IP Ibo Wh OW ILI I. 
FLorA OF THE Potomac ForRMATION. 
Fic. il, IDIGLONTANOS 1uCieawVNwIS (Biss) Bom 5 sesssesoske dn Lose sche sede bsasecdosesssscce 
Fic. 2° Droonrmes Buceranus! Agieninus (Gcpp ) Ward!_22 2222552222222 202 
Fig. 35) CEVASDROPRENY IIS MaPATZ BD O MUS MV (S)0 CL TTNES |) Sees tte et eset ae ne 
Fic, 4. GLYPTOSTROBUS BROOKENSIS ANGUSTIFOLIUS (Font.) Kn.._.........-...-.-.---.----- 
Fig, O} ARISTOLO CHIP EYEE UM i CEIEL UT ARE VValG 1st Pas ae ees aie oped eal ee as 
Fic. GRICELASTROP EY LL UME MUN DE RTM Viens eye tee rea aaa eg 
Fig. 7. CELASTROPHYLLUM ? SALICIFORME Ward nD. sp._-..-----------------------+---------- 
Fie. 8. MY RIGA BROORENSTIS HOMES Yoyo aye aa Sh a ay) Ee NC ene a ne ey 
BGs OOM WEPTOSMROBUS {7s OVALS aV\/a00 Clan O Tris AI O viper aerate ee ee 
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Fic. 11 
Fig. 10. Enlargement of Fig. 9, x 2. 
Ginkeo ? aceraria Ward n. sp 
WELORULOPHY.EEUM MINUD UM AV ecdemeys plese pe eye eel aes ae eee a 
Fig. 12. 
