[482] Zeiller (88) A. Pl. LXXXV.
[483] Brongniart (28) A. p. 63.
[484] Brongniart (39) A.; (49) A. p. 55.
[485] Williamson (83).
[486] Williamson (72) p. 228.
[487] Renault (79).
[488] Goldenberg (55) p. 24.
[489] Schimper (70) A. p. 105.
[490] Zeiller (84).
[491] Zeiller (88) A.