446 ADDENDA. 



On page 190, before Lappa, may be inserted, 



99a CARDUUS NUTANS, L. Bristles of the pappus notplumous, nearly 

 naked. Stein 2f, slender ; Ivs. narrow, sinnate-spinescent, decurrent, 2 3'. ilearls few, 

 large, nodding, purple Ach. linear-oblong, rugulous, 2", crowned with a miiuy-bristled 

 deciduous pappus three-quarters of an inch long. llarrisburg. Pa. (Prof. Porter), i Kur. 



Page 208. After P. (Prinos) laev.igatas, add, 



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

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

 than the petioles; berries dark red, 23" in diameter. Alleghanies, Pa. 



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



1 It. patieiitla L. Patience Dock. Stem 3 5f, stout; leaves lance-oblong, 6' Sf; 

 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. Rlchardsonll Link. Culm 15 20', very erect and slender ; Ivu. 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.'i 



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



2 C. echiiiatus L. Differs from No. 1, in the globular, purplish, downy involucre*, 



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

 flowers ; grain brown. South. 



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



2 C. liitegrliolla (Nutt.) Smooth, glaucous, I 2f ; Ivs. 3-foliate, Ifts. lance-oblong, 

 entire, mucmnate : rac. dense; calyx 5-toothed ; pet. rose-color, subst-smle. 4"; 

 *tam. (i. equal ; pod much longer than its stipe. Banks of the Mississippi R.. N 

 Mliin i*. (Jfr. V.Friese.) and Westward. 



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



ft. alrorubens. Petals brownish purple, ovate-lanceolate, acuminate. Hanover, 

 Indiana. (Mr. A. H. Yuung.) 



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, (3. abigeinum (Wood). Found growing on the branches of small 

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

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

 and opposite; berry some 3-angied. The variety a grows on Pines and Ceilais in 

 Cal. and Oreg.! and is much larger. 

 Page 133. Under Sesuvium, insert, 



S. pentandrum Ell. Lvs. spatulate-obovatc ; fls. te?sile ; stamens 5. Q>1 Sea 

 coast, E. Hampton, L. I. (</. S. Merriam), Cape May (C. I 1 '. Parker), Cape Henlopeo 

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



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



0. .//OM* (Mx.) Stem, branches, and often the leaves villoub-hirsute. 



Page 167. After 8 S. (Solidago) latifolia, fi. puhens, insert, 



fl. rtUuift (DC.) Upper racemes elongated and spreading. PI. (Mr. Wolf.} 



