Crisp, M.D. (14 October 1982), Daviesia spiralis and D. debilior (Leguminosae: Papilionoideae), two new species occurring in the Wongan Hills, Western Australia. Nuytsia 4(1): 14-15, Figs. 2j-l, 3 (map) [tax. nov.]

• Type: "9 km from Wongan Hills town along road to Piawaning, 30°49′S, 116°39′E, 17 July 1980, M.D.Crisp 6518, fl., fr., spirit material, photos (holo: CBG; iso: AD, K, L, MEL, NSW, PERTH)."

• Etymology: "The subspecific epithet refers to the tendency of the branchlets to undulate, and is derived from the Latin verb sinuo, meaning bend, curve or wind."

Hopper, S.D., van Leeuwen, S.J., Brown, A.P. & Patrick, S.J. (1990), Western Australia's Endangered Flora: 110, 134 [secondary reference]

Crisp, M.D. (22 December 1995), Contributions toward a revision of Daviesia (Fabaceae: Mirbelieae). III. A synopsis of the genus. Australian Systematic Botany 8(6): 1185 APC [secondary reference]

• APC Dist.: WA

Crisp, M.D., Cayzer, L., Chandler, G.R. & Cook, L.G. (2017), A monograph of Daviesia (Mirbelieae, Faboideae, Fabaceae). Phytotaxa 300(1): 198-199, Fig. 87J-L [secondary reference]

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