Fias. 1, 3, 8. 
PATH Xavi; 
ASPIDIUM ANGUSTIPINNAT UM, ISP UOVioreeemciniatae sae e eeee eine sienna a siete 
i. Fragmentiofian ultimate pinnasessseeses soe eee ee cane eae eee 
3. Portion of a large primary pinna, or of the frond, slightly restored. ...........--. 
3°, Pinnules from the lower part of 3 magnified .-.......-.........----- e002 Sa6e0c6 
3°. Pinnules from the upper part of 3 magnified .........-.. 2.2. .2--2- 222+ cece ceeeee 
8. Portion of an ultimate pinna from hill-side near Potomac Run............-..----- 
83; Pinnuleofeimagnitied ees -mecessctanseemcenencere ces scare oe eee aeons eee 
Fig, 2. ASPIDIUM CYSTOPTEROIDES, (8p. NOV eace ene seeeeicace eossinesecsieees meee eee eenone 
2. borhionofanwltiniate pinnae css cles Sane tees ie oee ce neteee nese eee cieeeeieee 
28, Pinnule of 2 magnified, to show sori and eeparion BOSHCenp cEBSSOaaSese ceuineeeneas 
BIGS.64;\5: POLYPODTUM MADYENIOIDES, SD iMlOVet ease. eee adine see een enee eee eee eeeeee 
4. Portion of a pinnule slightly enlarged, showing the under side. ........-.-------- 
40. SA eorus: ora magnified. oo ewess cee ose ceisecce see ces oe Sammie Ooceeecae eset ete mele 
5. Portion of a pinnule of small size, not enlarged, showin the upper side.....--... 
Fig. G6), ASPLENIOPTERIS) ADIANTINOLIA, SD, MOVs) .2e<1-=-nleawiels <sstee se le sasiece ieneisee eeere 
6. Portion of frond, natural size, showing sori-...--.....-.. wiacica Saeeysotls see cease ee 
FIG. 
, An ultimate pinna enlarged; toishow sori’. 5.=---..sstscc0sss2--<'-eale---eoee esse 
Pia. we 
>: Erarment.of a pinnules..c-.s2sce- ce eee s one cece ace coos heen cece ioe cece ececenee ste 
t=} 
/ Pragment /amagoified’: 2222s co =-scee «onsets ncejae ne enuecesstoensieeee eeea ceceee 
ACROSTICHUM CRASSIFOLIUM, Sp. NOV-....-..- ---- coos ee OCOSSGHSooN moSeesossosn 
>», ASPIDIUM, FREDERIGKSBURGENSE, SP: DOVes=-+ += cicoccoslsacicoc seneisacs snes cesses 
. Fragment of an ultimate pinna with large sori -....-...-.........2.------------ 
