1. Twelve typical varieties of carrots were sown in fall, and their ramifications were investigated in each flowering time with a view of application to the seed producing technique according to their characteristics.2. The forms of the branching were different with the varieties. On one hand, the Oriental varieties in general showed an erect form ; the main stems grew long and thick, and their flower balls were large in contrast with the slender, short and scanty lateral stems, and on the other hand, all the European varieties, regardless of the shapes of their roots or bolting behaviour, showed a spreading form on the whole, and also many lateral stems which were developed so well and large as the main stems, bore large flower balls no less than those of the latter.3. It seems to the writer that the slow bolting European carrots showed the spreading form and the early bolting Oriental carrots showed the erect form as stated above, must be due to the fact that the lateral buds of the former tend to sprout easily, whereas on the latter they are rather inactive of their budding.4. In order to produce the seeds of superior quality and to make harvesting and selection of them more efficiently, it is necessary to plant the seeds with a uniform flowering time which will bear flower balls of uniform size and shape.From this point of view, it is advisable that the Oriental varieties should be planted closely, their lateral stems be pruned, and the seeds be gathered from the main flower balls, while the European varieties should be planted apart, their main stems be pruned and the seed be gathered from the lateral stems.5. It is generally considerd that the seeds of “Kintoki” carrot, a Oriental variety, has poor germination, but the author presumes this has been mainly caused by gathering the seeds from not only main balls but also the under-grown flower balls of th“”e lateral stems on non-pruned plants.