ADDITIONS AND CORRECTIONS. V 



4, very short : anthers globular. Style 1, very short : stigma ovoid, entire. 

 Pod ovoid, a little flattened, notched at the apex, loculicidaliy 2-valvcd, 

 many-seeded. A smooth, diffusely spreading and much-branched small 

 annual, with narrowly linear or awl-shaped leaves, connected at their base 

 across the stem by a slight stipular line ; the small flowers solitary and 

 sessile in the forks and a: the ends of the branches ; corolla inconspicuous, 

 white. (Name altered from TroXvirpefjivos, many-stemmed.) 



1 . P. proctimbeus, L. Dry fields, mostly in sandy soil, Virginia 

 and southward. June -Sept. 



Page 205, after Solidago nemoralis, add : 



27'. S. St&diila, Nutt. Stem and oblong or obovate-spatulat3 leaves 

 rteid and very rough, not hoary, the upper sessile ; scales of the involucre 

 oblong, rigid ; rays 3-6 : otherwise much as in No. 27. Dry hills, W. 

 Illinois and southwestward. 



Page 213. XAXTHIUM spix6suM should have been printed in small capitals 

 (as here), being an introduced species. 



Page 226, Una 24 ; after " hemispherical " add : (merely convex in No. 1). 



Page 231, at the end of Scnecio, add : 



# # # Rat/s present: root annual: heads in a crowded corymb. 

 5. S. lobiifus, Pers. (BUTTER-WEED.) Glabrous, or loosely woolly 



at first; leaves ruiher iljshy, lyrate or pinnately divided; the divisions 

 are or cut-lobed, variable. Low banks of the Ohio and Mississippi, 

 Illinois, and southward. 



Page 231, line 2 from bottom, add : Lake Superior, Prof. Whitney. 

 Page 234, line 1 1, add : W. Illinois and westward ; common. 



Page 253, lines 9, 10 from bottom, in place of " or terete," insert : flat or fiattish 

 and channelled above. 



Page 281, line 23, for " Lake Huron," read : Lake Michigan. 



Page 238, line IS, read : from Vermont and New Hampshire to Virginia and 

 southward, chiefly near the coast. 



Page 291, line 26, for " 12-20-seeded," read : 1-2-seeded. 



1 0, line 22, for "River-banks and plains," read : Oak-openings and woods. 

 Line 23, for " July," read : May, June. 



Page 352. line 2. Asclepias Sullivantii has scarcely sessile leaves ; and the horns 

 of the hoods of the corolla are flat, broadly scythe-shaped, and abruptly acute. 



Page 35'J, after line 7, add : 



2'. A. 3Ic-9<lii, n. sp. Torr. Very smooth, pnle ; stem simple (1 

 high), bearing a single terminal umbel (on a peduncle 3' long) ; Icnivs all 

 op;, ' >n<r. the upper o vat '.--oblong or somewhat heart-shaped, 



obtuse, imicroiKue, the plane (i.ct wary) margins and the numerous rather 

 slender pedicels downy when young ; divisions of the greenish-white corolla 

 oblong-ovate (4" long), half the length of the pedicel ; hoods of the digktly 



