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Athyrium yokoscense - (Franch.&Sav.)Christ.
                 
Common Name
Family Dryopteridaceae
USDA hardiness 6-9
Known Hazards Although we have found no reports of toxicity for this species, a number of ferns contain carcinogens so some caution is advisable[200]. Many ferns also contain thiaminase, an enzyme that robs the body of its vitamin B complex. In small quantities this enzyme will do no harm to people eating an adequate diet that is rich in vitamin B, though large quantities can cause severe health problems. The enzyme is destroyed by heat or thorough drying, so cooking the plant will remove the thiaminase[172].
Habitats Woods in lowland and mountains all over Japan[58]. Thin deciduous woods and thickets[74].
Range E. Asia - China, Japan, Korea.
Edibility Rating  
Other Uses  
Weed Potential No
Medicinal Rating  
Care
Fully Hardy Moist Soil Wet Soil Full shade Semi-shade

Summary

Athyrium yokoscense


Athyrium yokoscense
   
Physical Characteristics
 icon of manicon of fern
Athyrium yokoscense is a FERN growing to 0.3 m (1ft).
It is hardy to zone (UK) 7. Suitable for: light (sandy), medium (loamy) and heavy (clay) soils, prefers well-drained soil and can grow in heavy clay soil. Suitable pH: acid, neutral and basic (alkaline) soils and can grow in very acid soils.
It can grow in full shade (deep woodland) or semi-shade (light woodland). It prefers moist or wet soil.

Synonyms

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

Very young fronds (croziers) - boiled[177]. 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
An easily grown plant, it is calcifuge and prefers an acid soil with a pH from 4.5 to 6.5, but it tolerates alkaline soils if plenty of leaf mould is added[200]. Grows well in heavy clay soils. Prefers a moist sheltered site with moderately high atmospheric humidity[200]. Succeeds in a semi-shaded bog-garden or in damp woodland, also in garden borders in full or part shade[200]. This species is very variable, partly according to altitudes and habitats[275]. Plants growing on sunny rocks and in high mountains look like Athyrium rupestre and may be distinguished as var. alpicola[275]. Lowland plants with deeply tripinnatifid leaves may be called var. dilatatum[275]. Members of this genus are rarely if ever troubled by browsing deer[233].
Propagation
Spores - surface sow in a pot of sterile compost in a shady part of the greenhouse and keep moist, this is most easily done by putting the pot in a plastic bag. Pot up small clumps of the plants when they are large enough to handle and keep them moist until they are established. Plant out in late spring of the following year. Division in spring as plants come into growth. Larger divisions can be planted straight into their permanent positions whilst smaller clumps are best potted up and kept in a cold frame until they are growing away well.
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
Athyrium filix-feminaLady Fern, Common ladyfern, Subarctic ladyfern, Asplenium ladyfern, Southern Lady Fern, Tatting Fer12
Athyrium melanolepis 10
Athyrium niponicumPainted Fern, Japanese Silver Painted Fern10
Athyrium rubripes 10
Athyrium squamigerum 10
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Expert comment
 
Author
(Franch.&Sav.)Christ.
Botanical References
5874200
Links / References
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Subject : Athyrium yokoscense  

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