147 



flask was too full of material to allow of further toad- 

 stools maturing, there were several young fruit bodies 

 showing (Fig. 1). 



Through the courtesy of Prof. Dr. Johanna Wester- 

 dijk, then Lady Principal of the Willie Commelin Scholten 

 Laboratory at Amsterdam, I learnt the name of the 

 fungus. Mr. A. van Luyk, assistent of the above men- 

 tioned laboratory, was good enough to compare the 

 fungus with Armillaria mellea found at Santpoort, near 

 Haarlem, and he detected slight variations which are 

 probably due to the abnormal growth in the Erlenmeyer 

 flask. Of the cultivated fungus I can give the following 

 diagnosis : 



„Toadstools originating in clusters of two or more 

 units; pileus 5 — 6 cm. in diameter, honey-coloured, 

 varying from yellowish brown to brown, peculiarly 

 marked with small tufts of yellowish or brownish hairs, 

 which disappear in the mature growths; stem: 5 — 6 

 cm., diam 5 — 6 m. m., brownish colour; annulus: lacking 

 in the mature spécimens, but présent in the young 

 growths; gills; whitish, touching the stem and somewhat 

 decurrent; spores: ovoid-elleptic or elliptic and slightly 

 pointed; 7. — 9 X 5 — 6 « white and smooth; basidia 

 27 — 38 X 7 — 9 U-; cystidia at the margin of the gills: 

 45 — 50 X 10 — 12 [J-; rhizomorphs resembling those of 

 Armillaria mellea présent in the culture and in free 

 nature." 



According to Mr. van Luyk the fungus is Armillaria 

 mellea (Vahl) Quel., the well known parasite of trees 

 in Europe. 



As far as I know only one description of the same 

 fungus found in Java is quoted in the littérature i. e. 

 Armillaria mellea (Vahl) Quel. var. javanica. P. Henn. 

 found by N. Fleichner at Tjibodas at a height of 



