## 2 Results and Discussions
### The Most Important Species According to FC  
Species most commonly cited (height FC) by THs for treatments are listed in descending order: _Origanum compactum_ [PERSON] (26 citations), _Matricaria chamonilla_ L. (25 citations), _Salvia officinalis_ L. (21 citations), _Peganum harmala_ L. (20 citations), _Lavandula dentata_ L. (17 citations), _Berberis hispanica_ [PERSON]. & [PERSON]. (17 citations), _Rosmarinus officinalis_ L. (16 citations) (Table 3).  
These plants are used excessively which poses a threat to long-term existence especially to those that are rare and endemic. In addition, all these species are commonly reported in the literature as being the most important medicinal plants and the most used species by people in different regions of Morocco. Thus, conserving these species in their habitats and protecting the public from their toxicity, must be central to the decision makers interest.  
These plants are widely used in the literature and are even well-studied in laboratories (Table 3). Taking the following examples:  
The folk species of _Origanum compactum_ Benth., has the most cultural significance according to the FC. _O. compactum_ Benth., is an endemic plant of Morocco, aromatic, used for cooking, and occupies the first order according to FC. It contains a toxic essence and at high dose, it causes gastric bleeding, albuminuria, and steatosis of the liver [20].  
It is reported to treat 12 diseases by THs in the region of Eastern Morocco: gastrointestinal problems, cold problems, kidney disease, reproductive system problems, warming, nutritional problems, high cholesterol, circulation problems, dermatological problems, diabetes, intoxication, pathology of the respiratory system, nervous system problems and to various categories of diseases in other regions of Morocco: nutrition problems [26], allergies [44,45], circulation [40], dermal problems [26,46], diabetes [25,47,48], gastrointestinal problems [40,44,49], cold problems [10,38,46], infections [17], urinary problems [40,46,50], dental problems [38], 2011, problems with reproduction [51], respiratory problems [28,38,40,52], rheumat, and bones problems [28,40,46,53].  
_Matricaria chamonilla_ L. is the second most culturally significant species according to the frequency cited. It is reported to treat nine diseases. It grows on farmland and uncultivated land as well as in fields, and gardens. It is widely used in Morocco to treat various categories of diseases: nutritional problems [36,54], allergies [26]; cardiac problems [55,56], dermatological problems [36,46,57], diabetes [47,49,58], gastrointestinal problems [36,46], colds [44], hypertension [56], infection [26], dental problems [59], pathologies of the renal system [55], pathologies of the reproductive system [10,54,55]; respiratory problems [10,38,60]; rheumat and bone problems [10,54,60], nervous system problems [36,38,46], spasmodic [36,38,57], head diseases [59,61].  
_Peganum harmala_ L. occupies the fourth according to FC. It is used for 11 diseases in Eastern Morocco to THs. It grows in the slopes, uncultivated fields, rubble, plains, and low mountains. The plant is reported to be toxic by THs but is not toxic at low doses [20]. Among the 12 THs that inventoried it as a medicinal plant, only two remedies are administered orally, which reassures us about its toxicity. It is widely used in different regions of Morocco to treat various diseases: nutrition problems [8,36], cancer [38,62,63], heart problems [8,56], circulation problems [8,64]; dental problems [8], dermatological problems [8,9,26], diabetes [38,47,48], digestion problems [8,38,57], fever [23,37,64], colds [23,37,38], hypertension [8,56,65], infection [8,10,64], intoxication [10,38,49,57], magic [10,54,57], eye disease [8], kidney problems [8,50], pathologies of the reproductive system [10,40,64], respiratory problems [8,40], rheumat [44,64,66], nervous system problems [10,40,67], spasmodic [10,38,64], head disease [23,68].