151 CRUCIFERjK 



oblong, somewhat flattened parallel with the partition, not 

 margined, smooth. Cotyledons linear, almost terete, par- 

 allel with the placentae, a little longer than the radicle 

 against which they are incumbent (on the side next the 

 placenta). 



Herbs with perennial roots, leafy stems, and glaucous 

 smooth foliage ; the leaves pinnately divided or entire. 

 Flowers golden-yellow or greenish-yellow, pretty large, in 

 more or less elongated racemes, ebracteate. Flower-buds 

 linear-clavate. 



Etymology. Dedicated by Mr. Nuttall to Lord Stanley, who was dis- 

 tinguished as an ornithologist and patron of natural history. 



Properties. These plants differ from the rest of the family, and resem- 

 ble Capparidaceee (to which they approach somewhat in structure) in their 

 nauseous and emetic qualities. (Vide Nuttall, I. c.) 



Geographical Distribution. The genus was established on S. pinna- 

 tifida (the Cleome pinnatifida, Pursh, first gathered on the Upper Missouri 

 by Bradbury), of which Mr. Nuttall gave an admirable description ; a sec- 

 ond species from the base of the Rocky Mountains was detected by Dr. 

 James, and two others were subsequently found in the same region by Nut- 

 tall himself. The genus is restricted to the Rocky Mountains, except as to 

 the original species, which descends the Missouri for a great distance. 



PLATE 65. Stanleya pinnatifida, Nutt.; — summit of a young flow- 

 ering stem, collected on the Missouri by Mr. Sprague; of the nat- 

 ural size. 



1. A flower, enlarged. 



2. An anterior sepal ; and 3, a petal, enlarged. 



4. Pistil, with the stipe and receptacle, enlarged. 



5. A ripe dehiscent silique, enlarged ; from an original specimen of Brad- 



bury, in Herb. Lambert. 



6. Tissue from the partition, highly magnified. 



7. Seed, magnified. (From specimens gathered by Mr. Sprague.) 



8. The same, transversely divided. 



9. Embryo detached entire, equally magnified. 



