NEW JAPANESE FUNGI 



NOTES AND TRANSLATIONS— X 



Tyozaburo Tanak\ 



Hypodermopsis Theae K. Hara sp. nov. in Chagyokai (Tea 

 Journal) 14 7 : 13-14. T. 8, vii, July, 1919. (Japanese.) 

 Caulicolous, spots orbicular or irregular, large, light reddish- 

 brown; perithecia superficial, scattered or gregarious, flat, orbicu- 

 lar, elliptical or oblong, simply elongated or slightly curved, black 

 or lacquer-black, later lacerate from the middle giving a somewhat 

 hoary appearance, usually veiled with epidermal tissue of the host, 

 400-700 fi broad, 130-150 fi high, length irregular, wall black, 

 parenchymatous, 40-50 ^ thick ; asci clavate, oblong-ovoid or short- 

 cylindrical, rounded at the apex, pedicellate at the base, 50-66 x 

 20-23 fi, paraphysate, octosporous ; paraphyses filiform, not forked, 

 equal to or slightly longer than the asci, 1— 1.5 p across; ascospores 

 oblong-ovoid, oblong or pyriform, both ends rounded, multi- 

 nucleate, 4-6-septate, hyaline, 18-23 x 6-7.5 



Parasitic on the trunks and branches of Thea sinensis. 



Type localities: Shidzuoka-ken- Hamana-gun Hikuma-mura, 

 Nov. 12, 1918 (K. Hara) ; Shidzuoka-ken Abe-gun Chiyoda-mura, 

 Dec. 6, 1918. (K. Hara.) 



Spots occur on the woody part of the tea-plant as light reddish- 

 brown, round or irregular patches at least 5 cm. in diameter. Such 

 spots increase their size in various directions, often running to- 

 gether in large irregular patches entirely surrounding the branches. 

 Black perithecial bodies appear on the diseased spots as scattered 

 or crowded minute dots of 0.5 mm. to 1.0 mm. across. The in- 

 fected branches die out in a short time. 



The Japanese name of the disease : Chaju no Kasshoku Azabyo. 

 (Brown spot of the tea-plant.) 



Illustrations : One half-tone plate showing the diseased spot, 

 cross-section of a perithecium, asci (with a paraphysis) and asco- 

 spores. (Figs. 1, 5, 6 and 8.) 



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