Taraxacum officinale ssp. ceratophorum

Taraxacum umbrinum Dahlst. ex G.E. Haglund:
Greenland (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.

Taraxacum longii Fernald:
Canada (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.

Taraxacum ambigens var. fultius Fernald:
Canada (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.

Taraxacum dumetorum Greene:
Canada (North America)
United States (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.

Taraxacum paucisquamosum M. Peck:
United States (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.

Taraxacum eriophorum Rydb.:
United States (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.

Taraxacum ceratophorum (Ledeb.) DC.:
Canada (North America)
United States (North America)

Note: This information is based on publications available through Tropicos and may not represent the entire distribution. Tropicos does not categorize distributions as native or non-native.

Canada

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

Type of Residency: Year-round

United States

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

Type of Residency: Year-round

Canada

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

United States

Origin: Unknown/Undetermined

Regularity: Regularly occurring

Currently: Unknown/Undetermined

Confidence: Confident

Global Range: AK south to WA and WY. Sparse.

Plants (1–)6–50 cm; taproots branched. Stems 1–10+, ascending to erect, ± purplish (at least proximally), densely villous (young) becoming glabrescent, sparsely villous to glabrate or glabrous proximally, ± densely villous distally. Leaves ± 10, horizontal to patent, sometimes erect; sessile or petioles ± broadly winged (bases barely narrowed compared to blades); blades narrowly oblanceolate to linear-oblanceolate or linear-oblong (often ± runcinate), 4–30 × (0.4–)0.5–5 cm, bases cuneate to attenuate, margins lobed ± deeply to lacerate, irregularly to regularly, often toothed, merely denticulate, or subentire, lobes retrorse, straight or antrorse, deltate to triangular, acute to acuminate, teeth 0–1 on lobes, often more or mostly in sinuses, apices obtuse to sometimes acute, sometimes mucronate, faces glabrous or glabrate to very sparsely villous. Calyculi of 12–16(–20), appressed to spreading, pale, ovate to elliptic or lance-ovate to lanceolate (sometimes thin) bractlets in 2–3 series, 5–12 × (0.9–)1.5–5 mm, margins hyaline, white or purplish, scarious, apices caudate to acuminate, ± strongly horned, callous, or occasionally some (rarely all) hornless, tips obtuse to rounded, scarious, erose. Involucres dark green, sometimes ± glaucous, campanulate to ± hemispheric, (5–)8–19(–21) mm. Phyllaries (10–)12–14(–17) in 2 series, lanceolate to ovate-lanceolate (inner), 1.5–4.5 mm wide, margins scarious or not (outer), inner broadly scarious in proximal ¹/2, apices usually horned, occasionally hornless, horns sometimes exceeding apices, tips white to purplish, scarious, erose. Florets 40–85+; corollas yellow, drying cream to whitish (outer abaxially gray or purple-striped on drying), 10–22 × 1–2.8 mm. Cypselae olivaceous to olive brown, tan to olivaceous tan, brown to reddish brown, grayish brown or straw-colored, bodies oblanceoloid to obovoid, 2.5–4(–5) mm wide, cones conic or narrowly conic to broadly terete, 0.5–0.9 mm, beaks slender, 4.5–14 mm, ribs 5, large (bearing 10–15 narrower ones), faces proximally tuberculate or sometimes nearly smooth (usually with at least some tubercules) to muricate in distal ¹/3–¹/2, sometimes wholly muricate; pappi white to cream, 5–7.5(–8) mm. 2n = 16, [24], 32, 40, 48.

Leontodon ceratophorus Ledebour, Icon. Pl. 1: 9, plate 34. 1829; Taraxacum ambigens Fernald var. fultius Fernald; T. angulatum G. E. Haglund; T. arctogenum Dahlstedt; T. brachyceras Dahlstedt; T. carthamopsis A. E. Porsild; T. coverum R. Doll; T. dumetorum Greene; T. eriophorum Rydberg; T. eurylepium Dahlstedt; T. groenlandicum Dahlstedt; T. hyperboreum Dahlstedt; T. integratiforme R. Doll; T. integratum G. E. Haglund; T. lacerum Greene; T. lateritium Dahlstedt; T. longii Fernald; T. mackenziense A. E. Porsild; T. malteanum Dahlstedt ex G. E. Haglund; T. maurolepium G. E. Haglund; T. microcerum R. Doll; T. ovinum Greene; T. pellianum A. E. Porsild; T. pseudonorvegicum Dahlstedt ex G. E. Haglund; T. umbriniforme R. Doll; T. umbrinum Dahlstedt ex G. E. Haglund

Our 5 species of TARAXACUM are all quite similar. T. ERIOPHORUM can be distinguished from the two exotic species by its erect, rather than reflexed, outer involucral bracts. It is distinguished from other native dandelions by its reddish, distinctly 4-angled achenes. A hand lens may be necessary to identify this plant.

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 7
Specimens with Barcodes: 26
Species With Barcodes: 1

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Specimens with Barcodes: 5
Species With Barcodes: 1

Canada

Rounded National Status Rank: N5 - Secure

United States

Rounded National Status Rank: N5 - Secure

Rounded Global Status Rank: T5 - Secure

Canada

Rounded National Status Rank: NNR - Unranked

United States

Rounded National Status Rank: NNR - Unranked

Rounded Global Status Rank: G4 - Apparently Secure