446 ADDENDA. 



On page 190, before Lappa, may be inserted, 



99a CARDUUS NUTANS, L. Bristles of the pappus not plum& **, nearly 



naked. Stem 2f, slender; Ivs. narrow, sinuate-spinescent, decurrent, 2 3'. Heads few, 

 large, nodding, purple. Ach. linear-oblong, rugulous, 2", crowned with a miriy-bris-tled 

 deciduous pappus three-quarters of an inch long. Harrisburg, Pa. (Prof. ForUr). Eur. 



Page 208. After P. (Prinos) laevigatxis, add, 



3a P. pubesceits MX. Shruh 6 8f, with smooth, virgate branches ; Ivs. lge, ovate, 

 acuminate, serrnlnte, soft pubescent beneath ; clusters umbellate, axillary, shorter 

 than the petioles; berries dark red, 2-3" in diameter. Alleghanies, Pa. 



Page 281. Next before R. (Rumex) crispus, insert, 



1 R. patientia L. Patience Dock. Stem 3 5f, stout; leaves lance-oblong, 6' 2f; 

 valves large (23"), broad-cordate, one of them bearing a small grain or all naked. 

 Grows at New Baltimore, N. Y. (Dr. Howe.) Eur. 



Page 388. Next before S. (Stipa) avenacea, insert, 



1 S. Rlchardsonii Link. Culm 1520', very erect and slender ; Ivs. shorter, fili- 



form ; pan. loose, 3 4' ; glumes near 2", acutish : pales not bearded at the blunt 

 base, the crooked awn about 6" in length. Mt. Marcy, N. Y. (C. H. Peck.) 



Page 394. After C. (Cenchrus) tribuloides, add, 



2 C. ecliimvtuK L. Differs from No. 1, in the globular, purplish, downy involucres, 



beset above with rough, stiff bristles, and cleft into 810 segments inclosing 3 8 

 flower?; grain brown. South. 



Page 44. After C. (Cle6me) pungens, add, 



2 C. iiitegrifolia (Xutt.) Smooth, glaucous, 1 2f ; Ivs. 3-foliate, Ifts. lance-oblong, 

 entire, mucronate ; rac. dense; calyx 5-toothed ; pet. roRe-color, subsessile, 4" ; 

 Htam. 6. equal : pod much longer than its stipe. Banks of the Mississippi R., N. 

 Illinois. (Mr. V.Fiiese.) and Westward. 



Page 343. Afier T. (Tiillium) ci'rnmim, add, 



ft. alroruben*. Petals brownish purple, ovate-lanceolate, acuminate. Hanover, 

 Indiana, i .)//. A. II. Young.) 



Page 291. After Phorodendron, insert, 



2. AROEUTHOBIUM, Bieb. Differs from Phorodendron in having its 

 anthers 1 -celled, the $ perianth 2-toothed, the herbage yellowish and 

 leafless. 



A. Oxycedrl, . abigenitim (Wood). Found growing on the branches of small 

 starved spruce-trees (Abies nigra), in a mar^h in Sandlake, N. Y. (C. If. Peck). 

 Stems 39", jointed, each joint terminating in a truncated eheath. Fls. terminal 

 and opposite; berry some 3-angied. The variety a grows on Pines and Cedais iu 

 Cal. and Oreg.! and is much larger. 

 Page 133. Under Sesuvium, insert, 



2 S. pentandrum Ell. Lvs. spatulate-obovate ; fls. sessile ; stamens 5. 1 Sea- 

 coast, E. Hampton, L. T. (,/. S. Merriam), Cape May (C. F. Parter), Cnpe Ilenlopea 

 (Dr. Leidy), to Fla. Hitherto mistaken for IS. Portnlacastrum. 



Page 164. After 45 A. (Aster) ericoides, insert, 



j3. vtllostt* CMx.) Stem, branches, and often the leaves villous-hirsute. 



Page 167. After 8 S. (Solidago) latifolia, ft. puben*, insert, 



ft. riltata (DC.) Upper racemes elongated and spreading. 111. (Mr. Wolf.) 



