232 CALIFORNIA ACADEMY OF SCIENCES. 



It has not been possible with the material at command to 

 determine with certainty the shape of the embryo; it is 

 more or less curved, somewhat irregularly so, the ovaries 

 altering slightly by mutual pressure. The fruiting twigs 

 look like oblong irregular galls, more or less constricted in 

 parts, and seem to remain on the plant for a considerable 

 time — perhaps more than a year. 



This very peculiar genus seems to be nearest to Jussicea 

 and Ludwigia, the capsules of which, with alternate bracts 

 upon the peduncle, or even on the ovary, show a distinct 

 approach to it, and the structure of the glandular disc is 

 very similar. 



EUCNIDE CORD ATA Kell. 



Mentzelia hispida Willd. 

 Sympetaleia aueea Gray. 

 Marali minirna Kell. 

 Passifloea fcetida L. 

 HousTONiA ASPERULOIDES Gray. 

 Ageratum, sp. 



HOFMEISTERIA FASGICULATA (Benth). 



Franseria chenopodifolia Benth . 



Franseria Bryantii. — Suffrutescent, low and branching, 

 nearly glabrous: leaves bipinnatifid, with linear lobes: 

 5 spike short 10-15 flowered: ? solitary, 2-3 flowered, usu- 

 ally from tiie same axil as the 5 sjDike : fruiting involucre, as 

 well as the weak inch-long subulate-terete, straight spines, 

 smooth and shining white. 



A remarkable species from its very long, white spines, 

 which give it a rather formidable appearance. 



Heliopsis, sp. 



ViGUIERA SUBINCISA? Benth. 



