[59] H. Davies, Welsh Botanology, p. 63.
[60] In turnips and swedes the swelled part is, as in the radish, the lower part of the stem, below the cotyledons, with a more or less persistent part of the root. (See Turpin. Ann. Sc. Natur., ser. 1, vol. xxi.) In the Kohl-rabi (Brassica oleracea caulo-rapa) it is the stem.
[61] This classification has been the subject of a paper by Augustin Pyramus de Candolle, Transactions of the Horticultural Society, vol. v.
[62] Fries, Summa Veget. Scand., i. p. 29.
[63] Ledebour, Fl. Ross., i. p. 216.
[64] Boissier, Flora Orientalis; Sir J. Hooker, Flora of British India; Thunberg, Flora Japonica; Franchet and Savatier, Enumeratio Plantarum Japonicarum.
[65] Piddington, Index.
[66] Kæmpfer, Amœn., p. 822.
[67] Davies, Welsh Botanology, p. 65.
[68] Moritzi, Dict. MS., compiled from published floras.