OF ARTS AND SCIENCES: FEBRUARY 13, 1872. 377 



32. Cardamine hirsuta L. : an ordinary form ; with some of a 

 slender small-leaved variety, named by Nuttall 0. microphylla. 



33. Arabis hirsuta Scop. ; the western form ; and A. perfoliata 

 Lam., the form which is Turritis macrocarpa Nutt., sparingly col- 

 lected. 



34. Thelypodium laciniatum Endl. (Macropodium Hook.) In 

 fruit. 



35. Erysinum asperum DC, var. E. datum Nutt. 1. c. 



36. Sisymbrium deflexum Harvey ; Torr. Bot. Whippl. p. 10. 

 With mature fruit. 



37. Lepidium Menziesii DC. ; Hook. Fl. Bor.-Am. 1, p. 68. 



38. Thysanocarpus curvipes Hook. 1. c. p. 69, t. 18. 



39. Thysanocarpus pusillus Hook. Ic. t. 43, which includes 

 T. oblongifoliiis Nutt. 



40. Cleome lutea Hook. Fl. Bor.-Am. 1, p. 70, t. 25. 



41. Viola bland a Ait. ; apparently, but wholly in fruit. 



42. Viola canina L., var. V. adunca Smith ; Hook. 1, p. 79. 



43. Viola Nuttallii Pursh. ; Hook. 1. c. t. 26. Mostly in fruit. 



44. Viola sarmentosa Dougl. in Hook. 1. c. Small form, in 

 fruit. 



45. Viola glabella Nutt. in Torr. & Gray, 1. c. Too near V. 

 pubescens. 



40. Viola Hallii, n. sp. Melanium, glabra, ut videtur perennis ; 

 caulibus e surculo gracili adscendentibus spithamaais a basi foliatis ; 

 foliis trisectis, segmentis in petiolum longum rhachinque decurrentibus 

 cuneatis trifidis (lateralibus quandoque lanceolatis subintegris), lobis 

 lanceolatis ssepius integerrimis ; stipulis foliaceis lanceolatis oblongisve 

 sublaciniatis, uno saspissime multo minore integerrimo ; petalis 3 luteis 

 quorum lateralibus basi tenuiter barbatis, 2 superioribus atro-violaceis ; 

 calcare brevissimo. — Most unexpected as a North American species, 

 and a striking and handsome one, with the flower of a Pansy ; the 

 petals half an inch or more in length. Style clavate, the large almost 

 regular stigma bearded all round. Near Salem. 



47. Hypericum anagalloides Cham. & Schlecht. in Linnsea, 3, 

 p. 127. 



48. Hypericum Scouleri, Hook. Fl. Bor.-Am. 1, p. 111. 



49. Elatine Americana Arn. Crypta minima Nutt. 



50. Silene Drummondii, Hook. Fl. Bor.-Am. — Two or three 

 vol. vill. 48 



