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horned dandelion

Habit Plants 3–30+ cm.
Stems

glabrous or sparsely villous.

Leaves

narrowly lanceolate to linear-oblong, 2–20+ × 0.5–4 cm;

margins dentate to pinnately or irregularly lobed;

surfaces usually glabrous, sometimes villous proximally, sessile to petiolate and winged.

Involucres

8–18 mm;

surfaces glabrous.

Florets

35–80+;

ligules 12–25 mm, yellow.

Phyllaries

10–15, usually with small; knob-like or horn-like projections at tips; outer erect; < inner.

Fruits

bodies 2.5–4 mm, tan to brown or olive;

ribs ~15;

beaks 4.5–14 mm;

pappus bristles white.

2n

=16, 32, 40, 48.

Taraxacum ceratophorum

Distribution
[WildflowerSearch map]
[BONAP county map]
Discussion

Moist rocky slopes, wet meadows, early snow-melt areas. Flowering Mar–Oct. 0–1800 m. BW, Col, CR, ECas, Est, Sisk, WV. CA, ID, NV, WA; north to AK, northeast to Greenland, southeast to NM. Native.

Source Flora of Oregon, volume 2, page 361
Kenton Chambers
Sibling taxa
T. erythrospermum, T. officinale
Synonyms Taraxacum paucisquamosum
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