Size of big mandarin 8 cm and have 0-15 seeds, peel fragrance is weak, like kumquat leaves, but more citrus
Looks to me like you have 3 different citrus in your photo... one looks like a navel orange; the small ones look like Kishu; I can't tell on the larger mandarins, there are so many kinds. Here is a great resource that tells you a lot of details on hundreds of different kinds of mandarins: UCR: Citrus Variety Collection
