ADDENDA. 
Page 142, next after R. aporrivus, insert, 
R. RHOMBOIDEUS. Goldie. 
Hirsutely pubescent; st. much branched from the base; rad. ivs, entire, 
rhomboid-ovate, crenate-dentate, on long petioles, cauline lvs. palmate, floral 
deeply laciniate; sep..spreading; hds. of carpels (large) globose; ach. smooth, 
with very short beaks.—Wisc. Lapham! and Can. W. A low, bushy, hairy 
species, 6—10’ high. Root leaves about 1’ by 3’, 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. LaviearTa, insert, 
AraBis Patrens. Sullivant. aes 
Erect, everywhere clothed with rigid, simple or forked hairs; radicat lws. 
rosulate, petiolate, middle ones oblong-ovate, coarsely dentate, auriculate-am- 
plexicaul, wpper ones linear-oblong, subentire; pedicels longer than the rather 
large white flowers; siligues spreading and curved upwards, beaked with the 
conspicuous style.—Rocky banks of the Scioto river, Columbus, O., Sullivant. 
Page 378, next after P. rorunpiFoLra, insert, 
Pyrota vLicinésa. Torr. & Gray. 
_ Lws. 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; cal. } the length of the petals; pet. 
ovate-oblong; stam. ascending; fil. 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) Licuniris, insert, 
B. hybrida. St. simple, erect, tomentose ; lvs. ovate-oblong, subcordate, woolly 
on both surfaces; /ls.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. prLosum, insert, 
PycnantHEemMuM Torreyi. Benth, 
St. pubescent, slender, moderately branched ; dvs. linear-lanceolate, smooth- 
ish, acute, denticulate, margin ciliate, under surface downy; cymose heads con- 
tracted hemispherical ; ca/. 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. mIre, insert, 
PotyGconum Careyi. Olney. 
St. erect, hirsute, much branched; dvs. 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, 
H.! to R. L. Olmey. Plant 3—5f high. Leaves 3—6! by 4—1’, midvein 
and margins hairy. Calyx greenish-purple tinged with white, small. Resem- 
bles P. Pennsylvanicum. Jl. 
* 
