Collenchyma

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Collenchyma
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Types of Collenchyma

• Angular collenchyma
• Lamellar collenchyma
• Lacunar collenchyma
• Annular collenchyma

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Angular collenchyma in angelica stem
Early development of collenchyma
Mature stem
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Angular collenchyma in celery
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Angular collenchyma
Apium (celery) petiole
Rumex (dock) stem
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Angular collenchyma in burdock petiole

• Helicoid arrangement of cellulose microfibrils
  give the appearance of a multi-layered wall in
  thicker wall areas
• In thin areas of wall cellulose microfibrils are
  longitudinal

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Ivy angular collenchyma
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Collenchyma in Curcubita stem
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Nymphaea angular collenchyma
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Angular collenchyma in parsnip stem
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Petiole of pumpkin leaf
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Collenchyma in ice plant leaf
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Lamellar collenchyma incosmos stem
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Lamellar collenchyma in castor-bean stem
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Lamellar collenchyma in Sambucus stem
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Semi-lamellar collenchyma in birch petiole
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Lacunar collenchyma in Datura stem
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Annular collenchyma in carrot petiole