8^ LEAFLETS. 



that something like the restoring Caulanthus as a genus and the 

 merging in it of the perennial Streptanthi of the Eocky Moun- 

 tains and the Great Basin had been a better course. But the 

 most needful thing to be done, as I now view the case, is the 

 complete segregation from Sireptanthus of many, if not all the 

 Calif ornian plants that have been so referred ; for in their floral 

 characters they are extremely different from the typical species 

 belonging to the flora of distant Texas and Arkansas. Whether, 

 however, these annuals and perennials of California were better 

 placed as constituting one new genus or two three, is a matter 

 concerning which there might easily be diversity of opinion, 

 and upon which my own might change under more light. 



Most of the Californian species were first really described by 

 myself ; this being said not only of the many kinds that were 

 discovered and first published by me, but also of most of those 

 named and imperfectly or even falsely described by earlier 

 authors. For that particular group which Nuttall indicated as 

 sub generic under the name Euclisia, and which I here propose 

 in the rank of a genus of the same name, the characters of the 

 species reside chiefly in the calyx; the corolla in all being 

 extremely different from that of true Sireptanthus, as has been 

 indicated by many authors ; but the corolla of euclisia is in 

 no particular different from that of all Caulanthus, Stanfordia, 

 and a great proportion of the species at present referred to 

 Thelypodium. 



On the calyx alone, then, unless the flatness of the pods, and 

 the absence of broad more or less rounded bracts replacing 

 leaves upon the stem, euclisia must seem to rest ; and those 

 marks of the calyx I have presented fully, in the diagnosis of 

 species in the Flora Franciscana, and in the Bay Eegion 

 Manual. It is, on the whole, a bilabiate calyx, in at least, the 

 typical species, three of the sepals being connivent together at 

 tip behind the corolla on the upper side ; the individual sepals 

 sharply carinate, also never green, but white or else deeply, 

 usually^ even darkly colored. I append a partial list of species. 



E. GLAS^DULOSA. 5. glandulosus. Hook. Ic. c. 40 (1836), as 

 to original specimens, but figures false, S. peramcenus, Greene, 



