1 :')(5 MESOZOIC FLORAS OF UNITED STATES. 



lS3y. CheiJaiifhitcs ileiitlviilatus V. A. Jvocnier [non (Broiigii.) Gopp.]: Vprst. d. 



Norddeiitsch. Oolithen-Gebirges, Xaclitrag, p. 9, pi. xvii, fi<^. la. 

 1S43. Confervites fssus Dunk.: P]\)iriaiii d. liolicrcn Gowcrlyscliulf in Ca.s.si'l, 1843- 



1S44, p. 5. 

 1846. Conferritfs ibfius Dunk.: Moiiugr. d. Xorddculsch. Wealdenbilduiig, p. 1, j)l. i, 



lig. 1. 

 1846. Sphcnoptens Romeri Dunk.: Op. fit., p. 3, pi. i, figs. 3, 4, 4a, 5. 

 1846. Sphenopteris tfjura Dunk.: Op. oil., \). 3, pi. viii, fig. 5. 

 1865. Microlepia ManteJli (Bronga.) Etl. : Farnkniuter dor Jctztwelt, p. 216. 

 1SG7. Sphenopteris antipoduin Tate: Quart, .lourii. Gi-ol. Soc. London, Vol. XXIII, 



p. 146, pi. vi, fig. 3. 

 1S8S. Aspkliuni 0(rsff'di Heor. Lesciuercux : Proc. U. S. Nat. Mu.s., Vol. XI, p. 32 



in part, <|uoad Cat. U. S. Nat. Mus., No. 2434, Lesquereux's Nos. 913-915." 

 1894. Onychiopsis Mantelli (Brongn.) Sew.: AVcalden Floia, Pt. I, p. 41, figs. 4, 5 



on p. 50, fig. 6 on j). 52, pi. ii, fig. 1; pi. iii, figs. 1-4. 



Four specimens of ;i fern with very slender incisions are found in 

 the collections of Woolfe and Duniars. Three of them are in Mr. Woolfe's 

 collection. These were identified by Professor Lesquereux with Aspidinm 

 Oerstedi Heer. Lesquereux must have given this collection a ^•ery hasty 

 examination, for this plant has not the slightest resemljlance to .1. 

 Oerstedi. The three specimens collected by Mr. Woolfe appear 1o belong 

 to the upper part of the compound pinna or frond. One of tliem is given 

 in PL XXXIX, Fig. 5. Fig. 6 represents a magnified ultimate pinna of 

 the same in which the pinnules are reduced to loljes. The fossil collected 

 by Mr. Dumars apparently belongs to a lower portion than these. This 

 is given in PI. XXXIX, Fig. 3, and Fig. 4 represents, magnified, a portion 

 in which the lobes have l)ecome pinnules. This form is a fragment of a 

 compound pinna, or of the frond, which toward its termination passes 

 into the form given in Fig. 5. These specimens show that the plant has 

 the following character: 



The ultimate pinnjc make an acute angle with tlie penultimate 

 rachis, which is apparently winged l)y a decurrence of the lowest pinnules. 

 They are narrowly oblong and have linear, almost threadlike, acute 

 pinnules, which are set on very obliquely and united at l)ase, so as to 

 make the rachis of the ultimate pinna winged. The.y diminish in size 



« Unfortuniitely nil tlic specimens referred by Professor Ijesquereux to the same speeies were given the .same 

 number in the eatalofjiie of the United States National .Museum, and as Professor Fontaine refers the speci- 

 mens to different speeies tliere would l)e no way of indi<'atinf; his determinations had not Les(|uereux altaelied 

 to each imprint a private number of his own. I am therefore obliged to (juote his private numl>ers in addition 

 to the Mu.seum number. — L. F. \V. 



