FOSSIL FLORA. 49 



PLATE XVI. 



" Short-jointed Calamite." 



{Calamifes approximatus, Sternberg. 

 , Brongniart, Hist. Veg. Foss. tab. 24.) 



This species of Calamite is characterized by the shortness and number of the joints ; these are 

 intercepted by distinct articulations, and have small compressed tubercles, forming a studded row- 

 round the trunk. The articulations are about one-fifth the diameter of the stem apart. The 

 tubercular studs, or warts, are probably the cicatrices of fallen leaves ; they rise directly from the 

 articulations, and not from the lower termination of the striae, as in the species figured in 

 the next plate. 



The specimen was found imbedded horizontally in soft sandstone, at the bottom of the rock in 

 Hober Quarry, near Wentworth. 



Fig. 1, represents a portion of the upper part of the trunk, of the natural size, terminating at 

 the top in a sharp compressed point. 



Fig. 2. An outline on a reduced scale, to show the proportionate size of the stem. 



