T. Holm — Studies in the Cyperacece. 63 



dato. Stigmata terna, stylus pleruraqne intra perigynium 

 iiexuosus, caryopsis trigona vel triquetra." 



In several respects the utricle of C. JEngelmannii reminds of 

 that of C. ptdla G-ood. and its nearest allies, while we cannot 

 agree with Drejer, that such types as C. microglochin, C. 

 'paiiciflora and C. pulicaris should be looked upon as pri- 

 mordial types of this same section. C. pidicaris^ for instance, 

 differs greatly from any of these by the structure of its utricle 

 alone, and we suggest the affinity of C, microglochin and C. 

 paiiciflora rather to be sought among the Echinostachyce Drej. : 

 "perigynia vix inflata, demum plus minus squarrosa" both 

 of which characters are readily recognized in C. pauciflora 

 and its allies. As regards C, Breioeri^ this may " ad interim " 

 be retained as the only member of the Physocephalce^ and this 

 section appears to be very near the PhysocarpcB^ evidently 

 parallel with this ; but at present we are unable to refer it to 

 any of the already established sections in which higher devel- 

 oped types are represented. 



Brookland, D. C, April, 1902. 



