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Clicking any heading in the main data area (at right) will scroll the page back to this top position. Use the following links to jump to the associated section in the main data. Common Names Countries of Distribution Cutting Resistance Family Name Grain Heartwood Color Light-Induced Color Change Luster Natural Durability Numerical Data References Regions of Distribution Response to Hand Tools Sapwood Color Scientific Name Synonyms Texture Trade Name Tree Identification Scientific Name Castilla fallax Trade Name Cauchillo Family Name Moraceae Synonyms Castilloa tuna Common Names Cauchillo, Caucho macho, Hule, Hule macho, Male rubber tree, Rubber tree, Tunu, Ule, Ule macho, Ule-ule Regions of Distribution Central America Countries of Distribution  [VIEW MAP] Belize, Panama Heartwood Color Yellow Red Green/grey Brown Orange White to cream Pale brown Sapwood Color White Yellow White to yellow Same as heartwood Grain Straight Even Figure Weak (figure) Texture Medium Coarse Luster Medium Lustrous Natural Durability Very durable Perishable Non durable Light-Induced Color Change Darker Tree Identification Bole/stem form is straight Bole/stem form is buttressed Cutting Resistance Cutting Resistance with dry wood is easy Response to Hand Tools Easy to Work Numerical Data Item Green Dry English References Oxford School of Forestry