146 Calam. approximatus Renier — Calam. arenaceus et Mougeoti Schimper et Mougeot- 
Calamites approximatus Renier, Methodes, 1908, p. 44, Fig. 15 — zu C. walden- 
burgensis Kidston — W. J. Jongmans (2), p. 57. 
Calamites approximatus Schimper (non Bgt.), p. p., Traite, Vol. I, 1869 r 
p. 314, Taf. XIX, Fig. 1 — zu C. cruciatus Sternb. — R. Kidston (3),. 
p. 107. 
Calamites approximatus Schimper, Traite, I, 1869, p. 314, Taf. XIX, Fig. 1 — 
zu C. cruciatus quaternarius Weiss — W. J. Jongmans (2), p. 132, 133. 
Calamites approximatus Schlotheim — W. J. Jongmans (2), p. 60. 
Calamites approximatus Sternberg — Sehr zweifelhaft — W. J. Jong¬ 
mans (2), p. 60. 
Calamites approximatus Stur, Culmflora, II, p. 99, Taf. IV, Fig. 8 — zu C. 
waldenburgensis Kidston — W. J. Jongmans (2), p. 57. 
Calamites approximatus Stur, Calam. Schatzl. Sch., p.p., p. 119, Taf. VIII, Fig. 2,. 
3, XII, Fig. 7 — zu C. Schützei Stur — W. J. Jongmans (2), p. 59, 92. 
*Calamites approximatus Stur, Calam. Schatzl. Sch., Taf. V, Fig. 3 — Ver¬ 
gleich mit C. varians inversus Weiss — W. J. Jongmans (2), p. 61, 81,. 
Fig. 80. 
Calamites approximatus (Waldenburgensis) Stur, Calam. Schatzl. Sch., 1887,. 
p. 119, p. p., Taf. V, Fig. 3, VIII, Fig. 4 (an V, Fig. 2) — zu C. walden¬ 
burgensis Kidston — W. J. Jongmans (2), p. 57. 
Calamites approximatus Weiss, Steink. Calam., II, 1884, p. 81, Taf. XXV r 
Fig. 1 — zu C. waldenburgensis Kidston — W. J. Jongmans (2), p. 57. 
Calamites approximatus Bgt. var. accrescens Weiss — Wahrscheinlich zu 
C. Schützei Stur gehörig — W. J. Jongmans (2), p. 58, 59. 
Calamites approximatus Bgt. var. subaequalis Weiss — W. J. Jong¬ 
mans (2), p. 58. 
Calamites approximatus Bgt. var. vulgaris Weiss — W. J. Jongmans (2),. 
p. 58. 
Calamites approximatus mit Huttonia arborescens Feistmantel, Böhmen, 1875,. 
p. 106, 107, Taf. VI, Fig. 2 — zu C. distachyus Sternb. — W. J. Jong¬ 
mans (2), p. 191. 
Calamites arborescens Sternb. et aut. div. — zu C. distachyus Sternb. — W. J~ 
Jongmans (2), p. 191, 194. 
Calamites arenaceus Bgt., Histoird, 1829, p. 138, p. p., Taf. XXVI, Fig. 3—5 
— zu Equisetum arenaceum (Jäg.) Bronn — P. Fliehe (7), p. 124. 
Calamites arenaceus Bgt., Histoire, 1828, Taf. XXIII, Fig. 1 — zu Schizo- 
neura paradoxa S. et M. — R. D. Vernon (2), p. 402 — L. J. Wills (2), 
p. 272. 
Calamites arenaceus Ettingshausen, Haidinger Naturw. Abhandl., IV, 1851, p. 75 
— zu Equisetum Mougeoti Bgt. — P. Fliehe (7), p. 117. 
Calamites arenaceus Schimp., Monogr. PI. foss. Vosges, 1844, p. 57, Taf. XXVIII, 
Fig. 2 — zu Schizoneura paradoxa S. et M. — R. D. Vernon (2), p. 402 
— L. J. Wills (2), p. 272. 
Calamites arenaceus minor Bgt., Ann. Sc. nat., XV, 1828, p. 437—438 — zu 
Equisetum Mougeoti Bgt. — P. Fliehe (7), p. 117. 
Calamites arenaceus minor Jäger, Pflanzenverst. Buntsandstein, 1827, Taf. II, 
Fig. 5, III, Fig. 1—5 (caet. excl.) — zu Equisetum Mougeoti Bgt. — 
P. Fliehe (7), p. 117. 
Calamites arenaceus et Mougeoti Schimper et Mougeot, Monogr. PI. foss. du 
gräs bigarre, 1844, p. 57—59, Taf. XXVIII, XXIX — zu Equisetum Mougeoti 
Bgt. — P. Fliehe (7), p. 117. 
