Eugenia sinaloae Standley, Contr. U.S. Natl. Herb.

Uc Gala, Victor C., Valdemarin, Karinne Sampaio, Lucas, Eve, Negrão, Raquel & Mazine, Fiorella F., 2023, Eugenia (Myrtaceae) from Mexico: checklist, distribution, and conservation assessments, Phytotaxa 583 (2), pp. 99-140 : 124

67. * Eugenia sinaloae Standley, Contr. U.S. Natl. Herb. 23: 1042 (1924)

EOO: 505.429 km ². AOO: 12 km ². Evaluation of IUCN: Endangered.

Eugenia sinaloae has a restricted distribution, occurring only in the state of Sinaloa, from 0 to 300 m elev. The estimated extent of occurrence (EOO) and area of occupancy (AOO) fall between the thresholds of Critically Endangered and Endangered categories under the criterion B. There are between two to three known locations based on three records for the state, with one collection from municipality of Mazatlán and two from Cosala municipality. The biome of occurrence of the species is the Seasonally Dry Tropical Forest. The habitat is fragmented by the development of cities and agricultural frontier expansion, from which is inferred a continuing decline of habitat quality based on the high rate of ecological degradation, in the case of Mazatlán. In Cosala, forests have a lower rate of degradation due to the protected area “Mineral de Nuestra Señora de la Candelaria”, which has a territorial extension of 1,256 hectares including mainly the species’ habitat, Dry Tropical Forest ( CONABIO 2018). The major threats for this species are urban growth deforestation for agricultural production, as well as tourism projects. Therefore, Eugenia sinaloae is classified here as Endangered (EN) as it meets the criteria B1ab(iii)+B2ab(iii). It is worth mentioning that there are few botanical studies and floristic inventories in the region, but this is an area of high interest for further studies due to the physiographic and climatic variation that estimates a biological richness of c. 3500 vascular plants ( Vega et al. 1989, Hernández & Vega 1989, Rzedowski 1991, 1991b, Vega et al. 2000, Villaseñor & Ortiz 2014, Villaseñor 2016).

Specimen examined:— MEXICO. Sinaloa: Guizar 3379 ( MEXU!).