L042 DR R. KIDSTON, MR T. C. CANTRILL, AND MR E. E. L. DIXON. 



Cingularia Weiss. 



1871. Cingularia, Weiss, Foes. Flora d.jungd. Stk. u. Rothl., Heft ii, p. 137. 

 1876. „ Weiss, Steinkohlen-Calamarien, Heft i, p. 88. 



Remarks. — Up till the present, Cingularia typica Weiss was the only species 

 comprised in this remarkable genus, but a second species is described below. 



As the generic and specific characters are so intimately connected, these need not 

 be mentioned here, as they will be dealt with when treating of Cingularia typica. 



Cingularia typica Weiss. 

 PL I, figs. 1, la, 2, 2a. 



1828. cf. Equisetum infundibuliforme, Bronn, in Bischoff, Krypt. Gewdchse Deutschl., p. 52, pi. vi, fig. 4. 



1828. cf. „ „ Brongt. (pars), Hist, d. veget. foss., p. 119, pi. xii, fig. 16. 



1871. Cingularia typica, Weiss, Foss. Flora d. jiingst. Stk. u. Rothl., p. 138, pi. xiv, fig. 4. 



1873. ,, ,, Weiss, Zeitsch. d. deut. geol. Gesell., p. 263, fig. 5. 



1874. „ „ Schimper, Traite d. paleont. veget., vol. iii, p. 460, pi. cix, figs. 1-4. 



1876. „ ,, Weiss, Steinkohlen-Calamarien, Heft i, p. 99, pi. vi, figs. 5, 6; pi. vii, 



figs. 1-9; pi. viii, figs. 1-7; pi. ix, figs. 1-7. ■ 

 1874. ,, „ Stur, Verhandl. d. k. k. Reichsanst., No. 7, p. 176. 



1882. ,, ,, Weiss, Aus d. Steink., p. 11, pi. x, fig. 55 (Zweiter Abdruck). 



1882. ,, ,, Renault, Cours d. hot. foss., vol. ii, p. 144, pi. xix, figs. 9-11. 



1887. „ ,, Stur, Carb. Flora d. Schatz. Schichten : Die Calamarien, p. 218, pi. iv/>, 



figs. 2, 3. 



1888. ,, „ Toula, Die Steinkohlen, p. 206, pi. v, figs. 34-36. 

 1891. ,, ,, Solms-Laubach, Fossil Botany, p. 334, fig. 47. 



1893. ,, ,, Fischer, Naturf. Gesell, in Bern, Jahrg. 1893, p. 1, pi. i. 



1899. ,, ,, Hofmann et Ryba (pars), Leitpflanzen d. palaeoz. Steink., p. 31, pi. iii, figs. 



1-3 (non fig. 16). 



1900. ,, ,, Scott, Studies in Fossil Botany, p. 62, figs. 26, 27. 

 1900. ,, „ Zeiller, Elements de paleobot., p. 168, fig. 119. 



1907. „ ',, Zeiller, Comptes rendus, vol. cxliv, p. 1140. 



1908. ,, ,, Schuster, Geognostischen Jahreshefien 1907, xx Jahrg., p. 206, fig. 1 (1), p. 209. 



1908. ,, ,, Bower, Origin of a Land Flora, p. 377, fig. 204. 



1909. ,, ,, Lotsy, Botanische Stammesgeschichte, ii, p. 542, fig. 363. 

 1911. „ ,, Jongmans, Anleitung, p. 357, figs. 325-331. 



1911. „ „ Kidston, Mem. Musee roy. d'hist. nat. de Belgique, vol. iv, p. 128. 



1914. ,, ,, Pelourde, Paleont. vegetale, p. 44, fig. 9. 



Remarks. — The stem is calamitoid, jointed and ribbed, and the leaves, which s< em 

 to be of the Asterophyllites type, possess a distinct central vein. The cones have 

 short ribbed stalks, which are in addition striated longitudinally ; on the axis of the 

 cone, the ribs, which do not alternate at the nodes, are narrow and separated by 

 wide furrows that are distinctly and very regularly striated. 



The bract whorls are somewhat distant, and each whorl is composed of two parts, 

 an upper sterile and a lower fertile whorl. 



The upper sterile whorl consists of a broad fiat sheath formed by the complete 



