132 CALIFORNIA ACADEMY OF SCIENCES. 



LcEFLiNGiA SQUARROSA Nutt. — Calmalli. 



Pentac^na ramosissima (Weinm.) — El Kosario. 



AcHYRONYCHiA CooPERi T. & G. — Magclaleiia Island. 



PoRTULACA PARVULA Gray. Agrees with the description 

 of this species, but the shores of Magdalena and Santa 

 Margarita Islands are very different habitats from the dry 

 regions of Texas and Mexico. 



PoRTULACA OLERACEA L. — Found in many places. 



PoRTULACA RETUSA Engelm. ? Specimens too young for 

 certain determination. — Magdalena Island. 



Calandrinia maritima Nutt. — Not uncommon between 

 San Gregorio and San Quintin. 



Calandrinia caulescens HBK. var. Menziesii Gray. — 

 El Kancho Yiejo. 



FouQUiERiA splendens Engelm. The flowers have often 

 a yellow tinge. — Calmalli and northward. 



FouQuiERiA SPixosA HBK. " Palo de Adam." The leaves 

 fall in April while it is in full bloom. — Magdalena and 

 Santa Margarita Islands and northward to Lat. 28°. 



FouQUiERiA COLUMNARIS Kellogg. Idiia columnaria Kell. 

 Proc. Cal. Acad. II, 34; Hesperian, May, 1860. F, colam- 

 naris Kell. Ball. Cal. Acad. i. , 133. F. gigantea Orcutt, 

 West Am. Scientist, II, 48. First seen near San Esteban, 

 this tree was a prominent part of the vegetation nearly to 

 El Rosario. It grows erect to a height of 25 to 50 feet, 

 gradually tapering from a base two or three feet in diameter 

 to a pointed top, and as it seldom branches, the shape is 

 that of a huge inverted carrot. Sometimes from accident 

 or injury, the main trunk separates into two or more 

 straight or distorted branches and assumes curious forms. 

 An abundance of small twigs 3-4 inches long, bearing 

 leaves and spines or sometimes only fascicles of leaves, 

 grow upon the trunk. The wood is very soft, and a knife 



