diff --git a/overviewer_core/textures.py b/overviewer_core/textures.py
index 7b8f743..5517391 100644
--- a/overviewer_core/textures.py
+++ b/overviewer_core/textures.py
@@ -1693,6 +1693,49 @@ def generate_special_texture(blockID, data):
         
         return generate_texture_tuple(img, blockID)
 
+    if blockID == 99 or blockID == 100: # huge brown and red mushroom
+        if blockID == 99: # brown
+            cap = terrain_images[126]
+        else: # red
+            cap = terrain_images[125]
+        stem = terrain_images[141]
+        porous = terrain_images[142]
+        
+        if data == 0: # fleshy piece
+            img = _build_full_block(porous, None, None, porous, porous)
+
+        if data == 1: # north-east corner
+            img = _build_full_block(cap, None, None, cap, porous)
+
+        if data == 2: # east side
+            img = _build_full_block(cap, None, None, porous, porous)
+
+        if data == 3: # south-east corner
+            img = _build_full_block(cap, None, None, porous, cap)
+
+        if data == 4: # north side
+            img = _build_full_block(cap, None, None, cap, porous)
+
+        if data == 5: # top piece
+            img = _build_full_block(cap, None, None, porous, porous)
+
+        if data == 6: # south side
+            img = _build_full_block(cap, None, None, cap, porous)
+
+        if data == 7: # north-west corner
+            img = _build_full_block(cap, None, None, cap, cap)
+
+        if data == 8: # west side
+            img = _build_full_block(cap, None, None, porous, cap)
+
+        if data == 9: # south-west corner
+            img = _build_full_block(cap, None, None, porous, cap)
+
+        if data == 10: # stem
+            img = _build_full_block(porous, None, None, stem, stem)
+
+        return generate_texture_tuple(img, blockID)
+
     if blockID == 101 or blockID == 102: # iron bars and glass panes
         if blockID == 101:
             # iron bars
@@ -1961,7 +2004,34 @@ def convert_data(blockID, data):
             elif (data & 0b0011) == 1: data = data & 0b1100 | 3
             elif (data & 0b0011) == 2: data = data & 0b1100 | 1
             elif (data & 0b0011) == 3: data = data & 0b1100 | 0
-
+    if blockID == 99 or blockID == 100: # huge red and brown mushroom
+        if _north == 'upper-left':
+            if data == 1: data = 3
+            elif data == 2: data = 6
+            elif data == 3: data = 9
+            elif data == 4: data = 2
+            elif data == 6: data = 8
+            elif data == 7: data = 1
+            elif data == 8: data = 4
+            elif data == 9: data = 7
+        elif _north == 'upper-right':
+            if data == 1: data = 9
+            elif data == 2: data = 8
+            elif data == 3: data = 7
+            elif data == 4: data = 6
+            elif data == 6: data = 4
+            elif data == 7: data = 3
+            elif data == 8: data = 2
+            elif data == 9: data = 1
+        elif _north == 'lower-right':
+            if data == 1: data = 7
+            elif data == 2: data = 4
+            elif data == 3: data = 1
+            elif data == 4: data = 2
+            elif data == 6: data = 8
+            elif data == 7: data = 9
+            elif data == 8: data = 6
+            elif data == 9: data = 3
     return data
 
 def tintTexture(im, c):
@@ -2056,7 +2126,7 @@ def getBiomeData(worlddir, chunkX, chunkY):
 special_blocks = set([ 2,  6,  9, 17, 18, 20, 26, 23, 27, 28, 29, 31, 33,
                       34, 35, 43, 44, 50, 51, 53, 54, 55, 58, 59, 61, 62,
                       63, 64, 65, 66, 67, 68, 71, 75, 76, 79, 85, 86, 90,
-                      91, 92, 93, 94, 96, 101, 102, 108, 109])
+                      91, 92, 93, 94, 96, 99, 100, 101, 102, 108, 109])
 
 # this is a map of special blockIDs to a list of all 
 # possible values for ancillary data that it might have.
@@ -2104,6 +2174,8 @@ special_map[92] = range(6) # cake, eaten amount, (not implemented)
 special_map[93] = range(16) # OFF redstone repeater, orientation and delay
 special_map[94] = range(16) # ON redstone repeater, orientation and delay
 special_map[96] = range(8)  # trapdoor, open, closed, orientation
+special_map[99] = range(11) # huge brown mushroom, side, corner, etc, piece
+special_map[100] = range(11) # huge red mushroom, side, corner, etc, piece
 special_map[101]= range(16)  # iron bars, all the possible combination, uses pseudo data
 special_map[102]= range(16)  # glass panes, all the possible combination, uses pseudo data
 special_map[108]= range(4)  # red stairs, orientation