I9O GREENE 



belong here, for, while in these the foliage is larger, the leaflets 

 seem to have all the marks of R. cismontana, even to the peti- 

 olules, these being very evident. 



19. RHUS SAMBUCINA, sp. nov. 



Stem and branches unknown : leaves of few leaflets, the 

 whole leaf, including the rather long petiole, little more than 2 

 dm. long, the leaflets 11 or 13, approximate, large, 7-10 cm. 

 long, oblong-lanceolate, acutish at base and subpetiolulate, the 

 apical acumination rather abrupt and short, the sides with 11 or 

 12 quite large and sharp serratures, the texture of mature foliage 

 not known, color of upper face a pale glaucescent green, of the 

 lower only paler, with nothing of the white bloom of real R. 

 glabra: panicle not pyramidal even in flower, but rather oval, 

 or at most oval-subpyramidal, in fruit oval, decidedly lax, the 

 branches villous-pubescent ; drupelets of middle size. 



Singular species, with broad short leaves made up of few and 

 much serrated leaflets, all pale green on both faces. The locality 

 of this is remote and but little known. The type specimens 

 are in Herbarium Field Museum, sheet 140404, and are from 

 near Piedmont, South Dakota, by Alice Pratt, June and August, 

 1895. Unfortunately only the young foliage is present; the 

 one fruiting panicle was preserved only as detached from the 

 branch ; yet this matches perfectly, in its peculiar branching 

 and laxity, the flowering panicles. 



In the same herbarium, sheet 123606, are flowering speci- 

 mens of what seems to be the same, from southern Iowa, 

 Decatur County, T. J. Fitzpatrick, June 13, 1896. 



20. RHUS NITENS, sp. nov. 



Shrub stoutish, perhaps low, young branches and also petioles 

 and lower face of foliage merely glaucescent : leaves short and 

 short-petioled, the whole leaf barely 2 dm. long, the petiole and 

 rachis stout, ascending; leaflets 13-17, closely approximate, 

 seldom opposite, lance-oblong, 4.5-6.5 cm. long, subcoriaceous, 

 sessile by an obtuse base, the apex cuspidately acute rather than 

 acuminate, evenly but not deeply serrate, the serratures 10-12 



