[Q] Berkeley, M. J., "On the Fructification of Lycoperdon, Phallus, &c.," in "Ann. Nat. Hist." 1840, vol. iv. p. 158, pl. 5. Berkeley, M. J., "Introduction Crypt. Bot." p. 346. [R] Tulasne, L. R. and C., "Fungi Hypogæi." Paris. Berkeley and Broome, "British Hypogæous Fungi," in "Ann. Nat. Hist." 1846, xviii. p. 74. Corda, "Icones Fungorum," vol. vi. pl. vii. viii. [S] Tulasne, "Sur le Genre _Secotium_," in "Ann. des Sci. Nat." (1845), 3^me sér. vol. iv. p. 169, plate 9. [T] Tulasne, L. R. and C., "De la Fructification des _Scleroderma_ comparée a celle des _Lycoperdon_ et des _Borista_," in "Ann. des Sci. Nat." 1842, xvii. p. 5. Tulasne, L. R. and C., "Sur les Genres Polysaccum et Geaster," in "Ann. des Sci. Nat." 1842, xviii. p. 129, pl. 5 and 6. [U] Berkeley, "On the Fructification of Lycoperdon, &c.," in "Annals of Natural History" (1840), iv. p. 155. [V] Wigand, "Morphologie des Genres Trichia et Arcyria," in "Ann. des Sci. Nat." 4^me sér. xvi. p. 223. [W] Currey, "On Spiral Threads of Trichia," in "Quart. Journ. Micr. Science" (1855), iii. p. 17. [X] In some of the genera, as, for instance, in _Badhamia_, _Enerthenema_, and _Reticularia_, the spores are produced within delicate cells or cysts, which are afterwards absorbed. [Y] Tulasne, "Essai d'une Monographie des Nidulariées," in "Ann. des Sci. Nat." (1844), i. 41 and 64. [Z] Berkeley, M. J., "Introduction, Crypt. Bot." p. 330. [a] Berkeley, M. J., "Introduction, Crypt. Bot." p. 329. [b] In the _Cæomacei_ and _Pucciniæi_ the term "pseudospore" would be much more accurate. [c] Léveillé, "Sur la Disposition Méthodique des Urédinées," in "Ann. des Sci. Nat." (1847), vol. viii. p. 369. [d] De Bary, "Champignons Parasites," in "Ann. des Sci. Nat." 4^me sér. vol. xx. [e] Tulasne, "Mémoire sur les Urédinées, &c.," in "Ann. des Sci. Nat." (1854), vol. ii. p. 78. [f] De Bary, "Ueber die Brandpilze," Berlin, 1853. [g] Currey, in "Quart. Journ. Micr. Sci." (1857), vol. v. p. 119, pl. 8, fig 13. [h] Cooke, "On Podisoma," in "Journal of Quekett Microscopical Club," vol. ii. p. 255. [i] Tulasne, "Mémoire sur les Ustilaginées," in "Ann. des Sci. Nat." (1847), vii. pp. 12 and 73. [j] Corda, "Icones Fungorum," vol. iii. fig. 45. [k] Cooke, "On Podisoma," in "Quekett Journal," vol. ii. p. 255. [l] It may be a question whether _Graphiola_ is not more nearly allied to _Trichocoma_ (Jungh Fl. Crypt. Javæ, p. 10, f. 7) than to the genera with which it is usually associated.--M. J. B. [m] Cooke, "On Microscopic Moulds," in "Quekett Journal," vol. ii. plate 7. [n] _See_ "Dendryphium Fumosum," in "Quekett Journal," vol. ii. plate 8; or, "Corda Prachtflora," plate 22.