e-Key v3 - Key to Lactuceae Genera
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.
  • Key after Hilliard: 596 (1977)
Backtrack a
  • Pappus of small scales up to 2 mm long
* Cichorium
b
  • Pappus of hairs or bristles at least 4 mm long
002
Backtrack a
  • Hairs of pappus feathery or at least inner ones so
002
b
  • Hairs of pappus not feathery, at most somewhat barbellate
002
Backtrack a
  • Receptacular paleae present
* Hypochaeris
b
  • Receptacular paleae 0
002
Backtrack a
  • Plants glabrous at maturity, sometimes floccose when young
* Tragopogon
b
  • Plants rough hairy
002
Backtrack a
  • Pappus in 1 row
  • Fruit with a stout hollow beak
* Urospermum
b
  • Pappus in 2 rows
  • Fruit beak slender, not hollow
* Picris
Backtrack a
  • Cypselas 2-3.5 mm long, obconic, truncate above, pappus of comparatively few coarse scabrid bristles
Tolpis
b
  • Cypselas and pappus not as above
002
Backtrack a
  • Cypselas tuberculate in upper part with a long slender beak
  • Scapes one-headed, hollow
* Taraxacum
b
  • Cypselas and scapes not as combined above, or plants not scapigerous
002
Backtrack a
  • Pappus dimorphic
002
b
  • Pappus of setae only, monomorphic, rarely with an outer ring of very short setae
002
Backtrack a
  • Pappus of setae and fine down-like hairs intermixed
Sonchus
b
  • Pappus in outer florets a small corona, in inner florets of few coarse, basally flattened and scale-like, scabrid bristles
* Hedypnois
Backtrack a
  • Cypselas truncate, without ascending hairs or ascending rough projections on the ribs or margins
Launaea
b
  • Cypselas beaked or at least somewhat attenuate above with ascending hairs or rough projections on the ribs or at least on the margins
002
Backtrack a
  • Cypselas ± compressed and equal-ribbed, with ascending evident or submicroscopic hairs on the ribs or at least the margins
  • Involucres mostly cylindrical
* Lactuca
b
  • Cypselas ± terete and equal-ribbed, rough with ascending projections on the ribs
  • Involucres usually obconic
002
Backtrack a
  • Capitula many-flowered
  • Involucre hairy
* Crepis
b
  • Capitula with 8-15 flowers
  • Involucre glabrous
* Youngia

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