104 MESOZOIC FLORAS OK UMTED STATES. 



The plant occui's with an iiniiioiise number of imprints at locality 

 Xo. 7. where it stands next to the (iinkgos in miml)er. It is found also 

 at localities Xos. 1, 4, 14, and 19. 



Pterophylli'm MINI'S Broiigiiiart ? 



PI. XXI. P^ijjs. s. 1). 



1825. I'ffrophi/lluin minus Brongn.; Ann. Sci. Xat. Paris, Vol. IV, p. L'lO. pi. xii, 

 fig. S.'^ 



Several specimens of a small plant that is much like the /^/r/v)/)/(;///(//;i 

 minus figured hy Lindley and Hutton'' are foimd at locality Xo. 7. The 

 plant is somewhat smaller than the form figured in Fossil flora, hut is 

 of the same type. The leaflets are about 5 mm. long and 3 mm. wide. 

 They are closely placed, touching by their edges. They are at right 

 angles to the midrib and of equal width from l)ase to tip. The ends are 

 truncate or slightly rounded. The nerves are about 12 in number, single, 

 perpendicular to the midrib, and parallel to one another. They are slender 

 and can be seen only obscurely, even with a lens. The plant sometimes 

 approaches the wdder forms of PtcrophyUum NathorsH. It may be a 

 X^ilsonia, but a strong midrib is always shown. The amount of material 

 is too small and too poorlv preserved to permit positive identification, with 

 the plant of Lindley and Hutton. 



PI. XXI, Fig. 8 shows the specimen natural size and Fig. 9 the 

 upper part enlarged. 



"Professor Fontaine does not refer to this figure nor cite this memoir, and Mr. Seward also ignores it. 

 It is an obscure and little-known paper, but important as being the one in which the genera Pterophyllum 

 and Nilsonia were first named. The plates of tlic early volumes of the Annales are difficult to find, being in 

 quarto form and u.s\iall_v bound up in atlases that cover several volumes of the text. They are wanting in 

 munv libraries and are generally overlooked by bibliographers. The plants were from the lihetic of Hi)r in 

 Scania, but Lindley and Hutton identified a Yorkshire Oolitic form with this species, and it is their figure 

 that Professor Fontaine refers to. Lindley and Hutton give the name Pterophylhim Nilsoni to another figure 

 on the same plate, identifying it with the Aapleniopteris Nilsoni 'i figured by Phillips in his Geology of York- 

 shire, 1829, pi. viii, fig. .5, which in turn was supposed by him to be probably the plant so named by Stern- 

 berg in his Flora der Vorwelt, Vol. I (Tentainen, p. xxii, also index and index i<onuni), pi xliu. figs. 3-5, 

 but which he first (fasc. IV, 1S25, p. 40) called Asplenium Nilsonii.' Mr. .Seward, without mentioning llie.se 

 early figures of Brongniart and .Sternberg or their types, has used Sternberg's name (crediting it to Phillips) 

 and grouped a large number of forms under the combination " Anomozarnitrs A"i7.s.wmi (Phillips)." Pro- 

 fessor Fontaine, after receiving his Jurassic Flora of the Yorkshire Coast, and fully weighing the question, 

 declines to follow him in this, and prefers to retain the name Plerophyllnm miruis.—L. F. W. 



'' Fo.ss. Fl. Gt. Brit., Vol. I, pp. 191-192, pi. Ixvii, fig. 1. 



