214 M. YOKOYAMA; MESOZOIC PLANTS 



hcawuj more clonijatal pinnules than tltose on the front puuudes linear 

 to elliptical, acute at apex, directed more or less fonrards and close together ; 

 veins fine, few, indistinct, an evanescent midvein sendiwj off a feiv simple 

 lateral veins. 



This slender and elegant fern is, I believe, to be brouglit under 

 Dicksonia, and indeed close to D. acutiloha Heer (Yokoyama, Jurassic 

 Plants, p. 24, PI. I. figs. 2, 2«, 1^, from Avhicli however it is dis- 

 tinguislied in having shorter ultimate pinna;, which on the back 

 of the sec(jndary rachis are more acutely directed forward than on the 

 Iront. The ])inna3 with the linear pinnules look also not unlike those 

 ol ünijc]iinj).sis cloiujata Geyl. Veins are in most cases not dislinctlv 

 visible, in one or two cases however they were observed, and then 

 arranged as in fig. loa. 



hoc. — Tôgodani near Uyôseki. Onl}^ a single specimen. 



3. Dicksoniopteris Naumann! Nath. 

 PI. XXV, Fig. 4. 



THcksonuqileris XaiDinnuii. — Nathorst, Beitr. zur lucsoz. Flora Japans, ]). 11, 

 pi. V, tig. 4. 



AYhat Xathorst descnl)ed from Ilaginotani under the above name 

 was found also at tw(3 other loc:üities cited below. The fern is rather 

 slender, with distant, (opposite piniicC rising at an angle of G()-(i5° 

 from a straight main (?) rachis. Pinnules are elongated, finger-like, 

 obtuse, UKjre or less crenulate and (jiiite close together, ahhough not 

 overlapping. The margins of these pinnules show on each side 4 or 5 

 round fruit-dots, most (^f which however have left only slight impres- 

 sions on the stone. Veins have been nearly obhterated, the onlv 

 thing which I can now and then observe beitjg a- very line mid\ein 

 which near the apex is indistinct. 



Loc, — Kataji and Ishiseki, near Pyoseki. Pare. 



