ANGIOSPERMAE. 

 MONOCOTYLEDONEAE. 



SPARGANIACEAE. 



SPARGANIUM cf. RAMOSUM Huds. 

 PI. I, figs. 16, 17. 



A few endocarps belonging to a Sparganium allied to 5. ramosum have been found. 

 They do not satisfactorily agree with our recent fruits, but the material is insufficient 

 for the description of a new species. 



Endocarps ovate strongly angled shortly beaked. 



Length 4 mm., breadth 1.5 mm., Reuver and Swalmen. 



SPARGANIUM cf. MINIMUM Fries. 



PI. I, fig. 18. 



A single endocarp represents a species near to 5. minimum; but the material is 

 insufficient for further characterization. 



Endocarp ovate beaked smooth with neither ribs nor grooves. 



Length 3.4 mm., breadth 1.5 mm. Reuver. 



SPARGANIUM NODULIFERUM Sp. Nov. 

 PI. I, figs. 19—25. 



Fructus biconicoideus, endocarpio osseo fusiformi utrinque attenuato 

 acuto in tubercula inter fasciculos vasculares mesocarpii intruso. 



Fruit bi*conical ; endocarp bony fusiform contracted into a point above and below, 

 with rounded grooves in which lie the branching fibrous bundles of the epicarp, swelling 

 between into elongated tubercles which disappear above and below. 



Fruit with style, length 7 mm., breadth 35.; endocarp, length 5 mm., breadth 

 3.4 mm. Abundant at Reuver and Swalmen, one endocarp at Brunssum. 



This well-marked species is strikingly unlike any of our living large*fruited 

 forms of Sparganium, which have a spongy endocarp irregularly cylindrical or barrel* 

 shaped, and have the branching vascular bundles raised on sharp ridges, not sunk in 

 grooves. In 5. neglectum the endocarp is much smaller, rounded, bony, and shows the 



57 



