1862.] HEEE — HEMPSTEAD PLANTS. 375 



of them. The rhizomes are from 10 to 14 millims. thick, and at the 

 knots 23 to 24 millims. ; they represent brilliant brown or brownish 

 black bands. The large, thickened knots are provided with long and 

 thin fibres, which bear finer fibrils. The fibres have fallen away in 

 places, and scars appear, which are numerous and densely crowded. 

 Fig. 19 d represents the lower end of the rhizome ; fig. 19 c, a knot 

 in the middle of it. These beautifully preserved rhizomes enable 

 us to explain some enigmatical portions which were formerly sent to 

 me from Eochette and Giinzburg. In my ' Plora Tertiaria ' I have 

 represented in pi. xxi. fig. 13 a some fibres ranged in a circle, which 

 at aU events belong to Nelumhium. Ehizomes have been found at 

 Giinzburg, which are as large as those of Hempstead. I took them 

 formerly for Cyperites duhius, A. Br. At Eochette and Giinzburg 

 there appear with the roots, at the same place, the leaves of Nelum- 

 hium Buchii, which confirms their belonging to the same species. 



The Typha-like leaves mentioned by Prof, E. Forbes (op. cit, p. 44) 

 are probably the rhizomes of our plant. 



7. Cabpolithes "Websteei, Brongniart. 



Carpolithes tlidlictroides, var., A. Brongn., Memoires du Museum, 



vol. viii. pi. 14. fig. 6. 

 Folliadites Kaltennordheimensls, Zenker et Auct. 

 Folliculites minutulus, J. D. Hooker, Quart. Journ. Geol, Soc, 



1855, vol. xi. p. 567. 



Abundant at two feet below the " White Band." It wholly 

 agrees with the specimens from Bovey,Kaltennordheim, theWetterau, 

 Eochette, and elsewhere. 



8. Carpolithes globulus, sp. nov, PI. XYIII. figs. 14, 15, 16. 



Globose fruits (or seeds ?), 4 to 5 miUim. in diameter, smooth 

 somewhat depressed at both ends. 



In the upper three feet of the " third division " of Porbes. 



They have a rather thick, coal-black rind, which easily peels o 

 from the pyritized nucleus (fig. 16 6; magnified, fig. 16c). Thus 

 we have golden-yellow grains, surrounded by a black rind. This 

 gold-coloured nucleus has at one end a small round aperture, or 

 circular place (fig. 14) ; the other end has an impression (fig. 15). 



It is perhaps the fruit of a Palm. 



Var. h. Natural size, figs. 17, 18 ; magnified, figs. 17 &, 18 h. 



Besides these globose, smooth fruits, there are at Hempstead, at 

 the same place, short oval fruits (or seeds ?), which are densely and 

 finely dotted. They are 6 millims. long, and 5 millims. broad. They 

 have also a golden-yellow nucleus of pyrites, and a rather thick 

 black rind. These fruits belong perhaps to another plant. 



9. Chaea Escheet, A. Brongn. 



Heer, Flora Tert. Helvet. vol. i. p. 25, pi. iv. fig. 5. 



From the upper three feet of the *' third division" of Prof. E. 

 Forbes. 



I cannot distinguish these from the species which I described and 



