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Arisaema jacquemontii - Blume.
                 
Common Name
Family Araceae
USDA hardiness 5-9
Known Hazards The plant contains calcium oxylate crystals. These cause an extremely unpleasant sensation similar to needles being stuck into the mouth and tongue if they are eaten but they are easily neutralized by thoroughly drying or cooking the plant or by steeping it in water.
Habitats Shrubberies and rocky slopes in upper forest and lower alpine zones in the drier areas of the Himalayas, 2400 - 4000 metres[51].
Range E. Asia - Himalayas - Afghanistan to S.E. Tibet.
Edibility Rating  
Other Uses  
Weed Potential No
Medicinal Rating  
Care
Fully Hardy Moist Soil Full shade Semi-shade Full sun

Summary

Arisaema jacquemontii


(c) 2010 Ken Fern & Plants For A Future
Arisaema jacquemontii
Copyright 1988-2010 Thomas Kornack
   
Physical Characteristics
 icon of manicon of flower
Arisaema jacquemontii is a PERENNIAL growing to 0.6 m (2ft) by 0.3 m (1ft in).
It is hardy to zone (UK) 6. It is in flower from Jun to July. The flowers are dioecious (individual flowers are either male or female, but only one sex is to be found on any one plant so both male and female plants must be grown if seed is required) and are pollinated by Flies.The plant is not self-fertile.
Suitable for: light (sandy) and medium (loamy) soils and prefers well-drained soil. Suitable pH: acid, neutral and basic (alkaline) soils. It can grow in full shade (deep woodland) semi-shade (light woodland) or no shade. It prefers moist soil.

Synonyms
A. cornutum. A. exile.

Habitats
Woodland Garden Dappled Shade; Shady Edge; not Deep Shade;
Edible Uses
Edible Parts: Leaves;  Root.
Edible Uses:

Root - cooked[177]. Used in the same ways as potatoes[272]. The tubers are 12 - 30mm in diameter[266]. The root must be thoroughly cooked or dried before use, see the notes above on toxicity. Leaves - dried[177]. The leaves are fermented before being eaten in Nepal[272]. Some caution is advised, see the notes above on toxicity.
Medicinal Uses
Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.



None known
Other Uses
None known
Cultivation details
Prefers a cool moist peaty soil in the bog, woodland garden or a sheltered border in semi-shade[134, 200]. Prefers a loamy or peaty soil[1] and will tolerate a sunny position if the soil is moist but not water-logged and the position is not too exposed[1, 200]. This is probably the hardiest of the Himalayan species and should succeed outdoors in a suitable position in many parts of the country[90]. Only plant out full sized tubers and mulch them with organic matter in the winter[200]. Plants need protection from slugs[200]. Closely related to A. wardii. Most species in this genus are dioecious, but they are sometimes monoecious and can also change sex from year to year.
Propagation
Seed - best sown as soon as it is ripe in a shady position in a cold frame[134]. Stored seed remains viable for at least a year and can be sown in spring in the greenhouse but it will probably require a period of cold stratification. Germination usually takes place in 1 - 6 months at 15°c[134]. When large enough to handle, prick the seedlings out into individual pots and grow them on in light shade in the greenhouse for at least a coupe of years until the corms are more than 20mm in diameter. Plant out into their permanent positions whilst they are dormant. Division of tubers when the plant dies down in late summer.
Other Names
Found In
Weed Potential

Right plant wrong place. We are currently updating this section. Please note that a plant may be invasive in one area but may not in your area so it’s worth checking.

Conservation Status
IUCN Red List of Threatened Plants Status :
Related Plants
Latin NameCommon NameEdibility RatingMedicinal Rating
Arisaema amurenseTian Nan Xing23
Arisaema consanguineumTian Nan Xing13
Arisaema costatum 20
Arisaema dracontiumGreen-Dragon11
Arisaema flavum 21
Arisaema negishii 20
Arisaema peninsulare 10
Arisaema quinatumIndian Turnip, Jack in the pulpit10
Arisaema ringens 01
Arisaema serratum 21
Arisaema thunbergii 01
Arisaema tortuosumArisaema22
Arisaema triphyllumJack In The Pulpit, Dragonroot, Indian Turnip32
Arisaema utile 20
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Author
Blume.
Botanical References
51200266
Links / References
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Subject : Arisaema jacquemontii  

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