” (anagram) of (GREEN OTTL*), where “bottle’s contents” says to lose the first and last letters of [b]OTTL[e].
21 Heartsick depression about cut foot (10)
DESPONDENT: DENT around SPONDE[e].
23 Skinned shins and arm? (4)
LIMB: [c]LIMB[s] meaning “shins”, as in "shins up the drainpipe", “skinned” of outside letters.
26 Recluse just recalled sex with ecstasy (7)
EREMITE: EREM=MERE (just), “recalled”; IT (sex); E (ecstasy).
27 Chair is deep but not wide, long but not hard (7)
LOUNGER: LO[w] (deep, minus W); [h]UNGER (long, minus H).
28 Rustic couple at first laboured in silence (8)
YOKELISH: YOKE (couple), L (laboured, at first), I (in, also at first), SH (silence!).
29 Cross new wife briefly chasing gutless hubby (6)
HYBRID: H[ubb]Y (“gutless”), b[RIDE].
1 Force isn't commonly weak (5)
FAINT: F (force), AIN’T (isn’t, “commonly”).
2 I am a droll, peculiar creature (9)
ARMADILLO: “peculiar” (anagram) of (I AM A DROLL*).
3 Expose stomach, reportedly (4)
BARE: sounds like BEAR (stomach, “reportedly”).
5 Love helping in lecture (7)
ORATION: O (love), RATION (helping).
6 English blokes becoming obsolete — or improving? (10)
EMENDATING: E (English), MEN (blokes), DATING (becoming obsolete). Not a word I would ever use!
7 Kind of sleep-deprived, think back and glower (5)
EMBER: REMEMBER (think back), deprived of its REM sleep.
8 Moral decline of 1960s for example initially narked church (9)
DECADENCE: DECADE (1960s, say), N (initially Narked), CE (church).
9 Arab sheikhs finally shunning sycophants on island (6)
YEMENI: YE[s]MEN (sycophants, shunning the S at the end of sheikS); I (island).
14 Ritual involving one miracle (10)
CEREMONIAL: involving” (anagram) of (ONE MIRACLE*).
15 Whine about stock in candle shop (9)
CHANDLERY: CRY (whine) around HANDLE (stock). I didn’t realise a chandler sold candles! I only knew of ship’s chandlers.
17 Heading away, the solver set off in boat (9)
OUTRIGGER: [y]OU (the solver, “heading away”); TRIGGER (set off).
19 Lancashire's opener is lazy, small and uncapped (7)
LIDLESS: L for Lancashire, IDLES, S for small.
20 Out-and-out lies oddly cause resentment (6)
RANKLE: RANK (out-and-out), then odd letters of LiEs.
22 Elegant ships poetically capsizing (5)
SLEEK: KEELS “capsizing”.
24 Short of things to do, maybe, old dons procreated (5)
BORED: O for old “dons” BRED (procreated).
25 Gloomily disheartened, as expected (4)
DULY: DU[l]LY, “disheartened”.