PEEITS— INCERT.E SEDIS— APHLEBIA. 109 



Fucoides filiciformis^ and by PvesP as lihodea Gtithieriana to the same species, 

 for the designation of which Geinitz, while including several other forms, 

 employed the name given by Presl. To the writer it seems highly improb- 

 able that all, even among the figm-es given by Giitbier, Geinitz, or Schimper 

 under these two names, really represent but a single species. Certainly the 

 differences between figs. 6 and 7 on pi. i of Gutbier's "Abdriicke," on the 

 one haiid, and fig. 14, or even fig. 13, on pi. xxv of the " Versteinerungen," on 

 the other, are very striking if not specific. Accordingly, it has seemed best 

 to treat the illustrations included under the specific designation filiciformis 

 Gutb. or G'ldhieriana Presl as belonging to a group with which I have com- 

 pared the American specimens in hand. The latter agree most closely with 

 the fig. 13 of the "Abdriicke," though not so scaly along the axis, or figs. 

 11 and 12 in the "Versteinerungen."' 



Lesquereux* recognized fig. 14 (Fucoides crenatus Gutb.) in the 

 "Abdrucke," and fig. 13 in the "Vei-steinerungen," as representatives of a 

 variety " Guthieriammi," between which and the normal Bhacophylhmi filicl- 

 forme there were no intermediate forms. Many of the specimens in the 

 Lacoe collection identified by him as the latter species or its variety Gut- 

 hierianmn are closeh', perhaps inseparably, related to others in Bliacopliyllum 

 Clarkii (Lx.) Schimp., although the latter should have the distal portions of 

 its broadly connate divisions greatly thickened and fleshy. No doubt, 

 however, the latter species has much in common with the comprehensive 

 Ehacoph-t/llum fillci forme. Specimen No. 9548 of the Lacoe collection, which 

 bears the label ^'Bhacophyllimi Gutbierianum Gein.," I am disposed to include 

 with the other examples from Hem-y Covmty. It seems less improbable 

 that the appellation was simply the temporary, perhaps inadvertent, emplo}^- 

 meut by Lesquereux of the name used by Geinitz, who is cited as the 

 authority, rather than that it resulted from the omission of the specific term, 

 the intention having been to label the specimen as the variety. 



Localities. — Hobbs's mine, U. S. Nat. Mus., 5577; Owen's mine, U. S. 

 Nat. Mus., 5578, 5580-5582; Pitcher's mine, U. S. Nat. Mus., 5579, 5580. 



'Abclrucke u. Versteinerungen d. ZwickauerSchwarzkolilengeberges, 183.5, p. 11, pi. i, figs. 3, 6, 7, 8 13. 

 -Sternberg, A'ersuch einer Flora d. Vorwelt, vol. ii, fasc. 7-8, 1838, p. 111. 

 ■' Figs. 5 and i, pi. xlviii, of the Atlas to Schimper's Traite, 

 ■'CoalFlora, vol. i,p.316. 



