414 Lesquereux's Descriptions of 



NEW SPECIES OF FOSSIL PLANTS, 



BY LEO LESQUEREUX. 



Genus CALAMITES. Brongt. 



1. Calamites bistriatus (spec. nov.). Stem three inches 

 broad, cylindrical; articulations about two inches distant ; ribs 

 broad, nearly plane, narrowly striate, converging at the articu- 

 lations ; tubercles very small and obsolete, inserted on the 

 articulations. 



2. Calamites disjunctus (spec. nov.). Stem cylindrical, 

 one inch broad ; articulations about two inches distant, inflated 

 and crossed by a depressed furrow ; ribs elevated, half cylin- 

 drical, exactly parallel, narrow; surface covered with small 

 elevated points ; tubercles very small, round. 



Genus ASTEKOPHYLLITES. Brongt. 



3. Asterophyllites crassicaulis (spec. nov.). Stem 

 thick, articulated ; deeply striate ; articulations half an inch 

 distant ; leaves verticillate on the joints, linear, acute, single 

 nerved ; tubercle or fruit obcordate, acute, attached to the 

 stem in the axils of the leaves. 



4. Asterophyllites ovalis (spec. nov.). Differs from the 

 former by its slender stem, slender furrows, the leaves more 

 numerous, and the tubercles oval. 



5. Asterophyllites subl^evis (spec. nov.). Stem thick, 

 nearly smooth, slightly undulate above and below the inflated 

 joints, branching at the articulations; leaves verticillate, half 

 open, shorter than the distance between the joints ; branches 

 short and thick, with very short leaves. 



6. Asterophyllites lanceolata (spec, nov.) (Wolkman- 

 nia major Gutb. ?). Differs from A. tuberculoid (Lindl.) by 

 the leaves united half their length, and terminated in a lance- 

 olate point* 



1. Asterophyllites aperta (spec. nov.). Stem scarcely 



