28 



KUTACEJE. 



longo 2 ram. crasso basi plus minus dilatato cum ovariis articulate, stigmate 

 pulviniformi 4 mm. lato 2 mm. longo. Fructus depresso-globosus 5| cm. longus 

 6-7 cm. latus ; medulla solida ; carnibus acidis. Scniina cuneato-ovata plus 

 minus coniplanata 1 cm. longa. 



HAB. Shintikujmlt. 



NOM. JAP. Hijonkan ^jftfjt. 



NOTE : Colour of the skin is like that of No. 1.31 or No. 156 in KLIX. 

 et VAL. Code des Conl. 



Pig. 18; Various species of Citrus. 1, a fruit of Citrus Daidai HAYATA 2, calyx and 

 ovary in section of the same species ; 3, accrescent calyx of the same ; 4, petal of the same ; 

 5, a petal of Citrus sinensis form. ScJJxin ; G, a petal of Citrus Tankan HAYATA. 



Differs from C. Aurantium by the fruits with a solid core. It may be hy- 

 brid between C. Aurantium and C. sinensis. Flowers in the middle of Feb- 

 ruary. The present species is very near with a Japanese one, called Daidai ^ or 

 Kwaiseikan ^-pf/fll", and we think the Formosan one is identical with the latter. 

 The petals of the present Citrus arc much narrower than those of any of the 

 Formosan oranges. It is nearly similar to the following species, Natsudaidai ; 

 the fruits come quite close to those of C. sinensis forma Rekkan. 



