Also I found many buds of Ooubayuri. Ooubayuri in kanji characters are 大姥(oouba)百合(yuri). 大姥 means "old woman" and 百合 is translated in English as lily. When they are in bloom, they lose leaves and a leaf in Japanese is a homonym of a tooth. The plants lose all their leaves(=teeth) when they are in bloom, hence they were named as mentioned.
Ooubayuri needs more than ten years to have flowers and after they bloom, they die out.
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but rugosas I found at Shikinomori Park near the Future University had a lot of petals. They seemed like roses.
Now you can find rugosas at various places, especially near coastal area. All smell sweet and my dog seems to like it, too.
You can enlarge all photos by clicking them;D
At the Shikinomori park, golden-chains are also in bloom. I saw them for the first time.
Blue flowers are Ezo-engosaku and yellows are Kibanano-amana. Both are edible. I don't know the name of White flowers.