ADDENDA. 



Page 143, next after R. abortivus, insert, 



R. RHOMBOiDEUs. Goldic. 



Hirsutely pubescent ; ^t. much branched from the base ; rad. Ivs. entire, 

 rhomboid-ovate, crenate-dentate, on long petioles, cauline Ivs. palmate, Jlorai 

 deeply laciniate ; sep. spreading ; hds. of carpels (large) globose ; ac/i. smooth, 

 with very short iDeaks. — Wise. Laphavi! and Can. W. A low, bushy, hairy 

 species, 6 — 10' high. Root leaves about 1' by §', often roundish or elliptical, 

 the petioles about 2' long. Segments of the stem leaves linear-oblong, obtuse 

 oftcner entire. Petals yellow, oblong-obovate, exceeding the calyx. 



Page 166, next after A. lsivigata, insert, 



Arabis Patens. Sullivant. 



Erect, everywhere clothed with rigid, simple or forked hairs ; radical Ivi, 

 rosulate, petiolate, middle ones oblong-ovate, coarsely dentate, auriculate-ara- 

 plexicaul, upper ones linear-oblong, subentire ; pedicels longer than the rather 

 large white flowers ; siliques spreading and curved upwards, beaked with the 

 conspicuous style. — Rocky banks of the Scioto river, Columbus, O., Sullivant. 



Page 378, next after P. eotundifolia, insert, 



Pyrola uliginosa. Torr. & Gray. 



Lvs. nearly round, sometimes inclining to ovate, coriaceous, longer than 

 the petiole, decurrent, with a few prominent veins; scape somewhat angular, 

 with lanceolate bracts ; rac. 8 — 12-flowered ; cat.. J the length of the petals ; pet. 

 ovate-oblong; stam. ascending; Jil. smooth; ova. depressed ; sty. declined, cla- 

 vate. — Sphagnous swamps, Galen, N. Y., Sartioell. Scape 4— -S' high, many- 

 flowered.^ Petals reddish-purple. Stigma toothed. June. {^Dr. Sari, comm.) 



Page 397, next after V. (Verbascum) Lychnitis, insert, 

 /?. hybrida. SI. simple, erect, tomentose ; lvs. ovate-oblong, subcordate, woolly 

 on both surfaces; Jls. in a terminal,' somewhat leafy spike, yellow. — Rome, 

 N. Y., Vasey. Apparently a hybrid between V. lychnitis and V. Thapsus. 



Page 420, next after P. pilosum, insert, 



Pycxanthemum Torreyi. Benth. 



St. pubescent, slender, moderately branched ; lvs. linear-lanceolate, smooth- 

 ish, acute, denticulate, margin ciliate, under surface downy; cynwse heads con- 

 tracted hemispherical ; cat. with lanceolate acuminate teeth with bristly hairs 

 at the summit; sLarti. exserted. — York Island, Carey. Stem purplish, strict, 

 about 2f high. Leaves 2 — 3' by 4". Corolla two-lipped, white. Ovary naked 

 at the summit. Aug. (Or. Sartwell comm.) 



Page 474, next after P. mitk, insert, 



PoLYGONiTM Careyi. Olncy. 



SI. erect, hirsute, much branched ; lis. lanceolate, with scattered and ap- 

 pressed hairs; slip, scarioos, tubular, truncate, hairy; spikes axillary and ter- 

 minal, on very long, nodding peduncles, thickly beset with glandular hairs ; 

 stam. shorter than perianth: sly. 2; ach. orbicular-ovate, mucronate. — Swamps, 

 N. H. ! to R. I. Olncy. Plant 3— 5f high. Leaves 3—6' by A— 1', midvein 

 and margins hair}^ Calyx greenish-purple tinged with white, small. Resem- 

 bles P. Pennsylvanicum. Jl. 



