CONTENTS. XI 



Page. 

 The Plant Life of Ellis, Great, Little, and Long Lakes in North Caro- 

 lina. By William H. Brown 323 



Introduction. 323 



Lake Ellis 324 



Physical characters 324 



Zones of vegetation 325 



Marginal zone 327 



Intermediate zone 328 



Central zone 329 



T Comparison of zones 329 



Islands and trees 331 



Banks of the lake 331 



Algal flora 332 



Great Lake - 332 



Physical characters 332 



Aquatic vegetation _ 333 



Flora of the banks 334 



Algal flora 334 



Little Lake 335 



Long Lake 335 



Theoretical discussion 336 



Zonation 336 



Production of phytoplankton " 337 



Summary 339 



Literature cited 340 



/ List of plants collected by W. II. Brown in North Carolina 340 



A Revision of the Subgenus Cyclobothra of the Genus Calochortus, 



By Joseph H. Painter 343 



A Revision of the Cichoriaceous Genera Krigia, Cynthia, and Adopogon. 



By Paul 0. Standley 351 



New or Noteworthy Plants from the Eastern United States. By 



Edward S. Steele 359 



Two New Shrubs from Lower California. By Paul C Standley and E. A. 



Goldman 375 



The Allioniaceae of Mexico and Central America. By Paul 0. Standley. 377 



Introduction 377 



Systematic treatment 379 



New or Noteworthy Plants from Colombia and Central America, — No. 3. 



By Henry Pittier 431 



Moraceae 431 



The American genera of Artocarpoideae-Ol mediae 431 



Pseudoimedia 432 



Olmedia 433 



Perebea 436 



Naucleopsis 439 



Noyera 441 



Macquira, a genus without a status 442 



Rosaceae 443 



Three economic trees of Central America 443 



Sterculiaceae 447 



An old and a new species of Sterculia 447 





