Preservation of weed seeds, construction of a data base of them with pictures.

我们经常到田野里去采集植物的种子。此外，我们还请了很多人寄种子标本给我们。结果得到216科4385种样品种子22133粒。共保存185科2435种8636份种子样本，其中大部分种子处于活态。用显微镜对101科972种植物进行了摄影。本报告打印了330种杂草的种子图片。我们选择了笠原康夫博士的《日本杂草画报》一书中出现的品种。那本书的标本保存在我们的植物标本室里。采集了79科231种、692种濒危植物种子标本，并对种子进行了保存。

We often went out for fields to collect seeds of plants. In addition, we had asked many people to send specimens of seed to us. As the results, we could get 22,133 sample seeds which belong to 4,385 species of 216 families. The 8,636 samples of seeds which belong to 2,435 species of 185 families are preserved in a refrigerator and most of them are preserved in a live state.The pictures of 972 species of 101 families were taken by the camera with a microscope. The pictures of seeds of 330 weed species were printed out on this report. We chose the species which are appeared in the book, "Weed of Japan Illustrated" by Dr.Yasuo Kasahara. The specimens of that book are kept in our herbarium.The 692 seed samples of endangered plant species which belong to 231 species of 79 families were collected and the seeds are preserved.