[1252] Velenovský (85) Pl. II.
[1253] Fontaine, in Ward (05) Pl. LXV. Newberry’s Chiropteris spatulata from Montana may be founded on leaflets of Sagenopteris Mantelli. Newberry (91).
[1254] Brongniart (28) A. p. 61.
[1255] White (93).
[1256] White (99) p. 143.
[1257] Schimper (69) A. p. 610.
[1258] Sellards (01).
[1259] Weiss, C. E. (69) p. 98, Pl. VI. fig. 13.
[1260] Zeiller (94) p. 169.
[1261] Renault (96) A. p. 1.