Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Campanulids: Asterales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Youngia japonica
FAMILY
Asteraceae_
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Check out EDDMapS.org to see where this has been reported.
Read more about Asiatic Hawksbeard at Vascular Plants of North Carolina.
Spreading rapidly in our area, and now moving into minimally-disturbed natural areas, per Weakley's Flora (2022)
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Youngia japonica
FAMILY
Asteraceae_
SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Youngia japonica
INCLUDED WITHIN Flora of North America
Youngia japonica
INCLUDED WITHIN Floristic Synthesis of North America (Kartesz, 1999)
Youngia japonica
INCLUDED WITHIN VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-11-001:
Crepis japonica FAMILY Asteraceae_
INCLUDED WITHIN Manual of the Southeastern Flora (Small, 1933, 1938)
Crepis japonica
COMMON NAME:
Asiatic Hawksbeard, Youngia, Japanese Crepis, Oriental False Hawksbeard
To see larger pictures, click or hover over the thumbnails.
)
JK Marlow jkm120330_186
March Pickens County SC
Basal leaves oblanceolate, pinnatisect to runcinate [as in Taraxacum], per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
)
JK Marlow jkm120330_188b
March Pickens County SC
Rays 5-6mm long, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
)
JK Marlow jkm120330_193
March Pickens County SC
Involucres 5-6mm long, 1.5-2.5mm broad; inner bracts linear, outer very short, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
COMPARE
involucral bracts of DYCs with ray flowers only (no disc)
)
JK Marlow jkm180331_196
March Horry County SC
Myrtle Beach State Park
Plants are typically about 1' tall but vary considerably, per Atlantic Coastal Plain Wildflowers (Nelson, 2006).
)
JK Marlow jkm180331_199
March Horry County SC
Myrtle Beach State Park
)
JK Marlow jkm180331_199b
March Horry County SC
Myrtle Beach State Park
Flower heads are small and composed of 10-20 ray flowers, per Atlantic Coastal Plain Wildflowers (Nelson, 2006).
)
Richard and Teresa Ware rtw_youngia_japonica_3
March
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JK Marlow jkm150407_123124
April Greenville County SC
Swamp Rabbit Trail
)
JK Marlow jkm160405_030
April Greenville County SC
)
Gill Newberry gn05_c_yongia_japonica
May
Spreading rapidly here, now moving into minimally-disturbed natural areas, per Weakley's Flora (2012).
)
JK Marlow jkm140504_760762
May Greenville County SC
Swamp Rabbit Trail
)
JK Marlow jkm140504_764766
May Greenville County SC
Swamp Rabbit Trail
)
Keith Bradley kab_y_japonica_77089
July Miami-Dade County FL
COMPARE
Dandelions and Dandelion-like species
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Youngia japonica
FAMILY
Asteraceae_
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Youngia japonica
FAMILY
Asteraceae_
SYNONYMOUS WITH
Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Youngia japonica
INCLUDED WITHIN
Flora of North America
Youngia japonica
INCLUDED WITHIN
Floristic Synthesis of North America (Kartesz, 1999)
Youngia japonica
INCLUDED WITHIN
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 179-11-001:
Crepis japonica
FAMILY
Asteraceae_
INCLUDED WITHIN
Manual of the Southeastern Flora (Small, 1933, 1938)
Crepis japonica
2112
Forb
Annual
Habitat: Flowerbeds, suburban woodlands, roadsides, disturbed areas, trail edges, hammocks, rocky woodlands, floodplains, per Weakley's Flora
Non-native: southeast Asia
Common (uncommon in Mountains)
Click here to see a map, notes, and images from Weakley's Flora of the Southeastern US.
Click here to see a map showing all occurrences known to SERNEC, a consortium of southeastern herbaria. (Zoom in to see more detail.)
DOES THE PLANT HAVE "MILKY SAP"?
Has milky sap (latex)
LEAVES:
Simple
Basal rosette & a few stem leaves
FLOWER:
Spring/Summer
Rays: Yellow
Disc: Absent
Ray flowers bisexual
Inferior ovary
FRUIT:
Spring/Summer
Reddish-brown
Achene
TO LEARN MORE about this plant, look it up in a good book!
- Atlantic Coastal Plain Wildflowers (Nelson, 2006) p184
- Wildflowers of the Atlantic Southeast (Cotterman, Waitt, & Weakley, 2019) p307