[18] Herbert, ‘Amaryllidaceæ,’ 1838, p. 369.
[19] ‘Gardener’s Chronicle,’ 1843, p. 391.
[20] Exhibited at Hort. Soc. London. Report in ‘Gardener’s Chronicle,’ 1844, p. 337.
[21] Mr. W. Bell ‘Bot. Soc. of Edinburgh,’ May, 1863.
[22] ‘Revue Horticole,’ quoted in ‘Gardener’s Chronicle,’ 1845, p. 475.
[23] ‘Bastarderzeugung,’ 1849, s. 76.
[24] ‘Journal of Horticulture,’ 1861, p. 336.
[25] W. P. Ayres, in ‘Gardener’s Chronicle,’ 1842, p. 791.
[26] W. P. Ayres, ibid.
[27] Dr. Maxwell Masters, ‘Pop. Science Review,’ July, 1872, p. 250.