6 ABT. 3. — SEIICHI KAWBMUBA : 



ground. As the beech is not much used as timber in this country, 

 the fuel collectors cut off the branches for their use but leave the 

 trunks to decay as they stand, thus preparing an abundance of 

 substratum winch eventually may give growth to the fungus. 



Usually the fungus is found growing numbers together in 

 close clusters and situated one above another in an imbricate-like 

 manner. This is well seen in the figure shown on PL II. 



IV. Luminous parts of the fungus. 



The following informations may be of use to mycologists in- 

 terested in the luminosity of fungi. Alpine 15 in his observations 

 on Pleurotus candescens Müll, et Berk, of Australia reported that 

 it kept its luminosity for a week at least after it began to be 

 luminous. The gills were capable of emitting light during all that 

 length of time, while the mycelium was found to be luminous 

 only for the first two days. Tulasne 2) stated that Pleurotus oleareus 

 D.C. is luminous not only in the hymenia, but occasionally also in 

 the whole fruit-body. Experiment was made also on the same 

 species by Aecangeli 3) , who likewise came to the conclusion that 

 the luminosity was always located in the gills, but, without being 

 restricted to these, may extend to other parts, as f. i. the surface 

 of stem and the inner structures of pilei. Bkefeld 45 reported that 

 the mycelia of the fuagus Armillarla mellea Vahl. showed luminos- 

 ity in the culture medium. Molish 5) observed the same fungus 

 in pure culture form some luminous rhizomorphs in the medium, 

 jIeyex^ observed in a forest that light was emitted at night by a 



1) Alpine, D. Mc , Phosphoreszierende Pilze in Australien, (Proceeding of the Linnean 

 Society of New-South Wales, XXV. 1900, p. 548-562.)— 2) Tulasne, L. E., Sur la phosphorescence 

 spontanée de l'Agaricua olearius D.O., du Bhizomorpha suhterranea Pers. et les feuilles mortes du 

 chêne, (Annal, d. Se. nat. 3, sér. Botanique, IX, T. Paris, 1848. p. 338.).- 3) Arcangeli, G., Ei- 

 cerche sulla fosforescenza del Pleurotus oleareus D.C., (Eeale Accadémia dei Lincei, Anno CCL- 

 XXXVI, 1889.)— 4) Brefeld, O., Botanische Untersuchungen über Schimmelpilze, Heft. m. 

 Basidioiayceten, I. p. 136.— 5) Molish, H., Leuchtenden Pflanzen, 1904, p. 36.-6) Meyen, F.J.F., 

 Neues System der Pflanzenpliysiologie, Bd. n, 1838, p. 195. 



