ADDENDA. 



Page 142, next after R. ABORTIVUS, insert, 



R. RHOMBOIDEUS. Goldie. 



Hirsutely pubescent ; st. much branched from the base ; rod. Ivs. entire, 

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

 deeply laciniate; sep. spreading; hds. of carpels (large) globose; ach. smooth, 

 with very short beaks. Wise. Lapham! and Can. W. A low, bushy, hairy 

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

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

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



Page 166, next after A. L.KVIGATA, insert, 



ARABIS PATENS. Sullivant. 



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

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

 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. ROTUNDIFOLIA, 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 ; roc. 8 12-flowered ; col. \ the length of the petals ; pet. 

 ovate-oblong; stain, ascending; fll. smooth; ova. depressed; sty. declined, cla- 

 vate. Sphagnous swamps, Galen, N. Y., Sartwell. Scape 4 8' high, many- 

 flowered. Petals reddish-purple. Stigma toothed. June. (Dr. Sart. comm.) 



Page 397, next after V. (VERBASCUM) LYCHNITIS, insert, 

 /?. Jiybrida. St. simple, erect, tomentose ; Ivs. ovate-oblong, subcordate, woolly 

 on both surfaces; fls. 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, 



PYCNANTHEMUM TORREYI. Benth. 



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

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

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

 at the summit; stam. 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. (Dr. Sartwell comm.) 



Page 474, next after P. MITE, insert, 



POLYONUM CAREYI. Olney. 



St. erect, hirsute, much branched ; Ivs. lanceolate, with scattered and ap- 

 pressed hairs; stip. scarious, tubular, truncate, hairy; spikes axillary and ter- 

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

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

 N. H. ! to R. I. Olney. Plant 3- 5f high. Leaves 3 6' by J 1', midvein 

 and margins hairy. Calyx greenish-purple tinged with white, small. Resem- 

 bles P. Pennsylvanicum. Jl. 



Page 571, next after S. OLMYI, insert, 



S. TORREYI. Olney. (S. mucronatus. Torr. N. Y. St. PL not Linn.} 

 St. triquetrous, the sides concave and nearly equal, the base leafy ; spikes 

 d 4, sessile, oblong, lanceolate, acute; glumes ovate, subcoriaceous, mucro- 

 nate, smooth; anth. acute, not fringed at" apex; bristles longer than the ache- 

 nium ; sty. 3-cleft : ach. angular, convex externally, acuminate. Mass., R. I., 

 N.Y. 



