356 COMPOSIT.E. Erigeron. 



Rays commonly white, but sometimes pale rose-color. Achenia slightly hairy. Inner pappus 

 of the ray usually wanting ; of the disk consisting of few slender deciduous bristles : outer 

 pappus very short, setaceous-squamellate. 



Fields and meadows ; very common. July - September. Similar in its medicinal 

 properties to the preceding. 



Dlv. 2. ChrtsocohEjE, DC. Heads either heterogamous and radiate, or homogamous and discoid ; 

 the rays and disk-flowers yellow and unchanging. Receptacle never chaffy. 



11, SOLID AGO. Linn.; DC. prodr. 5. p. 330. golden-rod. 



[From the Latin, solicU), to unite or make firm ; in allusion to its supposed vulnerary qualities.] 



Heads usually small, few- or many-flowered ; the ray-flowers few, or sometimes wanting ; 

 those of the disk tubular, perfect. Involucre oblong ; the scales imbricated, appressed, 

 destitute (except in § 1.) of foliaceous or herbaceous tips. Receptacle narrow, mostly 

 alveolate. Appendages of the styles lanceolate. Achenia many-ribbed, somewhat terete. 

 Pappus simple, of numerous rough capillary bristles. — Perennial herbs, with sessile 

 alternate cauline leaves ; the radical ones never cordate. Heads in terminal or axillary 

 racemes or clusters, sometimes corymbose ; the pedicels often unilateral. Flowers yellow 

 (except in S. bicolor). 



§ 1. Chrysastrum, Terr & Gr. Rays 12 - 16, or entirely wanting : scales of the involucre with 

 squarrose herbaceous tips : pappus unequal ; some or all of the inner bristles thickened at the 

 apex : leaves large. 



1. SoLiDAGo SQUARROSA, MuM. Squarrose Golden-rod, 



Stem smooth below, very pubescent above ; leaves smoothish, spatulate-oblong, acute, 

 serrate ; upper ones sessile, lower narrowed at the base into a margined petiole ; heads (large) 

 in dense axillary glomerate racemes or spikes ; scales of the involucre minutely pubescent, 

 with conspicuous recurved-spreading tips; rays 12 - 16; achenia smooth. — Muhl. cat. 

 p. 79 ; Nutt.gen. 2. p. 161 ; Torr. compend. p. 305 ; Beck, hot. p. 193; Darlingt.Jl, Cest. 

 p. 459 ; DC. prodr. 3. p. 337 ; Torr. 4- Gr. fl. N. Am. 2. p. 196. S. confertiflora, Nuf.t. 

 in jour. acad. Phil. 7. p. 102 ; Hook. fl. Bor.-Am. 2. p. 4, not of DC. 



Stem 2-4 feet high, stout, simple. Lower leaves 4-6 inches long and 2 inches or more 

 in breadth, veiny, acute, rather thick, the veins and margin pubescent ; petiole of the 

 radical ones 2-3 inches long. Heads of flowers much larger than in most of the following 

 species, in rigid axillary clusters, forming a large leafy compound spike. Scales of the 

 involucre puberulent, ciliate on the margin. Rays bright yellow, rather elongated. 



Rocky hill-sides, from the highlands of the Hudson uorth and west ; rare, August - 

 September. A well-marked species. 



