[981] Zeiller (79).

[982] Gardner and Ettingshausen (82) p. 29, Pl. III. fig. 6.

[983] Arber (06) p. 227.

[984] Scott (06) p. 189.

[985] Zeiller (05).

[986] Kidston (06).

[987] Kidston (06) p. 429.

[988] Weiss, C. E. (69) p. 94, Pl. XI. fig. 2. The specimens figured by Weiss bear a somewhat remote resemblance to that described by Renault (96) A, under the same generic name.

[989] Kidston (91²) p. 23.

[990] Kidston (88) p. 350.

[991] Renault (96) A. p. 9; Zeiller (88) A. p. 162; Grand’Eury (77) A. Pl. VIII. fig. 13.

[992] Watson (06).

[993] Goeppert (36²) A. p. 380.

[994] Stur (85) A. p. 221, Pl. LXI.; Zeiller (88) A. p. 41.

[995] Grand’Eury (90) A. p. 288, Pl. VI. fig. 26.

[996] For an account of these genera, see Chap. XXVII.

[997] Strasburger (74).

[998] Stur (85) A. p. 183.

[999] Corda (45) A. Pl. LVII.

[1000] Kidston (91²) p. 20; Stur (85) A. Pl. LIX.

[1001] See Chap. XXVII.

[1002] Stur (85) A. p. 106.

[1003] Zenker (37).

[1004] Strasburger (74).

[1005] Kidston (91²) p. 20.

[1006] Geinitz (72). See Solms-Laubach (83), who gives in full the early history of the genus Scolecopteris.

[1007] Sterzel (78); (80).

[1008] Stur (85) p. 140.

[1009] Zeiller (99) p. 17.

[1010] Zeiller (06) p. 10.

[1011] Brongniart (28) A. Pl. CXXV. fig. 4.

[1012] Renault and Zeiller (88) A. Pl. XXIV.

[1013] page 325.

[1014] Zeiller (83) p. 184; (88) A. p. 30.

[1015] Artis (25) A.

[1016] Stur (75) A.

[1017] Kidston (96) p. 205.

[1018] Zeiller (83) p. 185.

[1019] Kidston (82).

[1020] Stur (85).

[1021] Kidston (84²).

[1022] Kidston (87).

[1023] Kidston (82) p. 32.

[1024] Kidston (84²) p. 594.

[1025] Williamson (83) A.

[1026] Kidston (06).

[1027] Heer (76) A. p. 71, Pl. XXIV. fig. 1.

[1028] Schimper (74) A. Pl. 38; see also Schenk (88) A. p. 31.

[1029] Leuthardt (04) p. 29, Pl. XIII. figs. 1, 2.

[1030] Goeppert (36²) A. Lief. I. and II. Pl. IV.

[1031] Schimper (69) A. p. 607.

[1032] Schenk (83) A. p. 260.

[1033] Zeiller (03) Pl. IX.

[1034] Fontaine, in Ward (00) Pl. LV. figs. 3–5.

[1035] Bartholin (92) Pl. IX.

[1036] Moeller (02).

[1037] Schenk (83) A.

[1038] Seward (07⁴) Pl. II. figs. 16–18.

[1039] Nathorst (08).

[1040] Krasser (09).

[1041] Feistmantel (82) Pls. IV.-X.

[1042] Seward (08) p. 95.

[1043] Krasser (00) Pl. II.

[1044] Zeiller (03) Pl. IX.

[1045] Krasser (09) p. 21.

[1046] Leuthardt (04) Pls. XIX. XX.

[1047] Zigno (56) A. Pl. XXV.

[1048] Raciborski (94) A. Pl. VI.

[1049] Heer (80).

[1050] Nathorst (08).

[1051] Bayer (99).

[1052] Gardner and Ettingshausen (82) Pl. XII. figs. 1–7.

[1053] Stenzel (54) p. 803.

[1054] Cotta (32).

[1055] Sprengel (28).

[1056] Stenzel (54) p. 753.

[1057] Parkinson (11) A.

[1058] Williamson (76).

[1059] Scott (08).

[1060] Butterworth (00).

[1061] Grand’Eury (77) A.

[1062] Grand’Eury (77) A; (90) A.

[1063] Rudolph (05).

[1064] Scott (08) p. 302.

[1065] Butterworth (00). Pelourde (08²) has recently described the structure of the roots of several species of Psaronius.

[1066] Stenzel (06).

[1067] Farmer and Hill (02).

[1068] Williamson (76) Pl. III.

[1069] Stenzel (89) Pl. VI.

[1070] Zeiller (90) p. 204, Pls. XVI. XVII.; see also Rudolph (05).

[1071] Renault and Zeiller (88) A. Pls. V.–VIII.

[1072] Solms-Laubach (04).

[1073] Arber (05) Pl. VII.

[1074] Scott (08) fig. 113; Zeiller (90) p. 246, Pl. XXI. fig. 1.

[1075] Pelourde (08²).

[1076] Stenzel (06) Pl. VI.; Goeppert (64) A.; Stenzel (06).

[1077] Zeiller (90) Pl. XXIII.

[1078] Scott (08) p. 301.

[1079] Lindley and Hutton (33) A. Pl. XLII.

[1080] Kidston (88) Pl. XXVI.

[1081] Renault and Zeiller (88) A. Pl. XXXV. fig. 6.

[1082] Kidston (86) A. p. 113.

[1083] Artis (25) A. Pl. XX.

[1084] Lesquereux (66) A.

[1085] Renault and Zeiller (88) A. Pl. XL.; Grand’Eury (90) A.

[1086] Corda (45) A.; see also Grand’Eury (90) A.; Renault and Zeiller (88) A. Pls. XXXVIII.–XL.

[1087] Fontaine and White (80) Pl. XXXVI.; Zeiller (90) Pl. XIV.

[1088] Mettenius (65); Tansley (08) p. 85.

[1089] Rudolph (05).

[1090] Scott, D. H. (08).

[1091] Shove (00).

[1092] Butterworth (00).

[1093] Farmer and Hill (02).

[1094] Grand’Eury (77) A. p. 98.

[1095] Stur (75) A. Pl. VIII.

[1096] Zeiller (00) p. 55.

[1097] Kidston (89³), Pls. I. II. For other figures of Rhacopteris see also Stur (75) A.

[1098] Renault (96) A. p. 30, Pl. LXXXII. figs. 7–9.

[1099] Stur (75) A.

[1100] Weiss, C. E. (79).

[1101] Solms-Laubach (91) A. p. 141.

[1102] O. Feistmantel (75).

[1103] C. Feistmantel (79).

[1104] C. E. Weiss (79).

[1105] Potonié (99) p. 167.

[1106] Seward (03) p. 63.

[1107] Carruthers (72²) Pl. XXVII. fig. 5; Seward (03) p. 62.

[1108] Newberry (91) Pl. XIV.

[1109] D. H. Scott (08).

[1110] P. Bertrand (09).

[1111] Scott (09²).

[1112] Williamson (83²) A, p. 478.

[1113] κοινός = Lat. communis, common or general. I am indebted to my friend Mr L. H. G. Greenwood, Fellow of Emmanuel College, for supplying me with a name to express the idea of the generalized nature of these Palaeozoic ferns.

[1114] Arber (06).

[1115] Renault (96) A. p. 46, Pls. XXX. XXXI. See also Tansley (08) fig. 2, p. 13.

[1116] Cotta (32) p. 15.

[1117] Stenzel (89) Pls. I. II.

[1118] Stopes (06).

[1119] Williamson (89) A. p. 162. The term Rachiopteris was adopted by Williamson for petrified petioles from the Coal-Measures which he believed to be filicinean.

[1120] Renault (75); (96) A. p. 47, Pl. XXXII.

[1121] Oliver (02).

[1122] Oliver (04) p. 395 (footnote).

[1123] Scott, D. H. (08).

[1124] Felix (86) A.

[1125] Williamson (78) A. p. 351.

[1126] Hick (96).

[1127] Scott (08).

[1128] Williamson (91²) A. p. 261. The two species described by Williamson as Rachiopteris hirsuta and R. ramosa were first identified as Botryopteris by Scott in 1898 (British Assoc. Report, Bristol Meeting, p. 1050).

[1129] Tansley (08) p. 15.

[1130] Kidston (08).

[1131] Oliver (02).

[1132] Corda (45) A.; see also Stenzel (89) p. 26.

[1133] P. Bertrand (09) pp. 136, 212.

[1134] Tansley (08) p. 22.

[1135] Unger and Richter (56) Pl. VI. fig. 19.

[1136] Renault (96) A. p. 11.

[1137] The Diplolabis type of strand is very similar in the form of the metaxylem to the conducting strand of a lateral vein in Scolopendrium officinarum [cf. Pelourde (09) fig. 3, p. 117].

[1138] Solms-Laubach (92).

[1139] Williamson (74) A. Pls. LIV. LV.

[1140] Gordon (09). Mr Gordon’s more complete account of this plant will shortly be published. I am indebted to him for furnishing me with the main facts in regard to the anatomical features.

[1141] Solms-Laubach (92) Pl. II. fig. 13.

[1142] Bertrand, P. (09) p. 211.

[1143] Pelourde (09).

[1144] Kidston and Gwynne-Vaughan (08) p. 230.

[1145] Ibid. (09) p. 664.

[1146] A Culm species Rachiopteris aphyllus (Unger) is closely allied to Metaclepsydropsis duplex. [See Solms-Laubach (96) p. 30.]

[1147] Unger and Richter (56) p. 165.

[1148] Corda (45) A. p. 83.

[1149] κλεψύδρα, water-clock.

[1150] P. Bertrand (09) p. 127.

[1151] Stenzel (89) p. 25.

[1152] Dr Scott points out to me that recent observations, which have not yet been published, both by Dr Kidston and himself show that Bertrand’s terminology requires modification. There are many points to be cleared up before we can hope to obtain a satisfactory classification of the Zygoptereae.

[1153] Stenzel (89) p. 31, Pls. VI. VII.

[1154] Williamson (89) A. p. 158.

[1155] Ibid.; see also Scott (08).

[1156] Scott (07) p. 180.

[1157] Renault (69); Williamson (74) A. p. 697.

[1158] Williamson (77) Pls. V.–VII.

[1159] Williamson (89) A. Pl. VIII. fig. 28.

[1160] Scott (08) p. 322.

[1161] No. 245.

[1162] Williamson (80) A. p. 507.

[1163] Scott (06).

[1164] Solms-Laubach (96).

[1165] Scott, D. H. (06) p. 519.

[1166] British Museum, section No. 245. Cf. figures by Williamson and Bertrand: Williamson (77) Pl. V. fig. 19; Bertrand, P. (09) Pl. XII. fig. 87.

[1167] Scott (07) p. 182; (08) p. 318.

[1168] Weiss, F. E. (06).

[1169] Williamson (77).

[1170] Williamson (88) A.

[1171] Jordan (03).

[1172] McNicol (08).

[1173] Gwynne-Vaughan (09).