The present writer made observations on the external characteristics and the meiotic divisions of one line ("Triticale 1055") of wheat-rye amphidiploids which was derived from crossing the Russian Triticale (Triticale C) with a Swedish wheat varieThe results obtained are ty (MtONTZING 1939). summarized as fllows : 1. The general external appearance of Triticale resembles much more to T. vulgare than to S. cereale as shown in Table 1. 2. The test of crbssability among T, vulgare, S. cereale and Triticale, as shown in Table 2, resulted in better seed setting in the case of Triticale was crossed by T. vulgare as the male parent as well by S. cereale than the even reciprocal cases. . In addition to this, through the seed-setting test, wheat-rye amphidiploid is shown to be self fertile as in T. vulgare whereas S, cereale is self-sterile (Table 3. ). 3. The results which were similar to the crossing test were obtained in pollen germinatio, n tests using the stigmata (Table 4). 4. According to the inoculation experiments of uredospores on leaves, as shown in Table 5, it can be considered that the fungus parasitic on wheat is also the same parasitic on Triticale. 5. The chromosome riumbers of the somatic cells in four Triticale individuals (C 3, C 7, D 24, D 30) were determined to be 56 as shown in Figs. l-4. Some irregular behaviors as shown in Table 6 and Figs. 5-13 were also found in the meiotic phase of pollen mother cells.