| Summary: | <i>Hoya longlingensis</i> (E.F. Huang) and <i>H. sichuanensis</i> E.F. Huang are two new species of Apocynaceae from Southwestern China that are described in this study. Morphologically, the two species resemble <i>H. tamdaoensis</i> Rodda & T.B. Tran and <i>H. lyi</i> H. Lév., respectively. However, <i>H. longlingensis</i> differs from <i>H. tamdaoensis</i> by its elliptic leaves, mid-vein of leaf blades raised adaxially and depressed abaxially, lateral veins 2–4-paired, corolla yellow-green, outer angles of corona convex and spreading outside obviously. While <i>H. sichuanensis</i> differs from <i>H. lyi</i> by its obovate leaves, leaf apex rounded and base cuneate, petioles 1–3.5 cm long and ca. 3 mm in diameter, calyx lobes triangular, and corona whitish.
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