Japanese Hawksbeard (Crepis japonica), also known as Nippon Hawksbeard, is a small annual or biennial herb in the family Asteraceae, closely related to the Oriental False Hawksbeard (Youngia japonica) and similarly used as a wild vegetable in East Asia. Its tender, dandelion-like basal leaves are gathered as a potherb in Japan, Korea, and China, particularly in spring when the leaves are most tender.
• Despite the name, molecular studies have shown that many plants called Crepis japonica actually belong to the genus Youngia — the taxonomy remains debated
• The genus name Crepis comes from the Greek word for "slipper," referring to the shape of the fruit
• A common sight on roadsides and in meadows across East Asia
• The basal leaves are very similar to dandelion leaves but smaller and less bitter
• Often confused with Youngia japonica, and the two species are used interchangeably as vegetables
• In traditional Chinese medicine, used for its anti-inflammatory properties
Crepis japonica is native to East Asia.
• Found in Japan, Korea, China, and Taiwan
• Also occurs in Southeast Asia and the Himalayan region
• Naturalized in parts of North America, Australia, and other temperate regions
• Grows in grasslands, meadows, roadsides, forest edges, and disturbed ground
• Found at elevations from sea level to approximately 2,000 meters
• Has been gathered as a wild food for centuries in East Asia
• First described by Linnaeus in 1753 (as Hieracium japonicum, later transferred to Crepis)
• Some authorities now classify this species within Youngia
• The taxonomy of the Crepis-Youngia complex is under active revision
• Used in traditional medicine in China, Korea, and Japan
• Found in Japan, Korea, China, and Taiwan
• Also occurs in Southeast Asia and the Himalayan region
• Naturalized in parts of North America, Australia, and other temperate regions
• Grows in grasslands, meadows, roadsides, forest edges, and disturbed ground
• Found at elevations from sea level to approximately 2,000 meters
• Has been gathered as a wild food for centuries in East Asia
• First described by Linnaeus in 1753 (as Hieracium japonicum, later transferred to Crepis)
• Some authorities now classify this species within Youngia
• The taxonomy of the Crepis-Youngia complex is under active revision
• Used in traditional medicine in China, Korea, and Japan
A small, annual or biennial herb growing 10 to 40 cm tall.
Basal Rosette:
• Leaves form a rosette at ground level, 5 to 15 cm across
• Leaves oblanceolate to spatulate, 3 to 10 cm long, runcinate (deeply lobed with backward-pointing lobes)
• Bright green, hairless to slightly hairy
• Similar to small dandelion leaves
Flowering Stems:
• Slender, erect, branched above
• With small bract-like leaves
Flowers:
• Bright yellow, in loose corymbose clusters
• Flower heads 8 to 12 mm in diameter
• All florets ligulate (tongue-shaped), bright yellow
• Blooms from spring through autumn
Fruit:
• Small achene, 2 to 3 mm, tapering to a beak
• With a pappus of soft white bristles
• Wind-dispersed
• Very abundant seed production
Basal Rosette:
• Leaves form a rosette at ground level, 5 to 15 cm across
• Leaves oblanceolate to spatulate, 3 to 10 cm long, runcinate (deeply lobed with backward-pointing lobes)
• Bright green, hairless to slightly hairy
• Similar to small dandelion leaves
Flowering Stems:
• Slender, erect, branched above
• With small bract-like leaves
Flowers:
• Bright yellow, in loose corymbose clusters
• Flower heads 8 to 12 mm in diameter
• All florets ligulate (tongue-shaped), bright yellow
• Blooms from spring through autumn
Fruit:
• Small achene, 2 to 3 mm, tapering to a beak
• With a pappus of soft white bristles
• Wind-dispersed
• Very abundant seed production
Crepis japonica is a widespread East Asian annual closely related to Youngia japonica and occupying similar pioneer habitats.
Habitat:
• Native to East Asia — found in Japan, Korea, China, and Taiwan
• Also occurs in Southeast Asia and the Himalayan region
• Naturalized in parts of North America, Australia, and other temperate regions
• Grows in grasslands, meadows, roadsides, forest edges, and disturbed ground
• Found at elevations from sea level to approximately 2,000 meters
• Prefers moist, well-drained soils but tolerates compacted and nutrient-poor substrates
• USDA zones 5–10 (temperate to subtropical)
Growth Habit:
• Small, annual or biennial herb growing 10 to 40 cm tall
• Forms a basal rosette of runcinate (deeply lobed) leaves similar to dandelion
• Fast-growing, completing its life cycle in 40 to 60 days under favorable conditions
• Full sun to partial shade; commonly found along forest edges and paths
• Can produce multiple generations per year in warm, moist climates
Pollination:
• Small yellow composite flowers are primarily self-pollinating
• Visited by diverse small insects including solitary bees, hoverflies, and small beetles
• Self-compatible — ensures seed production even in isolated populations
• Seeds are wind-dispersed via pappus bristles, similar to dandelions
Ecological Role:
• Pioneer species that colonizes disturbed ground alongside Youngia japonica and other early successional herbs
• Wind-dispersed seeds readily colonize new habitats including volcanic soils and landslide areas
• Basal rosette provides early spring ground cover that helps reduce soil erosion
• Flowers provide nectar and pollen for small pollinators in meadow and edge habitats
• Leaves serve as food for various herbivorous insects including leaf beetles and caterpillars
• Used in traditional medicine in China, Korea, and Japan for anti-inflammatory properties
Invasive Status:
• Not considered invasive or problematic in most regions
• Some taxonomic confusion with Youngia japonica means its exact introduced range is uncertain
• Generally coexists peacefully with native flora in its introduced range
Habitat:
• Native to East Asia — found in Japan, Korea, China, and Taiwan
• Also occurs in Southeast Asia and the Himalayan region
• Naturalized in parts of North America, Australia, and other temperate regions
• Grows in grasslands, meadows, roadsides, forest edges, and disturbed ground
• Found at elevations from sea level to approximately 2,000 meters
• Prefers moist, well-drained soils but tolerates compacted and nutrient-poor substrates
• USDA zones 5–10 (temperate to subtropical)
Growth Habit:
• Small, annual or biennial herb growing 10 to 40 cm tall
• Forms a basal rosette of runcinate (deeply lobed) leaves similar to dandelion
• Fast-growing, completing its life cycle in 40 to 60 days under favorable conditions
• Full sun to partial shade; commonly found along forest edges and paths
• Can produce multiple generations per year in warm, moist climates
Pollination:
• Small yellow composite flowers are primarily self-pollinating
• Visited by diverse small insects including solitary bees, hoverflies, and small beetles
• Self-compatible — ensures seed production even in isolated populations
• Seeds are wind-dispersed via pappus bristles, similar to dandelions
Ecological Role:
• Pioneer species that colonizes disturbed ground alongside Youngia japonica and other early successional herbs
• Wind-dispersed seeds readily colonize new habitats including volcanic soils and landslide areas
• Basal rosette provides early spring ground cover that helps reduce soil erosion
• Flowers provide nectar and pollen for small pollinators in meadow and edge habitats
• Leaves serve as food for various herbivorous insects including leaf beetles and caterpillars
• Used in traditional medicine in China, Korea, and Japan for anti-inflammatory properties
Invasive Status:
• Not considered invasive or problematic in most regions
• Some taxonomic confusion with Youngia japonica means its exact introduced range is uncertain
• Generally coexists peacefully with native flora in its introduced range
The leaves are a nutritious wild green.
• Per 100 g fresh leaves: approximately 20 to 30 kcal
• Contains vitamins A and C
• Provides iron, calcium, and potassium
• Good source of dietary fiber
• Contains bitter sesquiterpene lactones
• Rich in antioxidant compounds
• Low in calories and fat
• Similar nutritional profile to dandelion greens
• Per 100 g fresh leaves: approximately 20 to 30 kcal
• Contains vitamins A and C
• Provides iron, calcium, and potassium
• Good source of dietary fiber
• Contains bitter sesquiterpene lactones
• Rich in antioxidant compounds
• Low in calories and fat
• Similar nutritional profile to dandelion greens
Not typically cultivated; gathered from the wild.
• Can be grown from seed if desired
• Sow seeds in spring or autumn
• Grows in virtually any soil
• Tolerates full sun to partial shade
• Requires no special care
• Harvest basal rosette leaves before flowering
• Spring leaves are most tender and least bitter
• Self-seeds readily
• Wild harvesting is the traditional and practical approach
• Common in lawns and meadows — easy to find and identify
• Ensure harvesting area is free from pesticides and pollution
• Can be grown from seed if desired
• Sow seeds in spring or autumn
• Grows in virtually any soil
• Tolerates full sun to partial shade
• Requires no special care
• Harvest basal rosette leaves before flowering
• Spring leaves are most tender and least bitter
• Self-seeds readily
• Wild harvesting is the traditional and practical approach
• Common in lawns and meadows — easy to find and identify
• Ensure harvesting area is free from pesticides and pollution
Culinary uses:
• Young leaves are eaten raw in salads — mild, slightly sweet
• Boiled or steamed as a potherb in East Asian cuisine
• Used in Japanese tempura and ohitashi
• Added to miso soup and clear dashi broth
• In Korea, used in namul preparations
• In China, stir-fried with garlic or added to congee
• Can be used as a substitute for dandelion greens in any recipe
• The mild flavor makes it versatile for both raw and cooked preparations
• Combined with other wild greens in sansai (mountain vegetable) dishes
• Used in Korean cold soup (naengguk) preparations
• Young leaves are eaten raw in salads — mild, slightly sweet
• Boiled or steamed as a potherb in East Asian cuisine
• Used in Japanese tempura and ohitashi
• Added to miso soup and clear dashi broth
• In Korea, used in namul preparations
• In China, stir-fried with garlic or added to congee
• Can be used as a substitute for dandelion greens in any recipe
• The mild flavor makes it versatile for both raw and cooked preparations
• Combined with other wild greens in sansai (mountain vegetable) dishes
• Used in Korean cold soup (naengguk) preparations
재미있는 사실
Japanese hawksbeard is so common in East Asian cities that it grows in sidewalk cracks — yet most people don't realize this humble weed is a traditional spring vegetable
더 보기댓글 (0)
아직 댓글이 없습니다. 첫 댓글을 남겨보세요!
