32 EQUISETITES. 



V. 2367. PL I. Figs. 5 and 6. 



This specimen shows very clearly the nature of the tuber and 

 the dentate leaf. A delicate branched root occurs immediately 

 below the node to which the tuber is attached. At the apex 

 of the tuber the pointed teeth of the leaf-sheath are easily seen. 

 Cf. Schenk, Pala3ontographica, vol. xix. p. 206, pi. xxii. fig. 5a ; 

 also Duval-Jouve, Hist. Nat. Equisetum, pi. i. fig. 5. 



The fragment at the upper corner of the same piece of rock, 

 represented in Fig. 6, shows part of another tuber, also three 

 delicate linear acuminate teeth ; the stem is traversed by two 

 distinct grooves. 



Fig. 5 suggests the natural position of growth of the under- 

 ground axis with its tuberous branch and branched root. 

 Bexhill. Rufford Coll. 



V. 1070. Slender and imperfectly preserved stem, 23'5 cm. long. 

 Several casts of tubers. Cf. Schenk, PalaBontographica, vol. xix. 

 pi. xxii. fig. 1. 



V. 1070 and V. 10700. A short piece of stem with three tubers, 

 and another piece with four. 



V. 1070J. Fragments of stems and several tubers. Two tubers 

 shown in contact. Near Hastings. 



Presented ly P. Rufford, Esq., 1885. 



V. 2256. Three tubers, broadly oval in shape ; the surface and 

 the clay casts covered with a thin black film. Bexhill. 



Rufford Coll. 



V. 2730. Fragments of stems showing longitudinal ridges. 



V. 2730J. Narrow curved stem 20 cm. long ; long internodes, 

 2-3*5 cm. in length. On the same specimen occur several globular 

 and elliptical tubers, about 1*5 cm. in length. Bexhill. 



Rufford Coll. 



V. 2739. This specimen shows the basal end of a tuber with a 

 central depression. Bexhill. Rufford Coll. 



V. 2834. Several tubers of smaller size, but similar in form to 

 the larger examples of this species. Cf. Dunker, Wealdenbildung, 

 pi. ii. fig. 10. Bexhill. Rufford Coll. 



V. 2818 and V. 2819. Fragment of the same species. Bexhill. 



Rufford Coll. 



