Louisiana irises (English spelling)

…There are about 40 wild species that belong to the bearded iris group, and in horticulture, those that are 40 cm or less tall are called dwarfs, and the Chinese tallow iris I. pumila L. is also included in this group. (3) Bearded iris group (those without hair-like projections on the outer tepals) (a) Louisiana irises There are five species, including I. fulva Ker-Gawl. (English name copper iris), which grows wild in the Mississippi River basin in the United States, as well as natural hybrids and numerous horticultural varieties. They come in a wide variety of colors, and their flowers resemble Japanese iris and Japanese iris. (b) Siberian iris: This type consists of the European species Iris sibirica L. and Iris sanguinea Donn., as well as hybrids of these two species. By the early 1900s, there were approximately 150 cultivars. Since then, the flower shape has been significantly improved, and in addition to bluish purple and white, previously unfamiliar cultivars in pink and yellow have also been developed. These species are widely planted in gardens in the UK and the US.

*Some of the terminology that mentions "Louisiana irises" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…ビアディッド･アイリス群に属する野生種は約40種あり，園芸上40cm以下をドワーフdwarfと呼び，ナンキンアヤメI.pumila L.もこの群に含まれる。(3)ビアドレス･アイリス群(外花被片にひげ状突起のないもの)　(a)ルイジアナ･アイリス類Louisiana irises　アメリカのミシシッピ川流域に自生するチャショウブI.fulva Ker‐Gawl.(英名copper iris)など5種とそれらの天然交雑種や多数の園芸品種があり，花色が豊富で，花はカキツバタやハナショウブに似る。(b)シベリアン･アイリス類Siberian iris　ヨーロッパ原産のコアヤメI.sibirica L.，アヤメI.sanguinea Donn.やこの2種の交雑種からなり，1900年代前期までに約150品種あり，以後，著しく花形が改良され，花色も青紫色，白色などのほかに今までなかった桃色，黄色などの品種も育成され，英米で広く庭植えされている。…

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