1 6 YORKSHIRE NATURALISTS' UNION. 



[Note. — In the record ot species in this Report, the.vakie of most species 

 depends on characters derived from the form and arrangement of its 

 various parts, whichfrom the present state of our knowledge seem to 

 indicate differences between the various individuals recorded. Future 

 investigations may show that many of the species recorded are only 

 different parts or conditions of the same plant — but for the purposes 

 of recording and comparing the species of one district with those of 

 other areas — definite names must be applied to definite forms]. 



SYNOPSIS OF SPECIES. 

 CALAMARIiE. 



CALAMI TES Suckow. 



Group I.— CALAMITINA Weiss. 



Calamitina (Calamites) varians Sternb. 



Calamites varians Sternb. Vers, ii, p. 50, pi. xii. 

 Middle Coal Measures. 



Hor. — Upper Chevet Rock. Loc — Quarry, Darfield, near 



Barnsley (Hemingway). 

 Hor. — Woolley Edge Rock. I.oc. — Barnsley, common 



(Hemingway). 

 Hor. — Barnsley Thick Coal. Loc. — Woolley Col., Darton, 



near Barnsley (Hemingway). 

 Hor. — White Rake Bed. Loc. — Low Moor, near Bradford. 



Calamitina (Calamites) gopperti Ett. 



Catamites G'dpperti Steinkf. v. Radnitz., p. 27, pi. i, figs. 3 — 4. 

 Calaniitina Gdpperti^Qi%s, Steinkohlen Calamarien I, p. 127, 



pi. xvii, figs. 1 — 2. 

 Calamites (Calamitina ) variafis abbreviatus Weiss, ibid., vol. 



ii, P- 73. Pl- ^vi 0, fig-^. 10— II. 

 Calamites {^Calamitina) variants i?iconsta?ts Weiss, ibid., vol. 



ii, pp. 62 and 69, pi. xvi a, figs. 7, 8 ; pi. xxv, fig. 2. 

 Calamophyllites Goepperti Zeiller. Flore foss. d. bassin houil. 



d. Valen. p. 363, pi. Iviii, fig. i. 



Geol. Trans. V.N.U., TS8S(pub. 1S90). 



