]28 CALIFORNIA ACADEMY OF SCIENCES. 



Thysanocarpus laciniatus Nutt. A small leaved form. — 

 El Kancho Yiejo. 



BiscuTELLA Californica Beiitli. & Hook. — Sand dunes of 

 the southern coast and in the interior. A smoother form, 

 2 feet high with small pods, grows on the ocean side of 

 Santa Margarita Island. 



Cleome arborea (Nutt.) — Calamujuet to El Kosario. 



Cleome tenuis Watson. — Comondu. 



WiSLiZENiA Palmeri Gray. — San Juauico, San Ignacio, 

 Calamujuet. The specimens from San Juanico are more 

 slender and branching than those from Calamujuet; in the 

 former, all the leaves are trifoliate; in the latter, the upper 

 ones are often simple. The pods vary much in size, reticu- 

 lation and tuberculation, and in each cell two seeds often 

 mature. In the specimens from San Juanico, the opening 

 between the valves is evident, but in those from Calamujuet 

 it is completely closed, even after the falling of the valves, 

 by the persistent funicle. The distinction between some 

 of these forms and W. refracta is very slight, and the great 

 differences observed in the septum and in the relative stout- 

 ness of the style, almost lead one to doubt whether even the 

 little-known Oxystylis lutea may not be more closely related 

 than is generally supposed. 



Atamisquea emarginata Miers. Specimens of this ill- 

 smelling bush have also been collected from neighboring 

 regions by Mr. Pringle and Dr. Palmer. It is undoubtedly 

 this species, but the structure of the flower shows so much 

 variation from the type described and ligured in Linn. 

 Trans. XXI, i, t. 1, that a somewhat detailed description is 

 rendered necessary. The tw^o outer large valvate sepals 

 entirely cover the two inner alternate somewhat obovate 

 ones, that differ from the figure in being much shorter and 

 jiaving a different form, but are of a similar color to 

 the outer ones, and with them deciduous. Opposite to 



