[NP]. Kunth, Enumeratio Plantarum.
[NQ]. Ernest Dieffenbach, Travels in New Zealand, 1843, vol. i. p. 419.
[NR]. Joseph Hooker, Flora Antarctica, pp. 73–75.
[NS]. Sir John Herschel, Results of Astron. Observ. at the Cape of Good Hope, 1847, p. 381.
[NT]. Abhandl. der Akad. der Wiss. zu Berlin aus dem J. 1846, s. 322.
[NU]. See my work, Ueber die gereizte Muskel-und Nervenfaser, bd. ii. s. 142–145.
[NV]. Humboldt, De distributione geographica Plantarum, pp. 225–233.
[NW]. Semanario de Santa Fé de Bogotá, 1809, No. 21, p. 163.
[NX]. Wallich, Plantæ asiaticæ, vol. iii. tab. 211.
[NY]. General remarks on the Botany of Terra Australis, p. 45.