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(First upload on August 10 2017. Last on September 11 2023) [ 日本語 | English ]

Isotoma Lindl. (ホシアザミ*) I. axillaris Lindl. Hoshi-azami (ホシアザミ*, 星薊), rock isotome or showy isotome *: confusing (e.g., Hippobroma longiflora (L.) G. Don (syn. Laurentia longiflora (L.) Peterm.) also called as Hoshi-azami Lifeform: short-lived perennial forb, treated as annual for gardening Distribution: Australia (Queensland, New South Wales and Victoria)

Habitat: damp crevices on rocky cliffs, especially granite and sandstone, or shallow sandy soils Use: gardening → cultivars, e.g., Alba, Blue Star, White, Avant-Garde Blue, Pink Star, Stargazer Mixed Poison: severe irritation to skin and temporary blindness Synonyms: Laurentia axillaris (Lindl.) E. Wimmer, basionym

Isotoma axillaris in Hokkaido

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[1-4] at a small garden (like a pot) adjacent to a bulding in N10/W3, North Ward, Sapporo, on July 7 2017. [5/6] in front of Keio Plasa Sapporo Hotel near JR Sapporo Station on August 28 2023.

Isotoma petraea F. Muell. in central Australia

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Rock isotome Lifeform: perennial forb

Distribution: arid regions in central Australia Habitat: breakways among rocky outcrops and in rock crevices

Flower: white - bule-purple Use: gardening (cultivars, e.g., cv bullet blush)

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[1/2] at the bottom of Uluru (Ayers Rock), central Australia, on July 17 2004.