172 FLORA OF LOWER COAL MEASURES OF MISSOURI. 



their application, unless we include all forms of small ramose roots in the 

 same genus. 



It is possible that liJiuolithes, used by Braun/ Unger,^ and Lesque- 

 reux,' might be available for this type of rootlets, though, while there is no 

 doubt as to the generic identity in Lesquereux's plant, the application of the 

 name jJi'oposed b}^ Braun is at present equivocal, while Unger's figure of 

 the specimen from the Dyas leaves us still in uncertainty. 



The name Badicites is proposed by Potonie explicitly for this type of 

 roots, and, for the present at least, answers well the purpose. 



Radicites oapillacea (L. and H.) Pot. 



1834. Pinnularia capillacea Liudley aud Hutton, Fossil Flora, vol. ii, pi. cxi. 



1858. Pinnularia capillacea L. and H., Lesquereux, iu Rogers: Geol. Penusylvania, 



vol. ii, p. 878, pi. xvii, tig. 22. 

 1869. Pinnularia capillacea L. aud H., vou Roehl, Foss. Fl. Steiukohl. Westphaleus, 



p. 27, pi. i, fig. 7&; pi. ii, fig. 5a; pi. iv, figs. 1, 11. 

 1874. Pinnularia^ capillacea L. aud H., O. Feistmautel, Steink. Perm. Abl. u.-w. Prag., 



p. 72 (pi. i, fig. 2?). 

 1874. Pinnularia capillacea L. and H., O. Feistmantel, Verst. bohiu. KoMen-Abl., vol. i, 



p. 137, pi. xix, figs. 8 ^7?). 

 1877. Pinnularia capillacea L. and H., Leboiir, Illustrations, pis. lix (Ix?). 

 1889. Pinnularia capillacea L. and H., Lesley, Diet. Foss. Pennsylvania, vol. ii, p. 647, 



text fig. 

 1840. Fucoides filiformis Steiuinger, Geogu. Beschr. Land zw. Saar u. Rheine, p. 36, 



fig.l. ' 

 1893. Badicites capillacea (L. aud H.) Potonie, PI. Rothl. Thiiriugen, p. 261, ul. xxxiv, 



fig. 2. 



There appears to be some lack of agreement as to what shall be 

 meluded under the specific name in this group. Many authors seem dis- 

 posed to construe the species named by Lindley and Hutton in a broad 

 sense, considering it as inseparable from Hydatica cohimnaris Artis. Pinnu- 

 laria columnaris (Artis) Zeiller seems to be much more robust than Badicites 

 capillacea (L. and H.) Pot., with striated divisions more densely provided 

 with rootlets. .1 follow the example of Kidston and Potonid in restricting 

 the species to the type of Pinmdaria capillacea L. and H. 



Locality. — Pitcher's coal bank, U. S. Nat. Mus., 5585. 



' Flora, 1847, vol. i, p. 86. 



- Ueber zwei dyadische Pflanzen, N. Jahrb. f. Miu., 1863, p. 528, pi. vii. 



•' Rept. Geol. Surv. Arkausas, vol. ii, 1862, p. 313, pi. v, fig. 9. 



