Xuèmài lùn 血脈論

Mid-to-late-Táng (or early-Sòng) Chán treatise constituting the sixth gate of KR6q0084 Shǎoshì liù mén; closes with the famous transmission-gatha yī huā kāi wǔ yè 一華開五葉, the canonical textual warrant for the Five Houses of Chán self-identification.