An introduction to edible Armillaria novae-zelandiae from Indonesia

Abstract

The majority study of Armillaria globally had been focused on A. mellea. The Indonesian data of genus Armillaria remains poor. During our fungus foray in West Java (Indonesia), some basidiomata of supa jambu (local name) consumed by the local people were collected. In the field, the specimens were morphologically identified as Armillaria. The present study was to confirm the species identity of our specimens based on morphological and molecular evidence. The fresh basidiomata were used for the examination. The combination of morphological and molecular analyses confirmed our specimen as Armillaria novae-zelandiae. Armillaria novae-zelandiae FIPIA-DEP50 was identified by its viscid, thin, striate, honey-yellow pileus, semi-bulbous to bulbous stipe which darken to black with age towards the base. Spore moderately thick walled, ellipsoid, to elongate-ellipsoid, smooth with some internal structure. Armillaria novae-zelandiae FIPIA-DEP50 is generally smaller in stature than the other closely related species (A. sparrei and A. hinnulea). The BLAST result revealed that our specimen exhibits 98% similarity to Armillaria novae-zelandiae as the top hit. The phylogenetic tree nested our specimens with A. novae-zelandiae clade (BS 100%) and A. mellea as its sister clade. The current study provides the first edibility information and herbarium collection of A. novae-zelandiae for Indonesia.