Pbeu. 



798 



(Pseudopecopteris anceps, cnnfmued.) 



3. SpIu'Moptcris sqiuuno^^ l^csq .■ 



Penn. and Ohio coal fields. In Coal Flora, p. 207, pi. 88, tigs. 

 1 to 4, Lesquereux describes it as wearing many shapes (poly- 

 morphous); large leaves in Lacoe's cabinet at Pittston, Pa., 

 show these variations. Pecopteris sillimanni is closely allied^ 

 but with smooth skin, etc., etc. First seen in anthracite tun- 

 nel in Sharp Mtn, Pottsville ; also Brown colliery, Pittston, 

 Wilkes-Barre; abundant in the Oannelton (Kittanning) coal 

 roof; in Illinois low coals. XIII. Note. — Fig. 3 {squamosa) 

 was tound with Dictyopteris ohliqua^ at S. Salem vein, Potts- 

 ville. Note — Recognized by Lacoe in Koch's collections from 

 the Tipton Run coal beds in Blair Co., Pa., July, 1889. These 

 beds I assign to the Pooono formation, X, J. P. L. 



Pseudopecopteris (Sphp/ncpteris) decipiens, Lesq. GeoL 



Pa., 1858, p. 862, pi. 18, 

 fig. 2, 2a/ easily mis- 

 taken at sight for both 

 Sphenopteris latifolia^ 

 and for Alethopteris 

 nervosa ; but diff*ers 

 from both by its remark- 

 able nervation, the little 

 nerves branching not 

 from the middle but from the lowest nervule, which runs par- 

 allel to and very near to the main (median) nerve. It is 



Xisq. 



^phe/iopUris (IrnpLcns /.e<;q 



