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Asteraceae
Youngia

not marked as a favorite taxon *Youngia japonica (Linnaeus) A.P. de Candolle. Common name: Asiatic Hawk’s-beard, Youngia. Phenology: Dec-Jun. Habitat: Flowerbeds, suburban woodlands, roadsides, disturbed areas, trail edges, hammocks, rocky woodlands, floodplains. Distribution: Native of se. Asia. Kelley (2021b) reported distribution records in OK. This species has spread rapidly in our region, and is now moving into minimally-disturbed natural areas.

Glossary (beta!)

Origin/Endemic status: E. and se. Asia

Synonymy ⓘ: = Bah, K4, Urbatsch, Pruski, & Neubig (2013); = n/a — Pa, Tat; = Youngia japonica (L.) DC. ssp. japonica — FNA19, POWO, not formally treated; < Crepis japonica (L.) Benth. — F, G, RAB, S; < Youngia japonica (L.) DC. — Ar, C, Fl7, FNA19, Il, NcTx, SE1, Tn, Va, WH3; Prenanthes japonica Linnaeus. Basionym: Prenanthes japonica L. 1767

Links to other floras: < Youngia japonica - FNA19; = Youngia japonica ssp. japonica - FNA19

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: FACU (taxonomic split from wetland indicator species)
  • Eastern Mountains and Piedmont: FACU (taxonomic split from wetland indicator species)
  • Great Plains: FACU (taxonomic split from wetland indicator species)
  • Midwest: FACU (taxonomic split from wetland indicator species)
  • Northcentral & Northeast: FACU (taxonomic split from wetland indicator species)

Heliophily ⓘ: 5

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image #1 of Youngia japonica© Keith Bradley | Original Image ⭷
image #2 of Youngia japonica© Bruce A. Sorrie | Original Image ⭷
image #3 of Youngia japonica© Gary P. Fleming | Original Image ⭷
image #4 of Youngia japonica© Scott Ward, some rights reserved (CC BY), uploaded by Scott Ward source CC-BY | Original Image ⭷
image #5 of Youngia japonica© Lowell Urbatsch | Original Image ⭷
image #6 of Youngia japonica© Bruce Sorrie | Original Image ⭷
image #7 of Youngia japonica© Joey Shaw source | Original Image ⭷
image #9 of Youngia japonica© Bruce Sorrie | Original Image ⭷
image #10 of Youngia japonica© Gary P. Fleming | Original Image ⭷
image #12 of Youngia japonica© Bruce A. Sorrie | Original Image ⭷
image #13 of Youngia japonica© Erik Danielson source | Original Image ⭷
image #15 of Youngia japonica© Scott Ward, some rights reserved (CC BY), uploaded by Scott Ward source CC-BY | Original Image ⭷
image #16 of Youngia japonica© Scott Ward, some rights reserved (CC BY), uploaded by Scott Ward source CC-BY | Original Image ⭷
image #18 of Youngia japonica© Scott Ward, some rights reserved (CC BY), uploaded by Scott Ward source CC-BY | Original Image ⭷
image #20 of Youngia japonica© Scott Ward, some rights reserved (CC BY), uploaded by Scott Ward source CC-BY | Original Image ⭷

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Horticultural Information

NCBG trait

Intro: Tap-rooted annual found on trail edges, roadsides, clearings, and other disturbed, open or shaded habitats. Native of southeast Asia,

Stems: Stems 1-several from a basal rosette, may be reddish-purple-tinged, hairy below and smoother above.

Leaves: Leaves mostly basal; petiolate; oblong-lance-shaped; 2-5 in. long; divided into very irregular, quasi-pinnate segments with jagged edges; pale green with reddish-purple tints; densely hairy, the hairs often brownish and crinkled.

Inforescence:

Flowers: Composite flowers (heads) in small branching cluster at stem top, the closed heads fig-shaped; heads bright yellow, about 1/3 in. wide, consisting of 10-20 ray florets with squared-off, 5-toothed tips. A series of narrow, green bracts with fleshy midribs surrounds the cylindric base of each head.

Fruits:

Comments: This species is spreading rapidly in our area, recently moving into minimally disturbed natural areas.

Height: 4-28 in.

plant sale text:

bloom table text:

description: Tap-rooted annual found on trail edges, roadsides, clearings, and other disturbed, open or shaded habitats. Native of southeast Asia,

stems: Stems 1-several from a basal rosette, may be reddish-purple-tinged, hairy below and smoother above.

leaves: Leaves mostly basal; petiolate; oblong-lance-shaped; 2-5 in. long; divided into very irregular, quasi-pinnate segments with jagged edges; pale green with reddish-purple tints; densely hairy, the hairs often brownish and crinkled.

inflorescence:

flowers: Composite flowers (heads) in small branching cluster at stem top, the closed heads fig-shaped; heads bright yellow, about 1/3 in. wide, consisting of 10-20 ray florets with squared-off, 5-toothed tips. A series of narrow, green bracts with fleshy midribs surrounds the cylindric base of each head.

fruits:

comments: This species is spreading rapidly in our area, recently moving into minimally disturbed natural areas.

cultural notes:

germination code:

native range: southeastern Asia



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