from LANZAROTE with love

Lichens on a volcanic island

by M. Halit Umar

Page 7 of 7


 
 

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These three successive images clearly illustrate that such tiny cavities may contain enough water for green algae and can give rise to an associative life form; the lichens which are shown below.

Note the cup-shaped forms and leaf-like surfaces. The former may be called asci and contain fungi generally named ascomycetes.

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Note the junction between the brown-black lava stone and green and leafy lichen. Do you notice the whitish mass just in between? This white tissue is a fungus and is made of thread-like structures called hyphae.

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Did you find the fibrillar white structure (hyphae) at the centre, just inside that whitish fungal tissue?
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Seen at a higher magnification

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And in close-up (about 100 times magnified)


 
 
Comments to the author Comments to the author sent via our contacts page quoting page url plus : ('mhumar','')">M. Halit Umar are welcomed.
All images presented in this article are © M. Halit Umar.

 


Some interesting Internet Links chosen for you from a large collection of sites:

An introductory account about Lanzarote or Canary Islands can be found in the Encyclopaedia Britannica.

Parque Nacional de Timanfaya or The National Park of Timanfaya

A good start for an almost complete presentation of César Manrique


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