Arabie Saoudite

Saudi Arabia (sa)

Shaaran Royal Nature Reserve

M. Ducousso

SH-23-SP / TN 4

2023-3-3

26° 54' 27'' N ; 38° 14' 22.992'' E

26.9075 ; 38.23972

near Helianthemum lipii in "good health" which grow on either side of primary draiange axes on fairly stony shallow soils. The sandstone cliffs, characteristics of Sharaan, limit exposure to wind and sun. The relief created by these sandstone massifs concentrates rainwater ; thus, the quantity of water received in the areas where H. lipii grow in symbiotic interaction with T. nivea is much higher than the value measured by a rian gauge