[1879] Bretschneider, On Study and Value, etc., pp. 18, 44.
[1880] Fraas, Syn. Fl. Class., p. 303; Lenz, Bot. der Alten, p. 243.
[1881] Pliny, Hist., lib. xviii. cap. 17.
[1882] Galen, De Alimentis, lib. i. cap. 12.
[1883] Heer, Pflanzen der Pfahlbauten, p. 6, fig. 24.
[1884] Lenz, Bot. der Alten, p. 245.
[1885] Ad. Pictet, Orig. Indo.-Europ., edit. 2, vol. i. p. 350.
[1886] Notes communicated by M. Clos.
[1887] Ad. Pictet, ubi supra.
[1888] Nemnich, Polyglott. Lexicon, p. 548.