RUTACEL& 



mm. in diametro 1 mm. crasso. Fructus depresso-globosus basi interdum conico- 

 gibbosus 7 cm. longus 8 cm. latus, pericarpio valde rugoso valdc laxo hand stricto; 

 medulla cava. 



HAB. Shinpo cult. 



XOM. JAP. Ponkan 



F ig. 15; Oitrus Ms LOUR. var. poo^is HAYA-EA ; 

 a form without a navel at the base ' (top in the figure) ' 



The variety resembles 

 Citrus Tankan in flowers 

 and leaves ; but the flowers 

 are smaller, petals narrow- 

 er, leaves obtuser in the 

 present variety, than those 

 in the latter. There is 

 no distinct articulation 

 between the ovary and 

 style in the former, while 

 such is very distinct in the latter. Leaves of the variety are quite smooth 

 on the Tipper surface, but those of C. Tankan have very minute elevated 

 dispersed dots. The flowers of the var. poonensis resemble those of another 

 variety Ponki ; but the calyx-lobes of the former are obtuser than those of the 

 latter. There are some points which may suggest the present orange to be a 

 hybrid between C. nobilis and C. grandis. They are the anthers and ovary 

 which resemble much those of C. grandis. But, this is, I think, a mere acci- 

 dental feature, all other characters of the present orange are essentially of those 

 of C. nobilis. In one form, the colour of the skin is like that of No. 151 

 No. 126, and that of the pulp is No. 131 : while in another, the colour of 

 the skin and pulp is like that of No. 126 in KLIN, et VAL. Code des Coul. 

 This tree, when quite old, attains a height of 5 in. 14 cm., the branches spread- 

 ing over 4-J m. in width. 



Citrus nobilis Louu. var. Genshokan HAY ATA n. v. C. nobilis var. 

 M!kan SIEB.? in Synopsis Plantarum Oeconomicarum Universi Rcgni Japonic! 

 p. 59, (nomen nudum). Frutex 3 ni. 82 cm. altus, 3 m. 85 cm. latus, ramis 

 ascendentibus smicililms. Folia lanceolata vel ovato-lanceolata vel oblonga 



