18 



HUTACEJi. 



3 cm. longa 14 mm. lata apice obsusa basi hand vel leviter contracta valde 

 reflexa. Stamina circ. 40, antheris linearibus 6 mm. longis 1J mm. latis apice 

 apiculatis basi 2-lobatis. Discus annuliformis. Ovarium obovoideo-cylindricmn 

 7 mm. longimi C mm. latum sursum hirsutum, stylo columnari 12 mm. longo 



3 mm. crasso, stigrnate pulviniformi 3 

 mm. alto 7-8 mm. in. diametro sub- 

 peltato. Fructus pyriformis 12 cm. 

 longus 11 cm. latus circ. 10-locularis, 

 pericarpio crasso flavescenti ; carnibus 

 fere albicantibus. 



HAB. Shintiku, Shirin, leg. B. HA- 

 YATA. 



NOM. JAP. Suntan, jJtH.. 

 NOTE : Flowers towards the end of 

 March. 



The present species is principally 

 distinguishable from the following 

 one, Zabon, in the shape of the fruits, as can be seen in the accompanying 

 figures. Leaves >f the former are more densely arranged and their surfaces 

 are less undulate ; but those of the latter are less densely arranged and their 

 surfaces are much more undulate. Wings of the petioles in Zabon are smaller 

 than those of Buntan. But these differences just given can never be regarded 

 as constant ; there are very many exceptions. 



Citrus Sabon SIEB. Synopsis Plantarum Oeconomicarum Universi Eegni 

 Japonici, in Verh. Batav. Gen. XII. (1830) p. 59, (nomen nudum). Frutex 

 vel arborescens 7 m. altus latior quani lougior, rami validissimi divaricati vcl 

 ]>lus minus iiiclinati. Fructus depresso-globosus 18 cm. longus totiusque latus 

 apice plus minus conicus basi depressus, pericarpio flavescenti, carnibus purpura- 

 scentibus, 10-1 5-locularis. 



Citrus decumana LOUR. ; HAYATA Gen. Ind. }>. 11. 



HAB. Shinkiku, Shirin, ubique cult. 



NOM. JAP. Zabon, ^^ ; Yfi, %&. 



There arc several forms of this Citrus. They are as follows. 



Citrus grandis OSRECK form. Buntan. x -J. 

 This specimen is taken from a young tree ; 

 a specimen from an older one lias a much 

 thinner peel. 



