Standley : Some Echjxocerei of New Mexico 



83 





rose-purple, the filaments white, sometimes rose-colored near their 

 junction with the anthers. 



The number of stigmas is ordinarily eight, nine, or ten. Some- 

 times it is as low as four or five, while again it may reach thirteen. 

 The color of the stigmas is usually a dull yellowish-green, but in 

 some plants it is a bright chlorophyl-green. Sometimes the 

 stigmas are long and slender ; stigmas of this kind are usually 

 yellowish-green ; when they are short, they are thick and stout 

 and the color is more likely to be bright-green. 



17* 



IG - *• Plant of Echinocenm polyacanthus. About one-third natural size. This 



plant i 



s not quite so spiny as the typical form of the species. 



In the beds composed of these three species several plants 

 * ere n °ticed, which on account of the color of their spines, num- 



er and arrangement of the spines in the areola, and shape and size 

 ° f flow ers, were quite different from any one of the three species 



•bussed here. They seemed rather to belong to some other 

 j> r oup of Echinocerei although on closer study they were found to 



e a s closely related to this group as to any other. After careful 

 lamination these plants seemed to be worthy of description as a 

 " ew s P e cies and a description is added here. There also follows 



