Nuttalliance. N. O. Cruciferce 



TAB. CCLXXVII, 



Hymenolobus divaricatus 



Gen. Char. — Hymenolobus. NutL — Silicula ovata seu elliptica, 

 valvis subtumidis paululum carinatis apteris, loculis polysper- 

 mis. Stigma sessile. — Herbae annuce^ parvas^ gracUes^ glahr(s ,- 

 caulihus divaricatis ; foliis pinnatifidis v* laciniatu. NutL in 

 Torr. et Gr. FL N. Am. v. I. p. 1 1 T. 

 H. divaricatus ; procumbens ramosus, foliis brevibus pinnatifidis, 

 lobis plurimis oblongis, supremis linearibus saepe integerrimis, 

 silicula elliptico-oblonga obtusa. Nutt. in Tort, et Gr, L c. 

 Hab. Shady grassy plains of the Oregon, (Columbia) N. W. 

 America, near the junction of the Wahlamet, NuttalL 

 The specimens here figured are those communicated to me by 

 the kindness of Mr Nuttall. It will be at once seen how very 

 closely this Genus is allied to that of our preceding figure 

 {Stenopetalum incisifoKum) from Australia. Here the valves of 

 the silicula are keeled, and thence there is an approach to the 

 winged keel of Capsella^ which has led Messrs Torrey and Gray 

 to make the remark that it is " scarcely different from Capsella ; 

 with which it is apparently connected through C elliptica^ C. A. 

 Meyer, (PI. Caucas. p. 194.) Hutchinsia procumbens^ Desv. 



Hymenolobus procumbens^ Nutt. mst." 



Mr Nuttall describes a second species from the Oregon which 

 I have not seen, but which, he says, grows with the preceding, 

 and very nearly allied to it. It is 

 " H. erectus ; caule erecto ramoso, foliis oblongls subpinnatifidis 



V. integris, silicula lineari-oblonga.*' 



Fiff. 1. Flower. /. 2, 3. Silicula. / 4. Valve of do. / 5. 

 Dissepiment and seeds. / 6. Seed. /. 7. Scarcely mature 

 embryo : — magnijied. 



