LYCOPODIALES— LEPIDODENDRB.E— LEPIDOPHYLLUM. 217 



it is really very finely liueate, tlie longitudinal lines or rows of cells num- 

 bering about seventeen within the millimeter. In one specimen the bract is 

 shown in profile to be at a right angle to the sporangiophore. 



On one of the slabs lately sent by Dr. Britts are what appear to be 

 three cone fragments, shown in Fig. 1, PI. IjX. The largest, illustrated in 

 the upper jiart of Fig. 1, is somewhat remarkable for its size and is inter- 

 esting as showing the aspect of the imbricated bracts in situ. None of the 

 fragments show either the base or the tip of the cones, all of them repre- 

 senting segments that fail to show even the entire widtli of tlie organ. 

 From these fragments we may infer that the cones were very broad. The 

 photograph shows a strong general similarity to the fragments illustrated 

 by Goldenberg,^ Von Roehl,- or Lesquereux.^ 



As was stated in m.j remarks under this genus, I am disposed to follow 

 Goldenberg in regarding these very large Lepidophylla and their cones, 

 Lepidostrohus, as pertaining to the genus Lepidophloios. If such is the true 

 relation, Lepidophylluni (Lepidostrohus) missouriense most probably represents 

 the fructification of Lepidophloios Van Ingeni. In the most intimate asso- 

 ciation with these bracts are numerous sporangia, or Lepidocysts, most of 

 which ai-e broken and spread out in smooth black trapezoidal forms, about 

 20 to 25 mm. long, and ha^ang a width of about 12 mm. at one end and 18 

 mm. at the other end, the corners being slightly rounded and the margins 

 of the ends occasionally ruptured. Examples of these collapsed vacant or 

 displayed sporangia are seen in PI. LXI, Fig. 2, dr PI. LXII, Fig. ft, while 

 the unruptured, somewhat compressed sporangia with their macrospores are 

 illustrated in PL LXII, Figs, c and d. These sporocysts are perhaps 

 specifically indistinguishable from examples of Lepidocystis fraxiniformis 

 (Goepp.) Lx., from Canneltou, Pennsylvania. The latter are found in place 

 on the bracts of Lepidophyllum Mansfieldi Lx. It is probable, however, that 

 the spore sacs of several of the large species of Lepidophylla are not dis- 

 tinguishable by supei-ficial macroscopic characters. 



In L. missouriense the macrospores, shown enlarged in Figs. 3 and 3ff, 

 PI. LXIII, are perhaps a little over 1 mm. in diameter when uncompressed. 

 They appear minutely granular luider a strong lens. The triradiate crests, 



' Fl. Foss. Sara?.p., vol. i, pi. iii, figs. 13a, 136. 



=Foss. Fl. Steink. Westphalens, pi. xiii. figs. In, \h. 



^ Coal Flora, pi. Isviii. fig. 1 (copied from Von Roehl, op. cit., fig. la). 



