Indonesia is recognized for its rich plant biodiversity and traditional medicinal knowledge. However, ethnobotanical documentation of plants used for fertility-related purposes remains limited in some local communities. This study aimed to identify and document medicinal plants traditionally used to support fertility by communities in Blitar, Indonesia. A descriptive ethnobotanical survey was conducted using qualitative data collection and quantitative analysis. Data were collected through field observations, semi-structured interviews, and photographic documentation across six subdistricts of Blitar Regency and City. Twelve key informants, comprising traditional birth attendants and herbal medicine practitioners (jamu makers) were recruited using snowball sampling. Qualitative data were analyzed descriptively, while quantitative data were analyzed using the Family Use Value (FUV) to assess the relative importance of plant families in traditional fertility practices. The findings documented 28 plant species belonging to 17 families. Zingiberaceae, Annonaceae, and Rutaceae were the most frequently represented families. Leaves (35.8%) and rhizomes (28.5%) were the most commonly used plant parts. Annonaceae exhibited the highest FUV (4.00), followed by Rutaceae (2.00) and Zingiberaceae (1.38), despite the latter's greater species richness. These findings highlight the continued practice of traditional fertility-related plant use in Blitar and provide baseline information for further phytochemical and pharmacological investigations.
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