SCIRPUS Sp. 



A small nut from Brunssum belongs to another species of Scirpus. It is obovate 

 lanceolate triquetrous, but is too much broken for further determination or for photo* 

 graphy. The surface sculpture consists of irregular elongate*hexagonal cells, becoming 

 more elongate towards the base. 



CLADIUM MARISCUS R. Br. 

 PI. II, Fig. 35. 

 Fruit with part of glume in size and shape corresponding with C. Mariscus, and 

 showing the very broad base of that species. Utricle shining smooth above crumpled 

 at the base, surface with small irregular striae and minute rugosities. 



Length 3 mm., breadth 1.8 mm. Reuver. 



The fossil only differs from our recent specimens of C. Mariscus (fig. 36) in the 

 sculpture of the utricle, which is much more finely striate. 



DULICHIUM. 

 The genus Dulichium, now exclusively American, was formerly well represented 

 in Europe, where it may have taken the place now occupied by riverside forms of Cavex 

 and Scirpus. Three welbmarked species are found in the Reuverian ; and of these one, 

 though as a different variety, occurs in the Teglian ; no species has yet been discovered 

 in the Cromerian, though sedges were then so abundant, but the genus reappears in 

 interglacial deposits. In addition to the three species described below, there are several 

 forms which we have treated as varities'of one or other of the named species, though 

 ultimately they may have to be given specific rank. 



DULICHIUM SPATHACEUM Rich. 

 PI. Ill, figs. 1-4. 



Fruits agreeing closely with this species in size, shape, and surface sculpture are 

 abundant at Reuver (fig. 3) and Swalmen (fig.4). They only differ from the recent sped* 

 mens (fig. 1, 2) in our collection in having a rather shorter stalk. The difference is so 

 slight that we cannot do otherwise than refer them to the same species. 



Length (without style, 3.7 mm., breadth 1 mm. Reuver, Swalmen. 



The plant has now a considerable range in North America; but is only known 

 on that continent. As a European fossil it was first discovered by Dr. N. Hartz * in an 

 interglacial deposit in Denmark, and later Dr. J. Stoller-J- recorded it from strata, 

 probably of the same date, at Lauenberg an der Elbe ; but it has not yet been discovered 

 in the Teglian or Cromerian deposits. 



* Dulichium spathaceum Pers., en nordamerikansk Cyperace i danske interglacial Moser. Meddeleber 

 fra Dansk Geol. For en. No. 10. 



f Cber das fossile Vorkommen der Gattung Dulichium in Europa.Jahrfc. d. Kbnigl. Preuss. Landes* 

 anstalt fur 1909, Bd. XXX, Teil I, Heft 1. 



65 



