[107] Hooker’s ‘Bot. Misc.,’ vol. i. p. 99; Gallesio, ‘Teoria della Riproduzione,’ p. 110. Dr. J. de Cordemoy, in ‘Transact. of the R. Soc. of Mauritius’ (new series), vol. vi. 1873, pp. 60-67, gives a large number of cases of plants which never seed, including several species indigenous in Mauritius.

[108] ‘Transact. Linn. Soc.,’ vol. xvii. p. 563.

[109] Godron, ‘De l’Espèce,’ tom. ii. p. 106; Herbert on Crocus, in ‘Journal of Hort. Soc.,’ vol. i., 1846, p. 254: Dr. Wight, from what he has seen in India, believes in this view; ‘Madras Journal of Lit. and Science,’ vol. iv., 1836, p. 61.

[110] Wahlenberg specifies eight species in this state on the Lapland Alps: see Appendix to Linnæus’ ‘Tour in Lapland,’ translated by Sir J. E. Smith, vol. ii. pp. 274-280.

[111] ‘Travels in North America,’ Eng. translat., vol. iii. p. 175.

[112] With respect to the ivy and Acorus, see Dr. Broomfield in the ‘Phytologist,’ vol. iii. p. 376. Also Lindley and Vaucher on the Acorus, and see Caspary as below.

[113] ‘Annal. des Sc. Nat.,’ 3rd series, Zool., tom. iv. p. 280. Prof. Decaisne refers also to analogous cases with mosses and lichens near Paris.

[114] Mr. Tuckermann, in Silliman’s ‘American Journal of Science,’ vol. xlv. p. 1.

[115] Sir J. E. Smith, ‘English Flora,’ vol. i. p. 339.

[116] G. Planchon, ‘Flora de Montpellier,’ 1864, p. 20.