ADDENDA 



January, 1868. 



To page 110. 

 Ruta graveolens, L., Garden Rde, is naturalized on rocky roadsides, 

 Bedford Co., Virginia, according to A. H. Curtiss. 



To page 112, 113. 



2. Vitis aestivalis, Michx. Original of the Clinton, Norton's Virginia 

 Seedling, and some other wine grapes. 



Var. 1 cin&rea, Engelm. " Branchlets and both sides of the almost entire 

 leaves cancscent, even when mature ; berries very small, black and shining, very 

 acid until after frost. — Rich bottom lands in the Mississippi Valley, Illinois, 

 and southward." Engelmann. 



3. V. eordifolia, Michx., according to Engelmann, " has the small berries 

 black without bloom, the small seeds rounded above and with a prominent 

 rhaphe. Unfit for cultivation." 



3*. V. riparia, Michx., Dr. Engelmann concludes should be restored as a 

 species, with the following character. " Leaves larger, usually incisely 3-lobed, 

 the lobes long-pointed; panicles small, rather simple; berries larger and mostly 

 with bloom ; seeds larger, obtuse or somewhat obcordate and with an inconspic- 

 uous rhaphe. — May, earlier than V. eordifolia. Thickets and river-banks, 

 from Vermont to Michigan and Illinois. Several varieties in cultivation : the 

 most esteemed white one is the Taylor-Bull.it Gtxipe. The celebrated claret-col- 

 ored Delaware Grape seems also to belong here." Engelmann. 



To page 126, after Genista. 

 Cytistjs (or Sarothamnus) scopXrius, Scotch Broom, of Europe, 

 which is often planted for ornament, has become naturalized extensively in Vir- 

 ginia near Washington and southward, according to A. H. Curtiss, so as to 

 deserve a place in this work. May, June. 



To page 130. 



4. Petalostemon folidsus, Gray, in Proceed. Amer. Acad. 7, p. 336. 

 Smooth, very leafy ; leaflets 16-29, linear-oblong, mucronate, the glands few 

 and small; spikes cylindrical, short-peduncled ; bracts slender-awned from a 

 lanceolate base, exceeding the rose-purple flowers ; calyx also glabrous, the 

 teeth about half the length of the cylindraceous tube. — Banks of Fox River, 

 Kane Co., Illinois, Mr. Burgess Truesdelf. Also Nashville, Tenn., Mr. Hatch. 

 " Like the other species pleasantly fragrant." Aug. 



