Abstract

The study was carried out on the flora of Shaqh Region in AL- Dhala District, Yemen. during the floristic survey to different parts of the study region and at different intervals of the seasons of the year (July 2011– September 2012).One hundred and eighty plant species were collected. They belong to 133 genera and 61 family.
The most dominant Plant families in the study region are:
Asteraceae 10 genera and 15 species, Acanthaceae 9 genera and11 species, Asclepiadaceae 9 genera and11 species, Poaceae 8 genera and 11 species, Euphorbiaceae 5 genera and 10 species, Fabaceae 4 gener and 8 species, Solanaceae 5 genera and 7 species, Amaranthaceae 6 genera and 6 species, Boraginaceae 4 genera and 7 species, Lamiaceae 4 genera and 6 species.
The most dominant genera from the point of view of the number of plant species in the study region are :
Euphorbia(6), Indigofera (5), Ficus (5), Acacia(3), Pulicaria(3), Hibiscus(30), Commelina (3), Solanum(3).
The floristic composition of the study region is rich with endemic species and semi endemic. An endemic species was one whereas the semi endemic includes 12 plant species.
There are varions forms of plant : the herbs represented high numbers of species ,then shrubs , trees, succulents, under shrubs, pteridophytes, and parasites respectively.