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(First upload on November 27 2007. Last on September 5 2017) [ 日本語 | English ]

Iris laevigata Fischer






Mount Usu / Sarobetsu post-mined peatland
From left: Crater basin in 1986 and 2006. Cottongrass / Daylily

Iridaceae

Perennials, phylogenetically close to Liliaceae
Rhizome (tuber or corm) present
Perianth: Inner perianth = 3 + outer perianth (fall) = 3 → calyx and petal are not distinguishable
1. homogenous tepal, small flower, filamentous style branch that is alternate with stamens ___ Belamcanda (ヒオウギ), Sisyrichium (ニワゼキショウ)
2. heterogenous tepal, large flower, flat style branch covering stamens ___ Iris (アヤメ)

Iris L. (アヤメ) in Japan


I. ensata Thunb. var. spontanea (Makino) Nakai (ノハナショウブ)
I. gracilipes A. Gray (ヒメシャガ) [not in Hokkaido]
I. japonica Thunb. (シャガ)
I. laevigata Fisch. (カキツバタ)
I. minutoaurea Makino (キンカキツバタ)
I. sanguinea Hornem. (アヤメ)
I. setosa Pall. ex Link (ヒオウギアヤメ)
I. pseudoacorus L. (キショウブ)
I. rossii Baker (エヒメアヤメ) [not in Hokkaido]
I. tectorum Maxim. (イチハツ) [ancient exotic]
Gardening
I. germanica L. (ドイツアヤメ)
I. lactea Pall. (ネジアヤメ)
索引
I. setosaI. laevigataI. ensata
Flowerviolet (rarely white)mainly blue-purplemainly red-purple, φ = 15 cm (largest)
Outer petal retiformnon-retiform, white mottlenon-retiform, yellowish center
inner petalinconspicuousinconspicuous
Stem height> 1 m50-60 cm
Leaf width *1 cm (< 2 cm)2 cm, wavy
Mdiveinunvisiblefinethick
Habitatrelatively drymesic, emersedmesic
Chromome number2n = 382n = 322n = 24
RemarksSarobetsu

*: at 20 cm above the ground surface before flowering

Iris laevigata in Asia


Kakitsubata (カキツバタ, 杜若), rabbitear Iris
Lifeform: perennial
Distribution: northeastern China - Korea - eastern Siberia - Japan

Red Data Book: VU

Habitat: wetlands (湿原)

Iris1 Iris2 Iris3
Iris4 Iris5 ST6
[1] in a post-mined peatland, Sarobetsu mire, northern Hokkaido, on June 20 2008. [2] in Jinchuan wetland, northeastern China, on June 11 2017. [3] at Abira wetland, central Hokkaido, on July 16 2012. Iris laevigata ceased the flowering while Iris ensata flowered. [4/5] in Shizukari wetland, southern Hokkaido, on June 15 2015. [6] near Akanuma Bog (Red Bog) in Kushiro Moor, eastern Hokkaido, on July 28 2015.. Discard: near Akanuma Bog (Red Bog) in Kushiro Moor, eastern Hokkaido, on July 8 1996.

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