| Section | Patellares (Boissier) Nakai, Rheophyte | |
|---|---|---|
| Scientific Name | Type species | Viola amamiana Hatusima> : [Amami Sumire] Published in: Sci. Rep. Yokosuka City Mus., no. 15:13. (1969) |
| Variety | ||
| Form | ||
| Synonym | ||
| Origin | amamiana : derived from the name of Amami Oshima Island | |
| Common names | ||
| Stalk Form | The individual leaves and flowering stalks emerge directly from the rootstock. | |
| Habitat | On rocks along and in streams. | |
| Distribution | Japan domestic | It is endemically distributed in Okinawa (Main Island North) and Kagoshima (Amami Oshima), southern end of Japan. |
| Japan overseas | ||
| Others | ||
| Flower | Shape | Very small (10-12mm). |
| Color | White, slightly yellowish in central part 8mm across, purple-striate on low petal. Side petals are hairless. | |
| Spur | Small and round. | |
| Season | Late (from the end of April to May). | |
| Stigma | Inverted triangle. | |
| Aromatic | ||
| Others | Hair grows on flower stems and sepals. The appendix of the calyx has a unique shape. | |
| Leaf | Shape | Blade ovate, 5 - 10mm long, 3 - 6mm wide. |
| Color | Both surfaces are light green, with hairs near margins. | |
| Others | Evergreen leaf. Some have white fine hair on the edges. | |
| Seed | Shape | Obovate. Medium size grain. |
| Color | Light brown. It is shiny. | |
| Others | It is explained that the germination rate is high. | |
| Characteristics of roots | ||
| Endangered Information | Ministry of the Environment [Critically Endangered IA (CR)], Kagoshima：ThreatenedⅠ This is the interpretation of the species as published in The IUCN Red List of Threatened Species. |
|
| Type Specimen |
Amani Oshima (Kagoshima) by Sumihiko Hatsushima (1969).
Amani Oshima (Kagoshima) by S.Sako (1964) on the mossy and rocky bank of the upper stream of the Sumiyo River.
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| Chromosomal number | 2n=22 (Shiuchi, T., 2000, Bulletin of the Botanic Gardens of Toyama) | |
| Reference Information |
A New Violet from Ryukyus Sumihiko Hatusima（Kagoshima Univ.）
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| Others | Endemic to Japan. | |
\63円（Issued by Japan Post Kyusyu 2021/2/1）
\84円（Issued by Japan Post 2022/8/10) |
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