The description of this issue is divided in four sections. This is part 3 of 4.

The Libyan issue was released on July 15th, 1985. It is made of 16 stamps, 50 dirhams each, printed in minisheet, size mm.198x150.

   minisheet of 16 (detail)

Pholiota aurivella   -   (Batsch) (P. Kummer) Fries, 1871   -   Order Agaricales, Family Strophariaceae

Boletus edulis   -   Bulliard, 1782   -   Common names: Porcino, Cep, King Bolete, Penny Bun   -   Order Boletales, Family Boletaceae   -   Edibility: edible (excellent)

Cortinarius herculeus   -   Malençon, 1958   -   Order Agaricales, Family Cortinariaceae

Pholiota lenta   -   (Persoon) Singer, 1951   -   Order Agaricales, Family Strophariaceae

Something more about "MUSHROOMS" (source Wikipedia)

GROWTH RATES. Many species of mushrooms seemingly appear overnight growing or expanding repidly. This phenomenon is the source of several common expressions in the English language including "to mushroom" or "mushrooming" (expanding rapidly in size or scope) and "to pop up like a mushroom" (to appear enexpectedly and quickly). In actuality all species of mushrooms take several days to form primordial mushroom fruitbodies, though they do expand rapidly by the absorption of fluids.

The cultivated mushroom as well as the common field mushroom initially form a minute fruiting body, referred to as the "pin" stage because of their small size. Slightly expanded they are called "buttons", once again because of the relative size and shape. Once such stages are formed, the mushroom can rapidly pull in water from its mycelium and expand, mainly by inflating preformed cells that took several days to form in the primordia.

Similarly, there are even more ephemeral mushrooms, like Parasola plicatilis formerly Coprinus plicatlis, that literally appear overnight and may disappear by late afternoon on a hot day after rainfall. The primordia form at ground level in lawns in humid spaces under the thatch and after heavy rainfall or in dewy conditions balloon to full size in a few hours, release spores, and then collapse. They "mushroom" to full size.

Not all mushrooms expand overnight; some grow very slowly and add tissue to their fruitbodies by growing from the edges of the colony or by inserting hyphae.

   Hyphae

See other related Guides: part 1, 2 and 4.

PHILATELICUM