BOTANY OF THE XOUTIIE11X UNITED STATES. XCU1 



tened, notched at the apox, loculicidally 2-vaIved, 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 at the ends of the 

 branches ; corolla inconspicuous, white. (Name altered from TroXvirpep-vos, 

 many-stemmed) 



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

 and southward. June - Sept. 



P. 196. 



30 a . Aster ametliystiims, Nutt. Differs from A. oblongifolius in its 

 more upright growth, more hirsute and cinereous pubescence (that of the stem 

 widely spreading), which is not at all glandular or viscid, more racemose heads 

 of smaller size, the scales of the involucre erect or less spreading, the rays of a 

 light clear blue. E. Massachusetts, Dr. Rolbins, W. Doott ; and meadows near 

 Amherst, Prof. Tuckerman. Athens, Illinois, Mr. E. Hall. 



P. 200. 



3. Boltonia diffusa, L'Her. Stem diffusely branched ; leaves lance- 

 linear, those on the branchlets very small and awl-shaped ; heads panicled, very 

 small ; pappus of several very short bristles and 2 short awns. Prairies near 

 Centralia, Illinois, Vasey. Common southwestward. 



P. 205. 



27 a . Solidaro Radula, Nutt. Stem and oblong or obovate-spatulate 

 leaves rigid 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. Probably runs into S. ncmoralis. 



P. 227. 



3*. Artemisia, dracimculoides, Pursh., a perennial species, com- 

 mon west of the Mississippi, with leaves linear and entire or the lower 3-cleft, 

 cinereous or nearly glabrous, and small panicled heads, has been found in S. W. 

 Illinois by Dr. Vasey. 



7*. A. frigida, L., of the third section (p. 228), a low species, slightly 

 woody at the base, white all over with a soft silky wool, the leaves pinnatcly 

 parted, their divisions 3 - 5-cleft and linear, was found at the Falls of St. Anthony 

 by L. Lesquereux and E. Hall, and is common thence northwestward. 



P. 231. 



5. SeilCCiO palatStriS, Hook. Root biennial ; stem stout j- 3 high, 

 woolly when young, glabrous with age ; leaves laciniate or irregularly cut- 

 toothed, the upper with a cordate-clasping base ; heads many in a corymb, with 

 20 or more short rays, the pappus becoming very long. N. W. Wisconsin ( T. 

 J. Hale) and northward. (Eu.) 



6. S. lobfttUS, Pers. ( BUTTER-WEED.) Annual, glabrous, or loosely 

 woolly at first; leaves rather fleshy, lyrate or pinnately divided ; the divisions 

 crenate or cut-lobcd, variable ; heads many in a corymb, small ; rays about 12. 

 Low banks of the Ohio and Mississippi, Illinois, and southward. 



