LEAF SPINE

Leaf spine: a spine is a modified leaf or leaf primordium; also there may be a leaflet spine.

Examples:

  1. The globular cactus Coryphantha bumamma
  2. A Mexican cactus, Mammillaria compressa
  3. A grusonia opuntioid (cactus) of central Baja California
  4. Leaf spines formed on the areoles of a platyopuntia stem
  5. Leaf spines on joints of jumping cholla, Cylindropuntia fulgida
  6. Specialized barbed deciduous leaf spines of opuntias, called glochids, on areoles of Opuntia microdasys; a closer view; SEM of glochids; SEM of the barbed tip of a glochid
  7. Spines of organpipe cactus, Stenocereus thurberi
  8. Spines of a palm formed by the shredding of the leaf base
  9. Leaf spines of barberries, such as Berberis linearifolia from Chile; a view of young, differentiating spines; a cultivated species in the United States
  10. Leaflet spines of the genus of date palms, Phoenix

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