CD had asked which plants, on a list that has not been found, were for his greenhouse and which for his hothouse (see letter from Emma Darwin to J. D. Hooker, 12 March [1864]); he had also asked Hooker for Smilax in an earlier letter (see letter to J. D. Hooker, 24 [February 1864] and n. 1). Although Myrsiphyllum, which is now known as Asparagus, is not mentioned in any of CD’s publications, the other three plants are discussed in ‘Climbing plants’; both Ruscus androgynus (a synonym of Semele androgyna, climbing butcher’s broom) and Asparagus are discussed in the section on spirally twining plants (see ibid., pp. 2–25, and note on R. androgynus in DAR 157.1: 21).