https://www.mtggoldfish.com/articles/playing-pauper-mono-green-infect

4 Rugged Highland
3 Gruul Turf
2 Teetering Peaks
20 lands
4 Reckless Charge
4 Temur Battle Rage
sb
3 Pyroblast
3 Flame Slash
2 Flaring Pain
2 Electrickery
http://www.numotgaming.com/the-pauper-flophouse-11-reckless-infect/

http://www.daltenda.com/infect-pauper/
http://puremtgo.com/articles/arctic-pauper-show-%E2%80%93-mono-green-infect-10

http://www.mtgsalvation.com/forums/the-game/magic-online-formats/pauper/developing/526587-infect

http://tappedout.net/mtg-decks/bug-infect-pauper-2nd-turn-win/
http://puremtgo.com/articles/arctic-pauper-show-%E2%80%93-ug-infect-10

http://www.mtgsalvation.com/forums/the-game/casual-related-formats/paper-pauper-and-peasant/paper-pauper-and-peasant-primers/177226-primer-pauper-infect

http://www.metagame.it/articoli-pauper/2426-storia-del-pauper-parte-1.html

Fog: for fast aggro-combo decks like Infect and Eye Candy taking out Predator's Strike
Giant Growth: a replacement pump for when Mutagenic Growth or Predator's Strike come out
Hornet Sting: against white decks with Standard Bearer also the mirror
Nature's Claim: artifact and enchantment decks
Ranger's Guile: more protection against targeted removal
Corpse Cur: against hard removal in Red/Black decks, take out the Rot Wolfs for these

Delver Fae
-3 Predator's Strike, -3 Mutagenic Growth | +3 Hornet Sting, +3 Ranger's Guile
Turn one Glistener Elf is very difficult for them to deal with. If they show you Piracy Charm keep the Mutagenic Growths and take out Rancor.
MBC
-2 Mutagenic Growth | +2 Corpse Cur
Burn
-4 Mutagenic Growth, -2 Rot Wolf | +1 Giant Growth, +3 Ranger's Guile, +2 Corpse Cur
Kuldotha Boros
-3 Predator's Strike, -3 Phytoburst | +2 Nature's Claim, +2 Ranger's Guile, +2 Corpse Cur
RUG Tron
-3 Mutagenic Growth | +3 Nature's Claim
Dimir Teachings
-3 Predator's Strike, -2 Rot Wolf | +3 Ranger's Guile, +2 Corpse Cur
Eye Candy
-3 Predator's Strike | +2 Fog, +1 Giant Growth
Counterburn
- 3 Predator's Strike, -2 Rancor | + 3 Ranger's Guile, + 2 Corpse Cur
Keep mana and protection up to dodge burn.
Affinity
-4 Mutagenic Growth, -3 Phytoburst | +4 Nature's Claim, +3 Ranger's Guile
White Warriors
-4 Mutagenic Growth, -2 Groundswell | +3 Hornet Sting, +3 Nature's Claim
Goblins
-1 Predator's Strike | +1 Giant Growth
Elf Bomb
-4 Mutagenic Growth, -1 Groundswell | +3 Hornet Sting, +2 Nature's Claim
Infect
-3 Predator's Strike, -3 Phytoburst | +2 Fog, +1 Giant Growth, +3 Hornet Sting
Luck dependent
Domain Zoo
-1 Predator's Strike | +1 Giant Growth
RDW
-4 Mutagenic Growth, -1 Rancor | +3 Ranger's Guile, +2 Corpse Cur
Hexproof Auras
-3 Mutagenic Growth | +3 Hornet Sting
Hornet Sting is to kill Standard Bearer, alternatively you can use Apostle's Blessing on it and go for a one-shot kill.
MUC
-1 Mutagenic Growth | +1 Giant Growth
Winter Zoo
No sideboarding
Stompy
-1 Phytoburst  | +1 Giant Growth