diff --git a/bushes/init.lua b/bushes/init.lua
index a2a3213..1ca6023 100644
--- a/bushes/init.lua
+++ b/bushes/init.lua
@@ -207,7 +207,7 @@ plantslib:register_generate_plant({
     min_elevation = 1, -- above sea level
 	plantlife_limit = -0.9,
   },
-  "abstract_bushes.grow_bush"
+  abstract_bushes.grow_bush
 )		
 
  abstract_bushes.grow_youngtree2 = function(pos)
@@ -252,7 +252,7 @@ plantslib:register_generate_plant({
     min_elevation = 1, -- above sea level
 	plantlife_limit = -0.9,
   },
-  "abstract_bushes.grow_youngtree2"
+  abstract_bushes.grow_youngtree2
 )	
 	 
 		--http://dev.minetest.net/Node_Drawtypes
diff --git a/dryplants/juncus.lua b/dryplants/juncus.lua
index 093d35f..9dedcbd 100644
--- a/dryplants/juncus.lua
+++ b/dryplants/juncus.lua
@@ -102,7 +102,7 @@ plantslib:register_generate_plant({
 	near_nodes_count = 1,
     plantlife_limit = -0.9,
   },
-  "abstract_dryplants.grow_juncus"
+  abstract_dryplants.grow_juncus
 )
 -- at dunes/beach
 plantslib:register_generate_plant({
@@ -123,5 +123,5 @@ plantslib:register_generate_plant({
 	near_nodes_count = 1,
     plantlife_limit = -0.9,
   },
-  "abstract_dryplants.grow_juncus"
+  abstract_dryplants.grow_juncus
 )
diff --git a/dryplants/meadowvariation.lua b/dryplants/meadowvariation.lua
index da46294..025733c 100644
--- a/dryplants/meadowvariation.lua
+++ b/dryplants/meadowvariation.lua
@@ -22,5 +22,5 @@ plantslib:register_generate_plant({
     min_elevation = 1, -- above sea level
 	plantlife_limit = -0.9,
   },
-  "abstract_dryplants.grow_grass_variation"
+  abstract_dryplants.grow_grass_variation
 )
diff --git a/dryplants/moregrass.lua b/dryplants/moregrass.lua
index 3587806..75218e0 100644
--- a/dryplants/moregrass.lua
+++ b/dryplants/moregrass.lua
@@ -30,5 +30,5 @@ plantslib:register_generate_plant({
     min_elevation = 1, -- above sea level
 	plantlife_limit = -0.9,
   },
-  "abstract_dryplants.grow_grass"
+  abstract_dryplants.grow_grass
 )
diff --git a/dryplants/reedmace.lua b/dryplants/reedmace.lua
index 88d9f76..3a01385 100644
--- a/dryplants/reedmace.lua
+++ b/dryplants/reedmace.lua
@@ -363,7 +363,7 @@ plantslib:register_generate_plant({
 	near_nodes_count = 1,
     plantlife_limit = -0.9,
   },
-  "abstract_dryplants.grow_reedmace"
+  abstract_dryplants.grow_reedmace
 )
 -- in water
 plantslib:register_generate_plant({
@@ -386,7 +386,7 @@ plantslib:register_generate_plant({
 	near_nodes_count = 1,
     plantlife_limit = -0.9,
   },
-  "abstract_dryplants.grow_reedmace_water"
+  abstract_dryplants.grow_reedmace_water
 )
 -- for oases & tropical beaches & tropical swamps
 plantslib:register_generate_plant({
@@ -406,5 +406,5 @@ plantslib:register_generate_plant({
 	near_nodes_count = 1,
     plantlife_limit = -0.9,
   },
-  "abstract_dryplants.grow_reedmace"
+  abstract_dryplants.grow_reedmace
 )
diff --git a/ferns/fern.lua b/ferns/fern.lua
index 29e0edc..fa4d99b 100644
--- a/ferns/fern.lua
+++ b/ferns/fern.lua
@@ -151,7 +151,7 @@ plantslib:register_generate_plant({ -- near trees (woodlands)
     temp_max = -0.5, -- 55 °C (too hot?)
     temp_min = 0.75, -- -12 °C
   },
-  "abstract_ferns.grow_fern"
+  abstract_ferns.grow_fern
 )
 end
 
@@ -177,7 +177,7 @@ plantslib:register_generate_plant({ -- near stone (mountains)
     temp_max = -0.5, -- 55 °C (too hot?)
     temp_min = 0.75, -- -12 °C
   },
-  "abstract_ferns.grow_fern"
+  abstract_ferns.grow_fern
 )
 end
 
@@ -214,7 +214,7 @@ plantslib:register_generate_plant({ -- near ores (potential mining sites)
     temp_max = -0.5, -- 55 °C (too hot?)
     temp_min = 0.75, -- -12 °C
   },
-  "abstract_ferns.grow_fern"
+  abstract_ferns.grow_fern
 )
 end
 
@@ -244,6 +244,6 @@ plantslib:register_generate_plant({
     temp_max = -0.5, -- 55 °C (too hot?)
     temp_min = 0.75, -- -12 °C
   },
-  "abstract_ferns.grow_fern"
+  abstract_ferns.grow_fern
 )
 end
diff --git a/ferns/gianttreefern.lua b/ferns/gianttreefern.lua
index 89caeff..6897bcd 100644
--- a/ferns/gianttreefern.lua
+++ b/ferns/gianttreefern.lua
@@ -334,7 +334,7 @@ plantslib:register_generate_plant({
     --temp_max = -1,-- -1.2,-- -0.5, -- ~ 55C
     --temp_min = -0.35,-- -0.07, -- ~ 25C
   },
-  "abstract_ferns.grow_giant_tree_fern"
+  abstract_ferns.grow_giant_tree_fern
 )
 end
 
@@ -361,6 +361,6 @@ plantslib:register_generate_plant({
     temp_max = -1.0,
     temp_min = 1.0,
   },
-  "abstract_ferns.grow_giant_tree_fern"
+  abstract_ferns.grow_giant_tree_fern
 )
 end
diff --git a/ferns/horsetail.lua b/ferns/horsetail.lua
index 803bc1f..06608f8 100644
--- a/ferns/horsetail.lua
+++ b/ferns/horsetail.lua
@@ -151,7 +151,7 @@ plantslib:register_generate_plant({
     temp_max = -0.5, -- 55 °C
     temp_min = 0.53, -- 0 °C, dies back in winter
   },
-  "abstract_ferns.grow_horsetail"
+  abstract_ferns.grow_horsetail
 )
 end
 
@@ -173,6 +173,6 @@ plantslib:register_generate_plant({
     temp_max = -0.5, -- 55 °C
     temp_min = 0.53, -- 0 °C, dies back in winter
   },
-  "abstract_ferns.grow_horsetail"
+  abstract_ferns.grow_horsetail
 )
 end
diff --git a/ferns/treefern.lua b/ferns/treefern.lua
index f90d052..bcd11fe 100644
--- a/ferns/treefern.lua
+++ b/ferns/treefern.lua
@@ -213,7 +213,7 @@ plantslib:register_generate_plant({
     temp_max = -0.5,
     temp_min = 0.13,
   },
-  "abstract_ferns.grow_tree_fern"
+  abstract_ferns.grow_tree_fern
 )
 end
 
@@ -240,6 +240,6 @@ plantslib:register_generate_plant({
     temp_max = -1.0,
     temp_min = 1.0,
   },
-  "abstract_ferns.grow_tree_fern"
+  abstract_ferns.grow_tree_fern
 )
 end
diff --git a/flowers_plus/init.lua b/flowers_plus/init.lua
index d61daf3..a47e607 100644
--- a/flowers_plus/init.lua
+++ b/flowers_plus/init.lua
@@ -326,7 +326,7 @@ plantslib:register_generate_plant({
 	temp_max = -0.22,
     temp_min = 0.22,
   },
-  "flowers_plus.grow_waterlily"
+  flowers_plus.grow_waterlily
 )
 
 flowers_plus.grow_seaweed = function(pos)
@@ -346,7 +346,7 @@ plantslib:register_generate_plant({
 	near_nodes_count = 1,
     plantlife_limit = -0.9,
   },
-  "flowers_plus.grow_seaweed"
+  flowers_plus.grow_seaweed
 )
 
 -- seaweed at beaches
@@ -365,7 +365,7 @@ plantslib:register_generate_plant({
 	temp_max = -0.64, -- MM: more or less random values, just to make sure it's not everywhere
     temp_min = -0.22, -- MM: more or less random values, just to make sure it's not everywhere
   },
-  "flowers_plus.grow_seaweed"
+  flowers_plus.grow_seaweed
 )
 plantslib:register_generate_plant({
     surface = {"default:sand"},
@@ -381,7 +381,7 @@ plantslib:register_generate_plant({
 	temp_max = -0.64, -- MM: more or less random values, just to make sure it's not everywhere
     temp_min = -0.22, -- MM: more or less random values, just to make sure it's not everywhere
   },
-  "flowers_plus.grow_seaweed"
+  flowers_plus.grow_seaweed
 )
 -- spawn ABM registrations
 
diff --git a/molehills/init.lua b/molehills/init.lua
index c80e7cc..d901839 100644
--- a/molehills/init.lua
+++ b/molehills/init.lua
@@ -102,9 +102,9 @@ plantslib:register_generate_plant({
 	avoid_radius = 4,
     plantlife_limit = -0.3,
   },
-  "abstract_molehills.place_molehill"
+  abstract_molehills.place_molehill
 )
 
 -----------------------------------------------------------------------------------------------
 print("[Mod] "..title.." ["..version.."] ["..mname.."] Loaded...")
------------------------------------------------------------------------------------------------
\ No newline at end of file
+-----------------------------------------------------------------------------------------------
diff --git a/plants_lib/init.lua b/plants_lib/init.lua
index 4f71ddc..3db9951 100644
--- a/plants_lib/init.lua
+++ b/plants_lib/init.lua
@@ -122,6 +122,11 @@ function plantslib:register_generate_plant(biomedef, node_or_function_or_model)
 		return
 	end
 
+	if type(node_or_function_or_model) == "string"
+	  and not string.find(node_or_function_or_model, ":") then
+		print("[Plants Lib] Warning: registered function call using deprecated string method: "..dump(node_or_function_or_model))
+	end
+
 	if biomedef.check_air == false then 
 		print("[Plants Lib] Called legacy mapgen code for "..dump(node_or_function_or_model))
 		minetest.register_on_generated(plantslib:generate_block_legacy(minp, maxp, biomedef, node_or_function_or_model))
@@ -249,7 +254,7 @@ function plantslib:generate_block(minp, maxp, blockseed)
 								spawned = true
 							elseif objtype == "function" then
 								node_or_function_or_model(pos)
-								spawned = trueload
+								spawned = true
 							elseif objtype == "string" and pcall(loadstring(("return %s(...)"):
 								format(node_or_function_or_model)),pos) then
 								spawned = true
diff --git a/trunks/generating.lua b/trunks/generating.lua
index 3078d31..e46a804 100644
--- a/trunks/generating.lua
+++ b/trunks/generating.lua
@@ -174,7 +174,7 @@ plantslib:register_generate_plant({
 	near_nodes_count = 1,
     plantlife_limit = -0.9,
   },
-  "abstract_trunks.place_twig"
+  abstract_trunks.place_twig
 )
 end
 
@@ -191,7 +191,7 @@ plantslib:register_generate_plant({
 	near_nodes_count = 1,
     plantlife_limit = -0.9,
   },
-  "abstract_trunks.place_twig"
+  abstract_trunks.place_twig
 )
 end
 
@@ -355,7 +355,7 @@ plantslib:register_generate_plant({
 	near_nodes_count = 1,
     plantlife_limit = -0.9,
   },
-  "abstract_trunks.place_trunk"
+  abstract_trunks.place_trunk
 )
 
 -----------------------------------------------------------------------------------------------
@@ -391,7 +391,7 @@ plantslib:register_generate_plant({
 	near_nodes_count = 1,
     plantlife_limit = -0.9,
   },
-  "abstract_trunks.grow_moss_on_ground"
+  abstract_trunks.grow_moss_on_ground
 )
 end
 
diff --git a/youngtrees/init.lua b/youngtrees/init.lua
index d443571..8e9eff0 100644
--- a/youngtrees/init.lua
+++ b/youngtrees/init.lua
@@ -150,5 +150,5 @@ plantslib:register_generate_plant({
     min_elevation = 1, -- above sea level
 	plantlife_limit = -0.9,
   },
-  "abstract_youngtrees.grow_youngtree"
+  abstract_youngtrees.grow_youngtree
 )