text: Perennial plants whose leaves are shed annually are said to have deciduous leaves, while leaves that remain through winter are evergreens. 
  Leaves attached to stems by stalks (known as petioles) are called petiolate, and if attached directly to the stem with no petiole they are called sessile.
  * Ferns have fronds.
  * Conifer leaves are typically needle- or awl-shaped or scale-like, they are usually evergreen, but can sometimes be deciduous. Usually, they have a single vein.
  * Flowering plant (Angiosperm) leaves: the standard form includes stipules, a petiole, and a lamina.
  * Lycophytes have microphylls.
  * Sheath leaves are the type found in most grasses and many other monocots.
  * Other specialized leaves include those of Nepenthes, a pitcher plant.
  Dicot leaves have blades with pinnate venation (where major veins diverge from one large mid-vein and have smaller connecting networks between them). Less commonly, dicot leaf blades may have palmate venation (several large veins diverging from petiole to leaf edges). Finally, some exhibit parallel venation.
  Monocot leaves in temperate climates usually have narrow blades, and usually parallel venation converging at leaf tips or edges. Some also have pinnate venation.