▁Math es on ▁( 1 9 8 9 ) ▁Pul au ▁Pen y eng at ▁: ▁Nin ete enth ▁Century ▁Islam ic ▁Centre ▁of ▁R ia u , ▁online ▁edition ▁ ▁Barbara ▁Watson ▁And aya ▁( 1 9 7 7 ) ▁From ▁R ū m ▁to ▁Tokyo : ▁The ▁Search ▁for ▁Ant icol onial ▁Al lies ▁by ▁the ▁R ul ers ▁of ▁R ia u , ▁ 1 8 9 9 - 1 9 1 4 , ▁online ▁edition ▁ ▁Category : History ▁of ▁Joh or ▁Category : History ▁of ▁Sum atra ▁Category : I sl am ic ▁states ▁in ▁Indones ia ▁Category : Form er ▁s ultan ates ▁Category : Form er ▁countries ▁in ▁S out heast ▁Asia ▁Category : Form er ▁monarch ies ▁Category : Pre colon ial ▁states ▁of ▁Indones ia ▁Category : Form er ▁countries ▁in ▁Indones ian ▁history ▁Category : Form er ▁countries ▁in ▁Malays ian ▁history ▁Category : Is land ▁countries ▁Category : History ▁of ▁Singapore ▁Category : History ▁of ▁Malays ia ▁Category : History ▁of ▁Indones ia <0x0A> </s> ▁Russ ula ▁ris ig all ina ▁is ▁a ▁species ▁of ▁m ush room . ▁It ▁was ▁previously ▁known ▁as ▁R .   ch ama ele ont ina . ▁It ▁is ▁a ▁small ▁yellow ▁russ ula ▁that ▁is ▁ed ible ▁and ▁good - t ast ing , ▁although ▁ident ifying ▁the ▁species ▁correctly ▁can ▁be ▁difficult . ▁This ▁m ush room ▁can ▁be ▁found ▁in ▁various ▁countries ▁throughout ▁Europe . ▁ ▁See ▁also ▁List ▁of ▁Russ ula ▁species