Xītán lún lüètú chāo 悉曇輪略圖抄
Anthology of Abbreviated Diagrams of the Siddham Wheel by 了尊 Ryōson (撰)
About the work
A ten-fascicle Siddham scholarly compendium by Ryōson 了尊 了尊 (1230–1296), a Shingon-line scholar of the Mt. Kōya lineage in the Kamakura period. The catalog title is Shittan rin ryaku-zu shō; the CANWWW catalog title is Shittan ryaku-zu shō 悉曇略圖抄 (omitting the rin 輪 “wheel” element). The work is the most comprehensive Siddham survey of the Kamakura period and the last major creative work of the classical Japanese Siddham tradition before its slow decline through the late medieval and early modern periods.
Abstract
The ten fascicles are organized as a diagrammatic-encyclopedic treatment of the Siddham corpus, with extensive use of diagrams and tables (the zu 圖 of the title) to present the doctrinal-mantric correspondences in graphic form. Major topics include: (1) the basic Siddham letter set with phonetic, graphic, and bīja apparatus; (2) the conjunct-consonant system with full graphic tables; (3) the dhāraṇī corpus with sound-by-sound morphological analysis; (4) the maṇḍala correspondences of the Siddham letters in the Two-Realm system; (5) pedagogical materials including the iroha-Siddham correspondence (following Shinkaku); (6–10) specialized topics — bonji calligraphy, ritual application, sotōba talismanic use, the Tang Chinese transcription traditions, and more.
The work is encyclopedic in the most literal sense — Ryōson aimed to provide a complete reference covering everything a Japanese Shingon monk could reasonably need to know about Siddham. It supersedes the earlier compendia (Annen, Junnyū, Myōkaku, Shinkaku) by gathering their material together and supplementing it with the late-Heian and Kamakura developments, including the comparative Chinese-phonological analysis that Myōkaku had pioneered.
Date. Composition over Ryōson’s mature career, c. 1270–1296.
Structural Division
The CANWWW entry (div25.xml, T84N2709) records the work as a 10-fascicle treatise by Ryōson with no internal toc sub-list and no related-text cross-references tabulated.
Translations and research
Critical edition: Taishō vol. 84. No English translation. Major studies: R. H. van Gulik, Siddham (1956), extensive discussion of Ryōson; Yamanaka Yukio, Nihon shittan-gaku no kenkyū (Hōzōkan, 1981); Chiba R. B. K., Shingon mikkyō shittan-gaku no kenkyū (Hyakkaen, 1984).