The Variation of Animals and Plants under Domestication

by Charles Darwin

[154] Loudon’s ‘Arboretum et Fruticetum,’ vol. iii. p. 1376.

[155] ‘Gardener’s Chronicle,’ 1841, p. 687.

[156] Godron, ‘De l’Espèce,’ tom. ii. p. 89. In Loudon’s ‘Gardener’s Mag.,’ vol. xii. 1836, p. 371, a variegated bushy ash is described and figured, as having simple leaves; it originated in Ireland.

[157] ‘Gardener’s Chronicle,’ 1863, p. 575.

[158] Quoted from Royal Irish Academy in ‘Gardener’s Chronicle,’ 1841, p. 767.

[159] Loudon’s ‘Arboretum et Fruticetum:’ for Elm, see vol. iii. p. 1376; for Oak, p. 1846.

[160] ‘Gardener’s Chronicle,’ 1849, p. 822.

[161] ‘Arboretum et Fruticetum,’ vol. iv. p. 2150.

[162] ‘Gardener’s Chronicle,’ 1852, p. 693.

[163] See ‘Beiträge zur Kenntniss Europäischer Pinus-arten von Dr. Christ: Flora, 1864.’ He shows that in the Ober-Engadin P. sylvestris and montana are connected by intermediate links.