EDIT: I'm no longer updating this post, but I'm still regularly updating the page on the druid wiki, so check there :-)
URL:
http://druid.wikispaces.com/Healing+Gear+List
About the notation: I start with some info about the item, the rarity and itemlevel of the item, and add a few words if the item is special in any way (cloth, socketed, set (with bonuses that are beneficial for druids), hybrid stats). I add a * in front of the name when I think this is one of the best options available for a resto druid. Then the name, and the location and boss that drops it.
Also added "Lifebloom points" to each item, a valuation of the item when used for the purpose of keeping up lifebloom/rejuv on the tank(s) for an entire bossfight. I used the following stat-values: 1 mp/5 equals 5.82 int equals 5.5 +heal equals 4.49 spi, and 1 metagem equals 20 mp/5.
* e = Epic
* r = Rare
Equip
Head
LB 66.24 (e146 socketed set) *Thunderheart Helmet - Battle for Mount Hyjal, Archimonde
LB 65.45 (e141 socketed) *Guise of the Tidal Lurker - The Black Temple, High Warlord Naj'entus
LB 62.73 (e133 socketed set) *Nordrassil Headguard - Serpentshrine Cavern, Lady Vashj
LB 61.09 (e141 cloth socketed) Cowl of Benevolence - The Black Temple, Teron Gorefiend
LB 56.5 (e120 socketed set) *Crown of Malorne - Karazhan, Prince Malchezaar
LB 55.84 (e127 requires Engineering 350) *Wonderheal XT40 Shades - crafted bop
LB 54.79 (e146 socketed set) Vengeful Gladiator's Kodohide Helm - Arena Reward, Season 3
LB 50.77 (e136 socketed set) Merciless Gladiator's Kodohide Helm - Arena Reward, Season 2
LB 48.35 (e123 socketed set) Gladiator's Kodohide Helm - PVP Reward
LB 47.34 (e110 cloth socketed) Cowl of Naaru Blessings - vendor-sold for Heroic Badges
LB 47.16 (e133 cloth socketed) Hood of the Third Eye - Zul'Aman, Hex Lord Malacrass
LB 45.19 (e105 cloth socketed set) Whitemend Hood - crafted, boe tailoring (350 required for set bonus)
LB 44.86 (r115 cloth socketed) *Hallowed Crown - The Arcatraz, Harbinger Skyriss
LB 42.94 (r115 socketed hybrid set) Moonglade Cowl - The Botanica, Warpsplinter
LB 40.35 (e128 socketed) Helm of Natural Regeneration - Zul'Aman, Jan'alai
LB 40.22 (r115 socketed set) Grand Marshal's Kodohide Helm - PVP Reward
LB 37.17 (e138 cloth) Crown of the Sun - The Eye, Kael'thas Sunstrider
LB 31.52 (e125) Cowl of Nature's Breath, Gruul's Lair, Gruul the Dragonkiller
LB 28.04 (e115 cloth) Headdress of the High Potentate - Karazhan, Chess Event
LB 26.75 (r100 socketed hybrid) *Raven-Heart Headdress - Auchenai Crypts, Shirrak the Dead Watcher
LB 25.66 (e105) Hood of Primal Life - crafted, world drop pattern
LB 23.56 (r115 cloth) Watcher's Cowl - Cenarion Expedition, Revered
LB 23.55 (r115) Crown of the Forest Lord - Heroic The Underbog, Swamplord Musel'ek
LB 23.42 (109 socketed) Druidic Helmet of Second Sight - Shadowmoon Valley, group quest
LB 22.46 (r100 cloth) Collar of Command - Auchenai Crypts, Shirrak the Dead Watcher
Neck
LB 24.76 (e141) *Nadina's Pendant of Purity - The Black Temple, Mother Shahraz
LB 24.45 (e138) *Lord Sanguinar's Claim - Tempest Keep, Quest Reward (drop of Kael'thas Sunstrider)
LB 24.22 (e125) *Teeth of Gruul - Gruul's Lair, Gruul the Dragonkiller
LB 22.88 (e115) *Emberspur Talisman - Karazhan, Nightbane
LB 21.14 (e141 socketed) Vindicator's Pendant of Salvation - PVP Reward, Season 3
LB 21.95 (e128) Brooch of Nature's Mercy - Zul'Aman, Akil'zon
LB 18.54 (r115) Necklace of Resplendent Hope - Heroic Old Hillsbrad Foothills, Epoch Hunter
LB 17.53 (r115) *Sethekk Oracle's Focus - Sethekk Halls, quest
LB 17.41 (e120) Archaic Charm of Presence - Shadowmoon Valley, Doomwalker
LB 17.06 (r103) *Natasha's Guardian Cord - Blade's Edge Mountains, solo quest
LB 16.22 (e115) Shining Chain of the Afterworld - Karazhan, Netherspite
LB 16.21 (e110) Necklace of Eternal Hope - vendor-sold for Heroic Badges
LB 15.17 (r100) Earthen Mark of Health - Nagrand, group quest
LB 14.85 (r113) Living Ruby Pendant - crafted, world drop pattern
LB 14.81 (r97) Amulet of Sanctification - world drop
LB 14.75 (r109) Karja's Medallion - Netherstorm, group quest
LB 13.89 (r115) Swampstone Necklace - Heroic The Underbog, Swamplord Musel'ek
LB 13.10 (r115) Choker of Fluid Thought - The Arcatraz, Harbinger Skyriss
LB 12.34 (r103) Diamond Prism of Recurrence - Old Hillsbrad Foothills, Epoch Hunter
LB 9.55 (r100) Ogre Slayer's Pendant - Nagrand, group quest
LB 9.18 (r115) A'dal's Recovery Necklace - The Arcatraz, quest
Shoulder
LB 41.34 (e146 socketed set) *Thunderheart Spaulders - The Black Temple, Mother Shahraz
LB 36.63 (e133 socketed set) *Nordrassil Life-Mantle - Tempest Keep, Void Reaver
LB 33.45 (e120 socketed set) *Shoulderguards of Malorne - Gruul's Lair, High King Maulgar
LB 30.08 (e115 cloth) *Pauldrons of the Solace-Giver - Karazhan, The Curator
LB 29.83 (e128 socketed) *Gnarled Ironwood Pauldrons - vendor-sold for Heroic Badges
LB 29.73 (e105 cloth set) *Primal Mooncloth Shoulders - bop crafted mooncloth tailoring
LB 29.28 (e138) Runetotem's Mantle - Serpentshrine Cavern, Lady Vashj
LB 28.79 (e141) Veil of Turning Leaves - The Black Temple, Illidari Council
LB 28.22 (e141 cloth) Amice of Brilliant Light - The Black Temple, Shade of Akama
LB 25.82 (e146 socketed set) Vengeful Gladiator's Kodohide Spaulders - Arena Reward, Season 3
LB 23.23 (e136 socketed set) Merciless Gladiator's Kodohide Spaulders- Arena Reward, Season 2
LB 22.42 (r115 cloth socketed) *Hallowed Pauldrons - Shadow Labyrinth, Grandmaster Vorpil
LB 22.33 (e123 socketed set) Gladiator's Kodohide Spaulders- PVP Reward
LB 22.16 (e115) Forest Wind Shoulderpads - Karazhan, The Curator
LB 20.89 (r115 cloth) Vestia's Pauldrons of Inner Grace - The Mechanar, Cache of the Legion
LB 20.34 (r115 socketed hybrid set) Moonglade Shoulders - The Steamvault, Warlord Kalithresh
LB 19.51 (e141) Shoulderpads of Renewed Life - crafted, Black Temple recipe
LB 17.86 (r103 socketed hybrid) Ravenwing Pauldrons - Old Hillsbrad Foothills, Lieutenant Drake
LB 16.85 (r115) Mantle of Autumn - The Botanica, Laj
LB 16.64 (r115 socketed set) Grand Marshal's Kodohide Spaulders - PVP Reward
Back
LB 26.26 (e141) *Shroud of the Final Stand - The Black Temple/Battle for Mount Hyjal, Trash
LB 22.54 (e138) *Sunshower Light Cloak - Tempest Keep, Kael'thas Sunstrider
LB 22.04 (e141) Shroud of Forgiveness - The Black Temple, Gurtogg Bloodboil
LB 20.45 (e125) *Stainless Cloak of the Pure-Hearted - Karazhan, Prince Malchezaar
LB 19.38 (e115) Red Riding Hood's Cloak - Karazhan, The Big Bad Wolf
LB 19.17 (e110) *Bishop's Cloak - vendor-sold for Heroic Badges
LB 18.73 (e100) *Lifegiving Cloak - world drop
LB 18.54 (r115) Cloak of the Everliving - Heroic Hellfire Ramparts, Watchkeeper Gargolmar
LB 18.38 (r115) *Avian Cloak of Feathers - Sethekk Halls, Talon King Ikiss
LB 17.73 (e136) Kharmaa's Shroud of Hope - vendor-sold for Heroic Badges
LB 17.62 (r112) White Remedy Cape - crafted, world drop pattern
LB 17.26 (r115) Vicar's Cloak/Mantle of Vivification - The Shattered Halls, quest
LB 16.15 (e151) Shroud of the Highborne - The Black Temple, Illidan Stormrage
LB 14.42 (r115) Cloak of Scintillating Auras - The Arcatraz, Zereketh the Unbound
LB 13.92 (r112) Cloak of Whispering Shells - The Steamvault, Hydromancer Thespia
LB 13.47 (e110) Light-Touched Stole of Altruism - Heroic Auchenai Crypts, Exarch Maladaar
LB 13.02 (r97) Cloak of Revival - Mana-Tombs, Tavarok
LB 12.58 (e128) Cloak of Ancient Rituals - Zul'Aman, Hex Lord Malacrass
LB 11.60 (r94) *Cloak of Healing Rays - The Underbog, Ghaz'an
LB 11.25 (r115) Sha'tari Anchorite's Cloak - The Botanica/The Mechanar, quest
Chest
LB 54.48 (e146 socketed set) *Thunderheart Tunic - The Black Temple, Illidan Stormrage
LB 47.02 (e141 cloth) Garments of Temperance - The Black Temple, Gurtogg Bloodboil
LB 46.21 (e120 cloth socketed set) *Primal Mooncloth Robe - crafted bop mooncloth tailoring
LB 43.76 (e133 socketed set) *Nordrassil Chestguard - Tempest Keep, Kael'thas Sunstrider
LB 43.60 (e128 cloth socketed) *Robes of Heavenly Purpose - Zul'Aman, Nalorakk
LB 43.03 (e128) Shimmer-pelt Vest - Zul'Aman, Halazzi
LB 42.67 (e146 socketed set) Vengeful Gladiator's Kodohide Tunic - Arena Reward, Season 3
LB 37.68 (e120 socketed set) Chestguard of Malorne - Magtheridon's Lair, Magtheridon
LB 37.35 (e136 socketed set) Merciless Gladiator's Kodohide Tunic - Arena Reward, Season 2
LB 35.94 (e115) *Stonebough Jerkin - Karazhan, Nightbane
LB 35.87 (e141) Don Rodrigo's Poncho - Battle for Mount Hyjal, Azgalor
LB 35.78 (e120 socketed set) Windhawk Hauberk - crafted bop tribal leatherworking
LB 33.06 (e128) Gnarled Chestpiece of the Ancients - Serpentshrine Cavern, Morogrim Tidewalker
LB 31.52 (r115 cloth socketed) *Hallowed Garments - Shadow Labyrinth, Murmur
LB 30.08 (r115) Raiments of Nature's Breath - Heroic Hellfire Ramparts, Reinforced Fel Iron Chest
LB 29.89 (r115 cloth) Robe of Effervescent Light - Heroic The Blood Furnace, Keli'dan the Breaker
LB 29.56 (e115 cloth) Masquerade Gown - Karazhan, Julianne
LB 29.46 (e123 socketed set) Gladiator's Kodohide Tunic - PVP Reward
LB 26.87 (r115 hybrid socketed set) Moonglade Robe - The Mechanar, Pathaleon the Calculator
LB 26.85 (r88 cloth socketed) *Raiments of Divine Authority - The Blood Furnace, Keli'dan the Breaker
LB 26.31 (r115 socketed set) Grand Marshal's Kodohide Tunic - PVP Reward
LB 24.70 (r106 cloth) Shroud of Spiritual Purity - world drop
LB 22.94 (r100) Living Crystal Breastplate - bop crafted tribal leatherworking
LB 22.21 (r106) Lifewarden's Breastplate - Netherstorm, group quest
LB 19.14 (r103 cloth) Watcher's Tunic - Nagrand, group quest