Agrarian Academic Journal
doi: 10.32406/v8n3/2025/78-92/agrariacad
Medicinal plant diversity and uses in the region of Tamalous (Northeast of Algeria). Diversidade e usos de plantas medicinais na região de Tamalous (Nordeste da Argélia).
Abdelouahab Belaidi
1*, Francisco Maria Vázquez Pardo
2, Francisco Márquez-García
3
1*- Department of Agronomic Sciences, Faculty of Sciences, University of Skikda, Skikda, Algeria. E-mail: a.belaidi@univ-skikda.dz
2- Agrarian Plant Biodiversity Area, Institute of Agricultural Research Finca La Orden-Valdesequera (CICYTEX), Ctra. A-5, Km 372, 06187 Guadajira, Badajoz, Spain. E-mail: frvazquez50@hotmail.com
3- HSS Herbarium, Department of Forest Production and Biodiversity, Institute of Agricultural Research Finca La Orden-Valdesequera (CICYTEX), Ctra. A-5, Km 372, 06187 Guadajira, Badajoz, Spain. E-mail: fmarquez@agriculturadeconservacion.org
Abstract
In order to inventory the medicinal flora and preserve the phytotherapeutic knowledge of the region of Tamalous, this study was undertaken on the basis of a sample made up of 300 users of medicinal plants where the majority of them are women, aged between 40 and 60 years old, married, illiterate and unemployed. The analysis of the questionnaires allowed the census of 101 species divided into 46 families and the most cited plants are: Myrtus communis L., Pistacia lentiscus L., Dittrichia viscosa (L.) Greuter, Angelica officinalis L., Lavandula stoechas L., Thymus vulgaris L. and Carlina gummifera (L.) Less. The results obtained have shown that the most used part of the plant is the leaf (43%). In addition, the decoction is the most used preparation method (46%), gastrointestinal disorders represent the most treated diseases by listed plants (28%). Finally, the calculation of some ethnobotanical parameters allowed us to observe the wide use of Angelica officinalis L. (UV = 1.02) to treat different diseases, the specificity of Carlina gummifera (L.) Less. Against dermatological disorders (FL = 100%), and thus the consensus of users with respect to the treatment of gastrointestinal diseases (ICF = 0.98).
Keywords: Biodiversity. Medicinal flora. Ethnobotany. Phytotherapy. Traditional knowledge.
Resumo
Com o objetivo de inventariar a flora medicinal e preservar o conhecimento fitoterápico da região de Tamalous, este estudo foi realizado com base em uma amostra composta por 300 usuários de plantas medicinais, sendo a maioria mulheres, com idade entre 40 e 60 anos, casadas, analfabetas e desempregadas. A análise dos questionários permitiu o censo de 101 espécies, divididas em 46 famílias, e as plantas mais citadas são: Myrtus communis L., Pistacia lentiscus L., Dittrichia viscosa (L.) Greuter, Angelica officinalis L., Lavandula stoechas L., Thymus vulgaris L. e Carlina gummifera (L.) Less. Os resultados obtidos mostraram que a parte mais utilizada da planta é a folha (43%). Além disso, a decocção é o método de preparo mais utilizado (46%), e os distúrbios gastrointestinais representam as doenças mais tratadas pelas plantas listadas (28%). Por fim, o cálculo de alguns parâmetros etnobotânicos permitiu observar a ampla utilização de Angelica officinalis L. (UV = 1,02) para o tratamento de diferentes doenças, a especificidade de Carlina gummifera (L.) Less. contra distúrbios dermatológicos (FL = 100%) e, portanto, o consenso dos usuários quanto ao tratamento de doenças gastrointestinais (ICF = 0,98).
Palavras-chave: Biodiversidade. Flora medicinal. Etnobotânica. Fitoterapia. Conhecimento tradicional.
Introduction
The Mediterranean region is renowned for its exceptional biological diversity, with an estimated 25,000 species of vascular plants, which account for 9.2% of the world’s flora, despite covering only 1.5% of the Earth’s surface (MÉDAIL; QUÉZEL, 1997; MÉDAIL, 2008). It ranks as the third most biodiverse hotspot globally in terms of plant species (MITTERMEIER et al., 2005).
Algeria, home to more than 3,139 plant species (QUÉZEL; SANTA, 1962-1963), boasts one of the richest floras in North Africa (MIARA et al., 2018). Among this diverse flora, a significant number of species are used for medicinal purposes.
In Algeria, the use of medicinal plants is deeply rooted in popular culture, and continues to play a key role in community health (BOUDJELAL et al., 2013; MIARA et al., 2019), as evidenced by various studies recently published in the country (HAMMICHE; MAIZA, 2015; OUELBANI et al., 2016; BOUREDJA et al., 2017; BENDIF et al., 2018; SOUILAH et al., 2018; MIARA et al., 2019; BELAIDI et al., 2021).
However, they remain rare in certain areas, such as the Tamalous region (wilaya of Skikda), a rural and agricultural area, located in the northeast of the country and characterized by a warm and rainy Mediterranean climate that allows for the appearance of abundant and diverse flora.
Despite this rich floristics, this study represents the first ethnobotanical study initiative carried out in the region, which aims to identify medicinal plants used in traditional medicine by the local population and to gather information relating to traditional herbal medicine in the region.
Materials and methods
Study area
The Tamalous region is located in eastern Algeria (Table 1, Figure 1), 50 km from the capital of Skikda (36° 50′ 10″ N, 6° 38′ 30″ E), it extends over an area of 368.09 km² and has 80,936 habitants. It is a region with a rural character and an agricultural vocation.
Table 1 – Distribution of surveys by locality.
Localities |
Geographic coordinates |
Bioclimatic stage |
Number of investigation |
Ain Cheraia |
36° 85′ 46″ N, 6° 72′ 35″ E |
Mild sub-humid |
60 |
Ahmed Salem |
36° 87′ 54″ N, 6° 61′ 09″ E |
Mild sub-humid |
60 |
Ain Tabia |
36° 80′ 21″ N, 6° 61′ 81″ E |
Mild sub-humid |
60 |
Bin Elouiden |
36° 80′ 97″ N, 6° 56′ 33″ E |
Mild sub-humid |
60 |
Bouyaghil |
36° 84′ 86″ N, 6° 58′ 10″ E |
Mild sub-humid |
60 |
Total |
300 |
||

Figure 1 – Location of the region of Tamalous and sites studied.
Measured parameters
Use Value (UV): The relative importance of each plant species known locally for use as an herbal remedy is called as UV. It was calculated according to the following formula (BARNERT; MESSMANN, 2008):
UV = ƩU / n
Where:
U: number of use-reports cited by each informant for a given plant species.
n: total number of informants interviewed for a given plant.
Fidelity Level (FL): it is used to determine the most frequent plant species used to treat a particular disease category by informants in the study area. The FL is calculated according to the following formula (MARTIN, 1995):
FL= (Np/N) X 100
Where:
Np: number of use-reports cited for a given species for a category of diseases.
N: total number of use-reports cited for a given species.
Informant Consensus Factor (ICF): is used to see if there is agreement on the use plant in disease categories among plant users in the study area. The ICF was calculated according to the following formula (BAĞCI, 2000; CAUNCA; BALINADO, 2021):
ICF = (Nur-Nt) / (Nur -1)
Where:
Nur: refers to the number of use-reports for a particular disease category.
Nt: refers to the number of taxa for a particular disease category by all informants.
Results and discussions
Census of medicinal plants used the local population of Tamalous
The surveys conducted with these users led to the identification of 101 species of medicinal plants used as traditional remedies by the local population (Table 2, Figure 2). This number is particularly noteworthy when compared to the findings of studies from various regions in northeast of Algeria, such as: M’sila (58 species) (BOUDJELAL et al., 2013); Bourdj Bou Arreridj (83 species) (BENDIF et al., 2018); Sétif (93 species) (CHERMAT; GHARZOULI, 2015); Kabylia (98 species) (MEDDOUR; MEDDOUR-SAHAR, 2015; SILVA; SOARES, 2020). Additionally, some studies have reported even higher numbers, such as: Guerbes-Sanhadja Wetlands Complex (102 species) (BELAIDI et al., 2021) and Mascara region (141species) (BENARBA et al., 2015).
Table 2 – list of medicinal plants used by the local population of Tamalous.
N° |
Scientific name |
Familly |
Common name |
01 |
Acanthus mollis L. |
Acanthaceae |
Bear’s breeches |
02 |
Ajuga iva (L.) Schreb. |
Lamiaceae |
Ivette musky |
03 |
Allium cepa L. |
Amaryllidaceae |
Onion |
04 |
Allium sativum L. |
Amaryllidaceae |
Garlic |
05 |
Aloe vera (L.) Burm. f. |
Asphodelaceae |
Barbados aloe |
06 |
Apium graveolens L. |
Apiaceae |
Common celery |
07 |
Arbutus unedo L. |
Ericaceae |
Strawberry tree |
08 |
Artemisia absinthium L. |
Asteraceae |
Wormwood |
09 |
Arum italicum Mill. |
Araceae |
Italian arum |
10 |
Asphodelus microcarpus L. |
Xanthorrhoeaceae |
Asphodel |
11 |
Ampelodesmos mauritanicus (Poir.) T. Durand & Schinz |
Poaceae |
Diss |
12 |
Atriplex hortensis L. |
Amaranthaceae |
Mountain spinach |
13 |
Arunde donax L. |
Poaceae |
Giant reed |
14 |
Allium triquetrum L. |
Liliaceae |
Three-cornered leek |
15 |
Artemisia herba-alba Asso. |
Asteraceae |
Wormwood |
16 |
Artemisia abrotanum L. |
Fabaceae |
Southern wormwood |
17 |
Borago officinalis L. |
Boraginaceae |
Borage |
18 |
Bunium mauritanicum (Boiss. & Reut.) Batt. |
Apiaceae |
Talrouda |
19 |
Carlina gummifera L. Less. |
Asteraceae |
The distaff thistle |
20 |
Ceratonia siliqua L. |
Fabaceae |
The carob |
21 |
Cinnamomum verum J. Presl |
Lauraceae |
Cinnamon |
22 |
Cistus monspeliensis L. |
Cistaceae |
Montpellier cistus |
23 |
Cinnamomum camphora (L.) J. Presl. |
Lauraceae |
Camphor |
24 |
Chamaemelum nobile (L.) All. |
Asteraceae |
Roman chamomile |
25 |
Coriandrun sativum L. |
Apiaceae |
Coriander |
26 |
Convolvulus tricolor L. |
Convolvulaceae |
Dwarf morning-glory |
27 |
Crocus sativus L. |
Iridaceae |
Saffron crocus |
28 |
Cynodon dactylon (L.) pers. |
Poaceae |
Bermuda grass |
29 |
Cupressus sempervirens L. |
Cupressaceae |
Cypress |
30 |
Cuminum cyminum L. |
Apiaceae |
Cumin |
31 |
Cytisus triflorus Lam. |
Fabaceae |
Elongated laburnum |
32 |
Cynara scolymus L. |
Asteraceae |
Artichoke |
33 |
Daphne gnidium L. |
Thymelaceae |
Daphne were |
34 |
Dryopteris filix-mas (L.) Schott |
Dryopteridaceae |
The male fern |
35 |
Dittrichia viscosa (L.) Greuter |
Asteraceae |
Viscous inule |
36 |
Elettaria cardamomum (L.) Maton |
Zingiberaceae |
Cardamom |
37 |
Erica carnea L. |
Ericaceae |
The winter heath |
38 |
Eruca sativa Mill. |
Brassicaceae |
Rocket |
39 |
Echium vulgare L. |
Boraginaceae |
Viper’s bugloss |
40 |
Eucalyptus globulus Labill. |
Myrtaceae |
Australian fever |
41 |
Euphorbia helioscopia L. |
Euphorbiacaea |
Sun spurge |
42 |
Ficus carica L. |
Moraceae |
Fig |
43 |
Fraxinus angustifolia Vahl |
Oleaceae |
Narrow-leafed ash |
44 |
Foeniculum vulgare Mill. |
Apiaceae |
Sweet fennel |
45 |
Hordeum vulgare L. |
Poaceae |
Barley |
46 |
Heliotropium bacciferum forssk. |
Boraginaceae |
Rough heliotrope |
47 |
Hyoscyamus albus L. |
Solanaceae |
White henbane |
48 |
Glycyrrhiza glabra L. |
Fabaceae |
Licorice |
49 |
Juglans regia L. |
Juglandaceae |
The common walnut |
50 |
Lavandula stoechas L. |
Lamiaceae |
Lavender |
51 |
Laurus nobilis L. |
Lauraceae |
Bay laurel |
52 |
Lepidium sativum L. |
Brassicaceae |
Cress |
53 |
Linum usitatissimum L. |
Linaceae |
Flax |
54 |
Malva sylvestris L. |
Malvaceae |
Common mallow |
55 |
Mentha viridis L. |
Lamiaceae |
Green mint |
56 |
Mentha pulegium L. |
Lamiaceae |
Mint |
57 |
Morus alba L. |
Moraceae |
White mulberry |
58 |
Myrtus communis L. |
Myrtaceae |
Myrtle |
59 |
Marrubium vulgare L. |
Lamiaceae |
White horehound |
60 |
Nerium oleander L. |
Apocynaceae |
Oleander |
61 |
Nigella damascena L. |
Ranunculaceae |
Love-in-a-Mist |
62 |
Nigella sativa L. |
Ranunculaceae |
Black caraway |
63 |
Ocimum basilicum L. |
Lamiaceae |
Basil |
64 |
Olea europaea L. |
Oleaceae |
Olive tree |
65 |
Olea europaea (L). var. sylvestris (Mill.) Lehr |
Oleaceae |
Oleaster |
66 |
Opuntia ficus-indica (L.) Mill. |
Cactaceae |
Prickly pear |
67 |
Origanum majorana L. |
Lamiaceae |
Marjoram |
68 |
Oxalis pes-caprae L. |
Oxalidaceae |
Sourgrass |
69 |
Papaver rhoeas L. |
Papaveraceae |
Common poppy |
70 |
Petroselinum crispum (Mill.) Fuss. |
Apiaceae |
Parsley |
71 |
Phillyrea media L. |
Oleaceae |
Mock privet |
72 |
Pistacia lentiscus L. |
Anacardiaceae |
Mastic |
73 |
Populus alba L. |
Salicaceae |
White poplar |
74 |
Punica granatum L. |
Lythraceae |
Pomegranate |
75 |
Parietaria officinalis L. |
Urticaceae |
Upright pellitory |
76 |
Pimpinella anisum L. |
Apiaceae |
Anise |
77 |
Peganum harmala L. |
Zygophyllaceae |
Wild rue |
78 |
Pulicaria odora (L.) Rchb. |
Asteraceae |
Mediterranean fleabane |
79 |
Quercus suber L. |
Fagaceae |
Cork oak |
80 |
Rhamnus alaternus L. |
Rhamnaceae |
Buckthorn |
81 |
Rosmarinus officinalis L. |
Lamiaceae |
Rosemary |
82 |
Rubus ulmifolius J. Presl & C. Presl |
Rosaceae |
Bramble |
83 |
Ruta chalepensis L. |
Rutaceae |
Commun rue |
84 |
Ricinus communis L. |
Euphorbiaceae |
The castor bean |
85 |
Salvia officinalis L. |
Lamiaceae |
Sage |
86 |
Salvia hispanica L. |
Lamiaceae |
Chia |
87 |
Scilla maritima L. |
Liliaceae |
Squill |
88 |
Senna alexandrina Mill. |
Fabaceae |
Alexandrian senna |
89 |
Sesamum indicum L. |
Pedaliaceae |
Sesame |
90 |
Syzygium aromaticum (L.) Merr. & L. M. Perry |
Myrtaceae |
Cloves |
91 |
Teucrium polium L. |
Lamiaceae |
Felty germander |
92 |
Thapsia garganica L. |
Apiaceae |
The deadly carrots |
93 |
Thymus Algeriensis Boiss. et Reut. |
Lamiaceae |
Wild thyme |
94 |
Thymus vulgaris L. |
Lamiaceae |
Garden thyme |
95 |
Traganum nudatum Delile |
Amaranthaceae |
Domrane |
96 |
Trigonella foenum-graecum L. |
Fabaceae |
Fenugreek |
97 |
Urtica membranacea L. |
Urticaceae |
Common nettle |
98 |
Vitis vinifera L. |
Vitaceae |
Grape-vine |
99 |
Aloysia citriodora Palau |
Verbenaceae |
Lemon verbena |
100 |
Zingiber officinale Roscoe |
Zingiberaceae |
Ginger |
101 |
Ziziphus lotus (L.) Lam. |
Rhamnaceae |
Sedra |

Figure 2 – Some plant species identified: (a) Cytisus triflorus Lam., (b) Urtica membranacea L., (c) Dittrichia viscosa (L.) Greuter, (d) Lavandula stoechas L., (e) Myrtus communis L., (f) Traganum nudatum Delile.
Distribution of medicinal plants according to botanical families
Regarding the distribution of plants by botanical family, we observed a notable number of families (46) (Figure 3), with Lamiaceae being the most dominant (13 species), followed by Apiaceae (08), Asteraceae (07) and Fabaceae (06). The remaining families contained between 1 and 4 species. This dominance aligns with findings from previous studies in Algeria (BOUDJELAL et al., 2013; CHERMAT; GHARZOULI, 2015; SOUILAH et al., 2018), as well as international research (BENKHNIGUE et al., 2010; EL ALAMI et al., 2016; SBAI-JOUILIL et al., 2017; CHAACHOUAY et al., 2019). This trend may be attributed to the high abundance of phenolic and flavonoid compounds in these families.
Analysis of the socio-demographic profile of informants
According to Bouredja et al. (2017), knowledge of the properties and use of medicinal plants are usually acquired through a scientific and experimental knowledge accumulated and passed from one generation to another (Table 3, Figure 4).
The results obtained show that women use plants more than men with a rate of 71%, this is due to the fact that they are responsible for taking care of their children and also using these plants for cosmetic purposes. The results indicate that individuals across different age groups use medicinal plants at varying rates, with those aged between 40 and 60 years representing the largest group, accounting for 46% of users. While young people under the age of 20 are not interested in herbal medicine, this may endanger herbal medicine and makes us fear for its future in the next generations, as young people today are not very dependent on this method of treatment and prefer modern medicine. These findings align with those of Miara et al. (2018), Souilah et al. (2018) and Belaidi et al. (2021).

Figure 3 – Distribution of medicinal species according to botanical family.
Anyinam et al. (1995) mention that knowledge of the properties and uses of medicinal plants are generally acquired with age and with long experience passed from one generation to the next. The transmission of this knowledge is in danger today because it is not always assured.
In the study region, the majority of herbal users are married with a percentage of (69%), compared to (20%) for single people. This predominance is confirmed in Algeria by Bouredja et al. (2017) and Belaidi et al. (2021), and in Morocco by Chaachouay et al. (2019). This can be explained by the growing responsibilities of married couples towards their children and thus in order to minimize medical costs.
In contrast to the results of most studies in this field, the results we obtained showed that people of all educational levels tend to seek treatment with herbs, with a slight preference for illiterate people, at a rate of 31%.
In our study, and in order to minimize the burdens generated by conventional medicine, more than half of the users (51%) are unemployed.
As regards the origin of the information, the majority of users have acquired phytotherapeutic information from the family or personal experience with rates respectively of 47 and 43%, while the other sources of information (reading books, internet, and herbalist) are less cited. This reflects the image of the transmission of therapeutic practices from one generation to another and indicates the dependence of users on their families regarding the phytotherapy. Observation like that of Belaidi et al. (2021) in the Guerbes-Sanhadja wetland complex.
Table 3 – Classification of informants according to several factors.
Factor |
Categories |
% |
Gender |
Men |
29 |
Women |
71 |
|
Age |
[20-40[ |
29 |
[40–60[ |
46 |
|
≥ 60 |
25 |
|
Family situation |
Married |
69 |
Single |
20 |
|
Divorced / widowed |
11 |
|
Study level |
Illiterate |
31 |
Primary level |
10 |
|
Middle level |
13 |
|
Secondary level |
25 |
|
University level |
21 |
|
Function |
Unemployed |
52 |
Private |
14 |
|
Official |
19 |
|
Farmer |
10 |
|
Retired |
05 |
|
Origin of the information |
Family member |
47 |
Reading (books/internet) |
05 |
|
Herbalist |
05 |
|
Personal experience |
43 |

Figure 4 – ACM of the socio-demographic profile of informants.
Parts of plants used
In general, the parts of plants used in traditional medicine are the leaves, the underground part (roots, bulbs and tubers), the aerial part, the fruits, the seeds, the flowers, the stem and the bark. The results of this survey show that the leaf is the part of medicinal plants the most used (43%), a similar observation in the majority of ethnobotanical studies in Algeria (BOUREDJA et al., 2017; SOUILAH et al., 2018; BELAIDI et al., 2021) and even in Morocco cited by Daoudi et al. (2015), followed by the underground part and aerial part (13%) (Figure 5).
The high frequency of leaf use can be explained by the ease and speed of the harvest (BITSINDOU, 1986) but also by the fact that they are the seat of photosynthesis and sometimes of the storage of secondary metabolites responsible for the biological properties of the plant (BIGENDAKO-POLYGENIS; LEJOLY, 1990).
From an ecological point of view, the remarkable frequency of use of the leaves compared to the root parts, flowers and seeds, in reality avoid the excessive pulling out of the plants and therefore ensure their renewal and natural regeneration.

Figure 5 – Use of medicinal plants according to their organs.
Method of preparation
In order to facilitate the administration of the active ingredients, several preparation methods are used, in our study, the decoction method is the technique most used by the local population with a high rate of around 46%, a result conformed by Miara et al. (2019) and Bouredja et al. (2017) in Algeria, and Benkhnigue et al. (2010) in Morocco.
Due to the conviction of users in the region that the decoction allows the sterilization of the plant and the extraction of the active ingredients. The second method used is the powder (37%) followed by the cataplasm (9%), and the infusion (8%) (Figure 6).

Figure 6 – Use of medicinal plants according to the method of preparation.
Diseases treated in traditional medicine
The ethnobotanical analysis revealed 9 categories of diseases treated by the inventoried plants, gastrointestinal disorders represent the most cited disease with a rate of 28%, followed by cardiovascular diseases and respiratory diseases (15%). The predominance of gastrointestinal disorders is very frequent in Algerian ethnobotanical studies with different rates: Souilah et al., 2018 (20%); Ould El Hadj et al., 2003 (26.38%); Chermat; Gharzouli, 2015 (34.41%); Belaidi et al., 2021 (31%). The same observation is also mentioned in Morocco by Daoudi et al. (2015) (38.9%) and Benkhnigue et al. (2010) (26.15%). The results obtained can be explained by the poor eating habits answered in the region characterized by the excessive use of pasta and dried legumes (Figure 7).

Figure 7 – Use of medicinal plants according to treated diseases.
Analysis of calculated parameters
Use Value (UV)
According to the obtained results, the use values of the species are very close and vary from 1.02 to 1, however the highest is observed in Angelica officinalis L., with a use value of 1.02.
High UV indicate that local people are using the plant for many purposes to treat various categories of diseases (BARNERT; MESSMANN, 2008) (Table 4).
Table 4 – Use Value (UV) of the most cited medicinal plants.
Medicinal plant |
Use value |
Angelica officinalis L. |
1.02 |
Pistacia lentiscus L. |
1.01 |
Mentha viridis L. |
1.01 |
Carlina gummifera (L.) Less. |
1 |
Lavandula stoechas L |
1 |
Myrtus communis L. |
1 |
Thymus vulgaris L. |
1 |
Dittrichia viscosa (L.) Greuter |
1 |
Fidelity Level (FL)
Concerning the level of fidelity (FL), the calculations carried out clearly show that Carlina gummifera (L.) Less. possesses the highest fidelity level with a percentage of 100%, this indicates that this species is used by the local population specifically to treat a single category of disease (dermatological disorders).
Myrtus communis L. and Thymus vulgaris L. comes in second position with a percentage of 89%, which are often used to treat gastrointestinal disorders (Table 5).
Table 5 – Fidelity Level (FL) of the most cited medicinal plants.
N° |
Medicinal plants |
Fidelity level (%) |
Most frequent therapeutic use |
01 |
Carlina gummifera (L.) Less. |
100 |
Dermatological disorders |
02 |
Myrtus communis L. |
89 |
Gastro-intestinal disorders |
03 |
Thymus vulgaris L. |
89 |
Gastro-intestinal disorders |
04 |
Lavandula stoechas L |
70 |
Gastro-intestinal disorders |
05 |
Dittrichia viscosa (L.) Greuter |
64 |
Dermatological disorders |
06 |
Angelica officinalis L. |
64 |
Gastro-intestinal disorders |
07 |
Pistacia lentiscus L. |
34 |
Dermatological disorders |
08 |
Mentha viridis L. |
30 |
Gastro-intestinal disorders |
Informant Consensus Factor (ICF)
The higher value of the ICF indicates that the local population agrees with the use of the species in the treatment of a category of disease. This value, resulting in a well-defined selection criterion in the area studied or in information, is transmitted between the local populations. The lower ICF value indicates that the plants are chosen at random or that the local population does not exchange information about their use (KAYA, 2006).
The highest value of the ICF recorded for gastrointestinal disorders (0.98) indicates that users of herbal remedies are agreed on the treatment of this disease, and the most frequently used species is Myrtus communis L., dermatology comes in second place with a value of 0.96, and Carlina gummifera (L.) Less. represents the most used species for this category of diseases (Table 6).
Table 6 – Informant Consensus Factor (ICF) for different disease categories.
N° |
Medicinal plants |
ICF |
01 |
Gastro-intestinal disorders |
0,98 |
02 |
Dermatological disorders |
0,96 |
03 |
Cardiovascular diseases |
0,95 |
04 |
Analgesics and sedatives diseases |
0,92 |
05 |
Respiratory diseases |
0,91 |
06 |
Urinary diseases |
0,75 |
07 |
Genital diseases |
0,63 |
Conclusion
Despite the specific richness of the region, this study represents the first initiative in terms of ethnobotanical study in the Tamalous region aimed at the census of medicinal plants and the preservation of its phytotherapeutic practices. It highlights the significant reliance of the Tamalous region’s population on traditional herbal medicine, with 101 medicinal species documented across 46 botanical families, predominantly Lamiaceae.
Key species such as Myrtus communis L., Pistacia lentiscus L., and Angelica officinalis L. were frequently used, primarily in the form of leaf-based decoctions (46%) to treat gastrointestinal disorders (28%), followed by cardiovascular and respiratory ailments.
Analysis of ethnobotanical parameters reveals that Angelica officinalis L. has the highest use value (UV=1.02), demonstrating its versatile use. Carlina gummifera (L.) Less. shows maximum use fidelity (FL=100%) for dermatological disorders. The high consensus (ICF=0.98) on plants treating gastrointestinal conditions, including Myrtus communis L. and Thymus vulgaris L., reflects well-established traditional knowledge. These results demonstrate both the specialization of certain plants and the effective transmission of local therapeutic knowledge.
This dependence of local population on medicinal plants to treat various diseases despite the development of modern medicine this tcan be set up a database for the valuation and conservation of medicinal plants in order to discover new active ingredients that can be used in pharmacology and to protect this wealth.
Conflicts of interest
The authors declare no conflicts of interest regarding the work presented here.
Acknowledgements
I am very grateful to the director of CICYTEX Mrs. Carmen González Ramos for agreeing to welcome me at the institute for two months, and to all the team of Dr. Francisco Vazquez; Francisco Garcia and David Garcia Alonso. Also, many thanks to my students: Titam Khadidja and Zeggari Asma for their effective cooperation.
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Received on December 31, 2024
Returned for adjustments on June 4, 2025
Received with adjustments on June 10, 2025
Accepted on June 16, 2025