Pyrophytes are plants which have adapted to tolerate fire. "Pyrophyte" comes from the ancient Greek "pyros" (fire) and "phytos" (plant).

Fire acts favorably for some species. "Passive pyrophytes" resist the effects of fire, particularly when it passes over quickly, and hence can out-compete less resistant plants, which are damaged. "Active pyrophytes" have a similar competing advantage to passive pyrophytes, but in addition they also contain volatile oils and hence encourage the incidence of fires which are beneficial to them. "Pyrophile" plants are plants which require fire in order to complete their cycle of reproduction.

Passive pyrophytes

These resist fire with adaptations including thick bark, tissue with high moisture content, or underground storage structures. Examples include:

• giant sequoias
  Sequoiadendron
  Sequoiadendron giganteum is the sole living species in the genus Sequoiadendron, and one of three species of coniferous trees known as redwoods, classified in the family Cupressaceae in the subfamily Sequoioideae, together with Sequoia sempervirens and...
  
   (Sequoiadendron giganteum)
• Sequoia sempervirens
• Cork oak
  Cork Oak
  Quercus suber, commonly called the Cork Oak, is a medium-sized, evergreen oak tree in the section Quercus sect. Cerris. It is the primary source of cork for wine bottle stoppers and other uses, such as cork flooring. It is native to southwest Europe and northwest Africa.It grows to up to 20 m,...
  
   (Quercus suber L.)
• Niaouli (Melaleuca quinquenervia
  Melaleuca quinquenervia
  Melaleuca quinquenervia, commonly known as Niaouli or Broad-leaved paperbark or the Paper Bark Tea Tree, is a small- to medium-sized tree of the allspice family, Myrtaceae. The plant is native to New Caledonia, Papua New Guinea and coastal Eastern Australia, from Botany Bay in New South Wales...
  
  ) which is extending in areas where bush fires are a mode of clearing (e.g. New Caledonia
  New Caledonia
  New Caledonia is a special collectivity of France located in the southwest Pacific Ocean, east of Australia and about from Metropolitan France. The archipelago, part of the Melanesia subregion, includes the main island of Grande Terre, the Loyalty Islands, the Belep archipelago, the Isle of...
  
  ).
• Venus fly trap (Dionaea muscipula) - this grows low to the ground in acid marshes in South Carolina
  South Carolina
  South Carolina is a state in the Deep South of the United States that borders Georgia to the south, North Carolina to the north, and the Atlantic Ocean to the east. Originally part of the Province of Carolina, the Province of South Carolina was one of the 13 colonies that declared independence...
  
  , and resists fires passing over due to being close to the moist soil; fire suppression threatens the species in its natural environment.
• White Asphodel
  White asphodel
  Asphodelus albus, common name White asphodel, is a herbaceous perennial plant belonging to the genus Asphodelus.-Description:...
  
   (Asphodelus albus)

For some species of pine, such as Aleppo Pine

Aleppo Pine

Pinus halepensis, commonly known as the Aleppo Pine, is a pine native to the Mediterranean region. Their range extends from Morocco and Spain north to southern France, Italy and Croatia, and east to Greece and northern Tunisia, and Libya, with an outlying population in Syria, Lebanon, southern...

 (Pinus halepensis), European Black Pine

European Black Pine

Pinus nigra, the European Black Pine, is a moderately variable species of pine, occurring across southern Mediterranean Europe from Spain to the Crimea, in Asia Minor and on Cyprus, and in the high mountains of the Maghreb in North Africa....

 (Pinus nigra) and Lodgepole Pine

Lodgepole Pine

Lodgepole Pine, Pinus contorta, also known as Shore Pine, is a common tree in western North America. Like all pines, it is evergreen.-Subspecies:...

 (Pinus contorta), the effects of fire can be antagonistic: if moderate, it helps pine cone bursting, seed dispersion and the cleaning of the underwoods; if intense, it destroys these resinous trees.

Active pyrophytes

Some trees and shrubs such as the eucalypts of Australia actually encourage the spread of fires by producing inflammable oils, and are dependent on their resistance to fire which keeps other species of tree from invading their habitat.

Pyrophile plants

Other plants which need fire for their reproduction are called pyrophile.

The passage of fire, by increasing temperature and releasing smoke, is necessary to raise seeds dormancy of pyrophile plants such as Cistus

Cistus

Cistus is a genus of flowering plants in the rockrose family Cistaceae, containing about 20 species . They are perennial shrubs found on dry or rocky soils throughout the Mediterranean region, from Morocco and Portugal through to the Middle East, and also on the Canary Islands...

and Byblis

Byblis

In Greek mythology, Byblis or Bublis was a daughter of Miletus. Her mother was either Tragasia, Cyanee, daughter of the river-god Meander, or Eidothea, daughter of King Eurytus of Caria. She fell in love with Caunus, her twin brother....

an Australian passive carnivorous plant.

Imperata cylindrica is a plant of Papouasia-New Guinea. Even green, it ignites easily and causes fires on the hills.