PLATE XIII. 

 Sphbnoi^teris Broadhbadi D. W. 



(Page 41.) 



Fi(i. 1. Fragment from near the apex of a fertile piuiia. U. S. Kat. Mus., 5620. 



la. Enlarged iletail of portion of the same to show the frnit dots (sori) on the ends of the lobes; 



the sori, which are not well represented, appear to be referable to Hijmenollieca. x'2. 

 2. Largeraegnientlowerinthe frond of thesauiespecies; also fertile. U. S.Nat. Mus., 5619. 

 2a. One of the lateral pinna; enlarged to show the lobation and the position of the fruit. x2. 



Sphenopteeis Van Ingbni D. W. 



■(Page 47.) 



Fk;. 3. Penultimate and ultimate piuu;e. The very delicate, membranaceous quality of the lamina is 

 imperfectly indicated. Fragments of Aloiopfcris JVinslorii D. W. are seen at tlie top. 

 U.S.Nat. Mus., 5616. 

 3a. Enlarged detail from the former. x2. 



Sphenopteeis mixta Schimp. 



(Page 35.) 



Fig. 4. Portions of several gracelul, curving, secondary (?) pinna?. U. S. Nat. Mus., 5713. 

 4a. Enlarged detail from same showing slightly crenulate lobes or pinnules. X2. 

 5. Fragment of lateral pinna- with pinnules or lobes connate to an unusual dearee.- U. S. Nat. 



Mus., 5692. 

 5o. Enlarged detail from the same specimens. x2. 



336 



