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Corydalis incisa - (Thunb.)Pers.

Common Name Incised fumewort
Family Papaveraceae
USDA hardiness 6-10
Known Hazards Although no specific mention has been seen for this species, there is a report that Corydalis species are potentially toxic in moderate doses[222].
Habitats Thickets and bamboo forests in lowland and foothills all over Japan[58]. Grows in marshes[178].
Range E. Asia - China, Japan, Korea.
Edibility Rating    (1 of 5)
Other Uses    (0 of 5)
Weed Potential Yes
Medicinal Rating    (1 of 5)
Care (info)
Fully Hardy Moist Soil Semi-shade
Corydalis incisa Incised fumewort


http://commons.wikimedia.org/wiki/User:KENPEI
Corydalis incisa Incised fumewort
http://commons.wikimedia.org/wiki/User:KENPEI

 

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Summary


Physical Characteristics

 icon of manicon of flower
Corydalis incisa is a ANNUAL/BIENNIAL growing to 0.3 m (1ft).
It is hardy to zone (UK) 7. The species is hermaphrodite (has both male and female organs) and is pollinated by Bees.
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 semi-shade (light woodland). It prefers moist soil.

UK Hardiness Map US Hardiness Map

Synonyms

Fumaria incisa Thunb. (NGRP, 2017), Capnoides incisa Kuntze (The Plant List, 2017). The Plant List (2017) lists additional synonyms at the infraspecific level.

Habitats

Woodland Garden Dappled Shade; Shady Edge;

Edible Uses

Edible Parts: Leaves
Edible Uses:

Young plant - cooked in spring[177, 178, 179]. Slightly deleterious[178].

References

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.
Miscellany

The dried and powdered flowers are used in the treatment of rectal collapse[218]. An aqueous decoction of the plant is used in the treatment of abscesses[218]. Used in China and Japan in folk medicine to treat inflammation, headaches, skin diseases, and other ailments [1-7].

References

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FOOD FOREST PLANTS

Other Uses

Miscellany

None known

Special Uses

References

Cultivation details

Can be invasive outside its natural range. Corydalis incisa is an annual or biennial, spring-ephemeral herb. Seeds germinate in the spring and develop small rosettes, which wither during the summer. They emerge again as rosettes throughout the winter and produce compact flowering racemes the following spring [1-7]. In its native range in Asia, C. incisa occurs along stream valleys, irrigation channels, and forest margins; in wastelands, roadsides, and forestlands; and on rock walls. In the United States, it grows in mesic and alluvial forest habitats. Under horticultural conditions, C. incisa prefers cooler exposures [1-7]. The known distribution globally has Plant Hardiness Zones 6-10, areas with 20-100+ inches of annual precipitation, and the following Köppen-Geiger climate classes: humid subtropical, marine west coast, humid continental with warm summers, and humid continental with cool summers. There is no evidence that C. incisa occurs in Mediterranean climates. It is potentially suitable because the plants usually are dormant during the summer when conditions are driest in Mediterranean climates [1-7]. The following notes are based on the general needs of the genus. Prefers a moist, well-drained rather light soil, thriving in semi-shade[1]. Grows well in a woodland garden or peat bed. Plants seem to be immune to the predations of rabbits[233].

References

Temperature Converter

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Propagation

Seed - best sown as soon as it is ripe, the seed rapidly loses viability if it is allowed to become dry[129]. Surface sow and keep moist, it usually germinates in 1 - 3 months at 15°c[164]. Germinates in spring according to another report[129]. Two months warm, then a cold stratification improves the germination of stored seed[134, 164]. Seedlings only produce one leaf in their first year of growth[175] and are very prone to damping off[129]. This species is a biennial and probably germinates more easily than the perennial species.

Other Names

If available other names are mentioned here

Incised fumewort, Purple Keman, Murasa-kike-man (Japanese)[1-7].

Found In

Countries where the plant has been found are listed here if the information is available

Native to China, Korea, Japan, and Taiwan [1-7]. Introduced to Australia, USA, United Kingdom and is cultivated in the United Kingdom and possibly France, where seeds are sold online. This species does not appear to be commonly cultivated in Europe [1-7].

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.

C. incisa exhibits a strong ability to escape and spread. It is self-compatible with a high reproductive capacity. C. incisa is an emerging invader that poses a threat for some natural, production, and anthropogenic systems in the United States. Given that this species has only recently become invasive, there is little detailed information on its impacts. In New York, USA, dense populations of C. incisa dominate the understory, displacing native species and increasing the density of the herbaceous community. US Homeowners have been struggling to get rid of established plants through hand-pulling and the use of a flame-torch. Remove the tuber. Do NOT compost. DO NOT allow to flower as the seed is set quickly and disperses widely [1-7].

Conservation Status

IUCN Red List of Threatened Plants Status : Not Listed.

Related Plants
Latin NameCommon NameHabitHeightHardinessGrowthSoilShadeMoistureEdibleMedicinalOther
Corydalis ambigua Perennial0.2 5-9  LMSM13 
Corydalis aureaScrambled EggsAnnual/Biennial0.5 5-9  LMSM02 
Corydalis cava Perennial0.2 5-9  LMSM03 
Corydalis edulis Perennial0.0 -  LMSM10 
Corydalis falconeri Perennial0.0 -  LMSM00 
Corydalis govaniana Perennial0.0 -  LMSNM02 
Corydalis intermedia Perennial0.2 -  LMSM01 
Corydalis juncea Perennial0.0 -  LMSNM10 
Corydalis ochotensis Biennial1.0 -  LMSNM10 
Corydalis pallida Biennial0.3 -  LMSNM10 
Corydalis solidaFumewort, Spring fumewortPerennial0.2 5-9  LMSM13 
Corydalis ternataThree-Leaf CorydalisPerennial0.2 -  LMSNM02 
Corydalis vaginans Annual/Biennial0.0 4-8  LMSNM01 
Corydalis yanhusuoYan Hu SuoPerennial0.0 -  LMSNM03 

Growth: S = slow M = medium F = fast. Soil: L = light (sandy) M = medium H = heavy (clay). pH: A = acid N = neutral B = basic (alkaline). Shade: F = full shade S = semi-shade N = no shade. Moisture: D = dry M = Moist We = wet Wa = water.

 

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(Thunb.)Pers.

Botanical References

58

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Readers comment

Diane Leech   Fri Oct 23 2009

We have some bulbs but do not know which way to plant it. Do not want to plant upside down

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