X CONTENTS. 



Page. 



A Bibliography op New Mexican Botany. By Paul C. Standley . . , 229 



Introduction 229 



List of "works 230 



A Preliminary Treatment op the Genus Oastilla. By Henry Pittier... 247 



Introduction 247 



Establishment of the genus 247 



History of species hitherto known 249 



General characters and their systematic value 251 



Habit 251 



Roots 251 



Trunk 252 



Two forms of branches 252 



Leaves 252 



Three forms of inflorescence 253 



Primary male inflorescence 254 



Complemental male inflorescence. 256 



Pistillate inflorescence 257 



Infructescence 258 



Preliminary survey of species' 259 



Systematic treatment 261 



Revision of generic characters 261 



Description of species 262 



The Genus Talinum in Mexico. By J. N. Rose and Paul C. Standley 281 



Two New Species op Harperella 289 



Studies op Mexican and Central American Plants — No. 7. By J. N. 

 Rose. 



Introductory notes 291 



Commelinaceae 293 



Setcreasea an older name than Neotreleasea. 293 



Crassulaceae 294 



Four new species of Echeveria and one new name 295 



Graptopetalon, a new genus 296 



Fifteen new and one restored species of Sodum 297 



New species of four genera 301 



Menispermaceae 302 



A new species of Menispermum 302 



Caesalpiniaceae 303 



New species and new binomials in Poinciana 303 



Oxalidaceae 303 



New and recently described species of Ionoxalis 303 



Polygalaceae 307 



Two new species and a new name in Polygala 307 



Malvaceae 307 



Erioxylum, a new genus 307 



Cactaceae 308 



A new species of Ariocarpus from Mexico 308 



Notes and descriptions of North American species of Opuntia 309 



Apiaceae 311 



A new Arracacia and a new Eryngium 311 



Ericaceae 312 



A new species of Arbutus 312 



The Gyrophoraceae op Calipornia. By Albert W. C. T. Herre 313 



