52 BULLETIN- OF THE" 



midrib, representing, in shape at least, the figure of that species in Saporta, 

 Sezanne Fl., Plate XI. fig. 2. The sandstone is coarse and hard, and no trace 

 of areolation is distinguishable. 1 specimen. 



79. Cissus parrotecefolia, Lx. 6 specimens. 



80. Cissus I'jbato-crenatUf Lx. 1 specimen. 



81. Cissus corylifolia, sp. nov. Leaves thickish, ovate, blunt at apex, simply 

 or doubly short dentate, strongly pinnately nerved ; lateral nerves at an acute 

 angle of divergence, close, parallel, scarcely curved in passing to the borders, 

 the lowest much branched on the under side, the upper ones branching near 

 their ends, craspedodrome ; nervilles at right angles to the nerves, simple or 

 branched in the middle, deeply impressed. 



The leaves, finely preserved, vajy iu length from 6 to 9j cm. and from 4 to 

 74 cm. in width, being broadest a little below the middle. They have a degree 

 of likeness to Parrotia pristina, Ett., as figured in Fl. v. Bilin., Plate XXXIX. 

 lig. 23. 3 specimens. 



82. Cissus duplicafo-serrata, .'sp. nov. Leaves of various size, subcoriaceous, 

 ovate, taper-pointed, roundetl at base, palmately three, more generaDy five 

 nerved; primary lateral nerves diverging from the midrib at acute angles, 

 scarcely curving or not at all, entering the teeth which are prolonged into short 

 lobes at a distance below the apexes, mnch branched outside ; borders doubly 

 irregularly dentate, the teeth pointed; all the nerves and their divisions dis- 

 tinctly craspedodrome. 



The leaves are referable to Cissus, though they have a degree of affinity with 

 some varieties of Populus Xebrascensis. They differ essentially by the primary 

 lateral nerves not incurved, much branched, all the divisions, craspedodrome, 

 the teeth acute, the substance of the leaves thick. 7 specimens. 



83. Cissus specfabilis, Heer. Fl. Schakal., p. 45, Plate III. fig. 3 b. Leaves 

 oblong-ovate, subcordate-emarginate at base, unequally dentate on the borders, 

 very entire at and toward the base ; lateral nerves branching. 



The above description is that of Heer, which fully agrees with the characters 

 of the leaf which I refer to the species. The leaf is merely smaller; the teeth 

 though unequal are not distinct, but mere crenulations, the same as seen in the 

 figure of Heer. 1 specimen. 



84. Viiis, species undeterminable. 1 specimen. 



Hamam-elideEe. 



85. Parrotia fagifolia. Ett. Leaf broadly oval, irregularly undulate on the 

 borders; lateral nerves simple, alternate, distant, oblique, running straight to 

 the borders as in a leaf of Fagus, which it resembles. The leaf has the charac- 

 ters of the species, as figured in Fl. v Bilin., Plate XL. fig. 24, and i^ positively 

 identified. 1 specimen. 



Corneae. 



86. Comus Studeri, Heer. 2 specimens. 



