276 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



8. CHRYSOPSIS Ell. 

 1. Chrysopsis mariana (L.) Ell. Golden aster. 



Fields or open woods; common, Aug.-Oct. Eastern U. S. 



A specimen of Chrysopsis gossijpina (Michx.) Ell. was collected along the railroad 

 at Silver Springs, Sept. 1934 (/. H. Painter). This species ranges from Va. to Fla., 

 and is doubtless adventive here. 



9. SOLIDAGO L. Goldenrod. 



Heads in small clusters in the axils of the leaves, the leaves much longer than the 

 clusters; stems glabrous. 

 Leaves rounded-ovate, ovate, or broadly elliptic, abruptly narrowed at the base 

 into a winged petiole; teeth of the leaves long, spreading; stem angled. 



1. S. flexicaulis. 

 Leaves lanceolate or narrowly oblong-lanceolate, sessile, the teeth low, appressed; 



stem round 2. S. caesia. 



Heads all or mostly in broad or narrow panicles, in one species in corymbs, clusters 

 of heads sometimes present also in the axils of some of the leaves; stems glabrous 

 or pubescent. • 



Leaves all entire, anise-scented , . . .8. S. suaveolens. 



Leaves all or at least the larger ones with large or small teeth, not anise-scented. 

 Stems glabrous up to the inflorescence, the branches of the panicle often pubes- 

 cent. 

 Leaves very hairy beneath with long or short hairs, often very rough on the 

 upper surface. Heads in long slender one-sided racemes. 

 Leaves 3-nerved, 2 of the lateral nerves much stronger than the others. 



16a. S. serotina gigantea. 

 Leaves pinnately nerved, the lateral nerves all alike or nearly so. 



10. S. ulmifolia. 

 Leaves glabrous beneath, or rarely with a few scattered hairs along the princi- 

 pal nerves, smooth on the upper surface. 

 Margins of the leaves smooth; plants growing on rocks. Heads large, 7-8 



mm. long, in very narrow panicles 7. S. racemosa. 



Margins of the leaves rough with very short thick hairs; plants growing in 

 soil. 

 Heads large, 5.5-8 mm. long (from base of involucre to top of disk), not in 



one-sided racemes; lower leaves mostly obtuse 5. S. erecta. 



Heads smaller, usually decidedly less than 5.5 mm. long, but sometimes 



6 mm. long, arranged in one-sided racemes; leaves all very acute. 

 - Leaves linear-lanceolate, the largest ones 1.3 cm. wide and most of them 



narrower, 3-nerved; heads about 3.5 mm. high 14. S. rupestris. 



Leaves lanceolate or broader, most of them over 1.5 cm. wide, usually 

 2-4 cm. wide. 

 Leaves 3-nerved (that is, 2 of the lateral nerves much stronger than 



theothers). Heads 3.5-4 mm. high 16. S. serotina. 



Leaves pinnately nerved, the lateral nerves all alike. 

 Leaves all sessile, mostly ovate or elliptic and less than 3 times as 



long as broad, rarely longer; plants with stolons. 



11. S. elliottii. 



Leaves, at least the lowest ones, narrowed to winged petioles, usually 



lanceolate and 4 times as long as broad or often much longer; 



plants without stolons. 



Heads 5-5.5 mm. high, the branches of the panicle short (usually 



5 cm. or less) and stout; petioles of the lower leaves sheathing 



the stem 12. S. neglecta. 



