which plant produces [authentic] dragons blood resin and what is the toxicity [if any] when the resin is eaten

Question

...as to eating it, i'm only talking tiny crumbs of the stuff.

Answer 1

Rare and Endangered Plant
Dracaena draco also known as the dragon tree
European legends as “the blood of dragons”, and was often used for its supposed magical and medicinal qualities. This resin is still used today to produce incense and varnishes used to stain and polish wood.
http://www.usbg.gov/plant-collections/conservation/Dracaena-draco.cfm
It must have some toxicity since you can use it to make stain and polish wood but I've nerver found a link that
has actually said it is toxic.
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This is the authentic dragon with the dragons blood.
http://www.draconian.com/dragons/komodo-dragon-background.php

This is plant named dragons blood
SEDUM spurium Dragons Blood : STONECROP
http://www.bluestoneperennials.com/b/bp/SEDBS.html

Answer 2

*Dracaena* is the main family from which Dragon's blood comes, although there are three other plant families often used. It is not toxic and has no intoxicating effects, however Dragon's Blood from the Daemonorops family is an anti-coagulant whereas from the other families it is usually a coagulant.