Mitotic and meiotic chromosomes were examined in a total of 162 plants representing 16 taxa in the Japanese Diplazium, including polymorphic terrestrial species with evergreen bi-to tripinnate leaves. Diplazium hachibnse, D. virescens var. virescens, var. conterminum, var. okinawaense, and two other unnamed varieties, D. kawakamii var. kawakamiii, D. dilatatum var. heterolepia, D. taiwanense, D. x kawabatae (= D. dilatatum x taiwanense), D. X takii (= D. hachipense x virescens var. virescens), and D. x nakamurae (= D. hachibnse X virescens var. conterminum) are apomictic triploids (2n=n=123). Diplazium ammianum and D. esculentum are sexual diploids (2n= 82, n=41) and D. subtripinnaturn is a sexual tetraploid (2n= 164, n= 82). Diprazium dilatatum var. dilatatum includes both sexual diploid and apomictic triploid populations.Cultivated gametophytes of six triploid taxa produced sporophytes apogamously, confirming their apomictic reproduction. All three putative hybrids, D. xkawabatae, D. X takii, and D. X nakamurae, are triploid, apomictic, and fertile taxa, therefore they are not the result of hybridization between known pairs of Japanese Diplazium plants.
This report concerned to the primary fracture healing after K-U Compression plate fixation. We have had 270 clinical cases of fracture and treated with K-U compression plate. X-ray examinations showed that the majority of the cases were healed without accom-
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