446 ADDENDA. 



On page 190, before Lappa, may be inserted, 



99a CARDUUS NUTANS, L. Bristles of the pappus nftt plume, 'is, nearly 

 naked. Stem 2f, slender; Ivs. narrow, einuate-spinescent, decurrent, 2 3'. /leads few, 

 large, nodding, purple. Ach. linear-oblong, rugulous, 2", crowned with a mirjy-bri titled 

 deciduous pappus three-quarters of an inch long. Harrisburg, Pa. (Prof. Fof;' r). Eur. 



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



3a P. pu bescciis MX. Shrub 6 8f, with smooth, virgate branches ; Ivs. luge, ovate, 

 acuminate, serrulute, poft 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, 



I K. patieiitia L. Patience Dock. Stem 3 of, stout; leaves lance-oblong, 6' 2f; 

 valves large (2 3"), 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. Ricliardsoiiii Link. Cnlm 15 20', very erect and slender; IVP. 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. (<7. //. Peck.) 



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



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



beset above with rough, stiff bristles, and cleft into 8 10 segments inclosing 3 6 

 flowers ; grain brown. South. 



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



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

 entire, mucronate ; rac. dense; calyx 5-toothed ; pet.- rose-color, subsepsile, 4"; 

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

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



Page 340. After T. (Trillium) cernuum, add,- 



$. atrorubm*. Petal? brownish purple, ovate-lanceolate, acuminate. Hanover, 

 Indiana. {Mr. A. II. Young.) 



Page 291. After Phorodendron, insert, 



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

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

 leaflet. 



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

 starved spruce-trees (Abies nigra), in a marsh in Sandlake, N. Y. (C. 11. Peck). 

 Stems 39", jeinted, each joint terminating in a truncated sheath. Fls. terminal 

 and opposite; berry some 3-angled. The variety a grows on Pines and C'edais in 

 Cal. and Oreg.! and is much larger. 



Page 133. Under Sesuvium, insert, 



2 S. pentandriim Ell. Lvs. epatulate-obovate ; fle. sessile ; stamens 5. 1 Se* 

 coast, E. Hampton, L. I. (J. S. Merjiam), Cape May (C. F. Parker), Cape Henlopcu 

 (Dr. Leidy), to Fla. Hitherto mistaken for S. Portulacastram. 



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



/3. vlllosuf (Mx.) Stem, branches, and often the leaves villons-hirsute. 



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



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



