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[[File:Arnica chamissonis0Doronicum orientale 2017-05-01 9220.jpg|thumb|right|''Arnica montana Doronicum orientale'']] '''ArnicaDoronicum orientale''' is plants are native to Asian and European mountain areas, where they have been traditionally used medicinally. They have only been developed as ornamental plants in the last century, but its species have found a genus of perennial plant place in the sunflower family Asteraceae. The genus name Arnica may be derived from heart of the Greek arni, '''lamb''', Finnish garden and flower bed in reference to the plants' soft, hairy leavesa relatively short space of time.  

The main constituents of Arnica montana are essential oils, fatty acids, thymol, pseudoguaianolide sesquiterpene lactones and flavanone glycosides. Pseudoguaianolide sesquiterpenes constitute 0.2-0.8 % of the flower head of Arnica montana. They are the toxin helenalin and their fatty esters.[12] 2,5-Dimethoxy-p-cymene and thymol methyl ether are the primary components of essential oils from both the plant's roots and rhizomes<ref name="chemical composition"/>

{{Leaf|Alternate|longLong-stalked|Leaves: Alternate, basal leaves long-stalked, stem leaves 3–4, short-stalked–stalkless. Blade ovate, cordate based, basal indentation shallow, margin irregularly toothed}}.<ref name="Leaf"/>

{{Flower|Unisexual| 3–9 cm |yellowYellow|Stamens 5|Flowers form 3–9 cm (1.2–3.6 in.) wide, single flower-like capitula surrounded by involucral bracts.Capitula solitary, terminating the stem}}

The more common species of Aconitum are generally those cultivated in gardens, especially hybrids. They typically thrive in well-drained evenly moist garden soils like the related hellebores and delphiniums, and can grow in the shade of trees.<ref name="How to plant/cultivate"/>

{{Commonly seen|Tropical Temperate area}}.

Image:Arnica longifolia0.jpg|FlowersFile:Arnica montana 180605Doronicum orientale20100414 36.jpg|SeedsImage:Arnica chamissonis0Doronicum orientalis 'Little Leo'.jpgJPG|FlowerImage:Arnica griscomii2007-03-28Doronicum orientale05.jpg|BudsImageFile:ArnicamontanaDoronicum orientale1.jpg|HabitusImage:Arnica longifolia02007-03-28Doronicum orientale01.jpg|Field

<ref name="chemical composition">[https://en.wikipedia.org/wiki/Arnica_montana "Chemical constituents"]</ref><ref name="Leaf">[http://www.luontoportti.com/suomi/en/kukkakasvit/leopards-bane "Plant morpholoy"]</ref><ref name="How to plant/cultivate">[https://en.wikipedia.org/wiki/Aconitum "Cultivation"details]</ref>