244 COMPOSITE. (COMPOSITE FAMILY.) 



25. S. Dmmmdndii, Torr. & Gr. Stem (l-3 high) and lower surface 

 of the broadly ovate or oval somewhat triple-ribbed leaves minutely velvety-pubescent, 

 some of the leaves almost entire ; racemes panicled, short ; scales of the in- 

 volucre oblong, obtuse ; rays 4 or 5. Rocks, Illinois opposite St. Louis, and 

 south westward. 



+- H_ +- H_ Leaves entire or nearly so, thickish, reticulate-veiny, but the veins obscure. 



26. S. pilbsa, Walt. Stem stout, upright (3 -7 high), clothed with spread- 

 in<j hairs, often panicled at the summit ; leaves oblong-lanceolate, roughish, hairy 

 beneath, at least on the midrib, serrulate, the upper ovate-lanceolate or oblong 

 and entire, closely sessile ; racemes many, recurved, crowded in a dense pyram- 

 idal panicle ; rays 7-10, very short. Low grounds, pine barrens of New Jer- 

 sev to Virginia, and southward. 



27. S. Od6ra, Ait. (SWEET GOLDEN-ROD.) Smooth or nearly so through- 

 out; stem slender (2 -3 high), often, reclined ; leaves linear-lanceolate, entire, shin- 

 ing, pellucid-dotted; racemes spreading in a small one-sided panicle; rays 3-4, 

 rather large. Border of thickets in dry or sandy soil, Vermont and Maine to 

 Kentucky and southward. The crushed leaves yield a pleasant anisate odor. 

 But an occasional form, var. INOD6RA, is nearly scentless. 



--*- -*- H- -H- Leaves more or less grayish or hoary, thickish, feather-veined and 

 slightly triple-nerved, obscurely serrate or entire ; heads middle-sized. 



28. S. nemoralis, Ait. Clothed with a minute and close grayish-hoary (soft 

 or roughish) pubescence; stem simple or corymbed at the summit (J-2^ 

 high) ; leaves oblanceolate or spatulate-oblong, the lower somewhat crenate- 

 toothed and tapering into a petiole; racemes numerous, dense, at length re- 

 curved, forming a large and crowded compound raceme or panicle which is 

 usually turned to one side ; scales of the involucre linear-oblong, appressed ; 

 rays 6 -9. Dry sterile fields: very common. Flowers very bright yellow, 

 beginning early in Aug. 



29. S. 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 nearly as in S. nemoralis, of which it is most 

 probably a greener and rough variety. Dry Hills, Western Illinois and south- 

 westward. 



# # # # # Heads in one-sided spreading or recurved racemes, forming an ample 



panicle ; leaves plainly 3-ribbed, or triple-ribbed. 



H- Scales of the involucre thickish and rigid, closely imbricated, and with somewhat 

 greenish tips or midrib : leaves rigid, smooth and shining. 



30. S. Shdrtii, Torr. & Gr. Stem slender, simple (l-3 high), mi- 

 nutely roughish-pubescent ; leaves oblong -lanceolate, acute, the lower sharply 

 serrate above the middle with scattered fine teeth ; racemes mostly short in a 

 crowded panicle ; achenia silky-pubescent. Rocks at the Falls of the Ohio, &c. 

 A handsome species : heads 3" long, narrow. 



31. S. Missouri6nsis, Nutt. Smooth throughout (1- 3 high) ; leaves 

 linear-lanceolate, or the lower broadly lanceolate, tapering to both ends, with 

 very rough margins, the lower very sharply serrate ; heads and dense crowded 

 racemes nearly as in No. 20 ; achenia nearly glabrous. Dry prairies, from Wis- 

 consin and Illinois southward and westward. Heads l|"-2" long. 



