Genus 22.] 



THISTLE FAMILY. 



343 



Solidago serotina gigantea (Ait.) A. Gray, Proc. Am. .\cad. 17: iSo. 1S82. 

 Solidago giganlea .\it. Hort. Kew. 3: 211. 1789. 



Leaves hispidorpubescent on the lower surface, at least on its prominent veins. With the type. 



35. Solidago Missouriensis Nutt. 

 Missouri Goldeu-rod. (Fig. 3705.) 



Solidago Missouriensis Nutt. Joum. Acad. Pliila. 7; 



32- 1*34- 



Stem glabrous, rather slender, 3°-5° high. 

 Leaves firm or thick, those of the stem linear- 

 lanceolate and sessile, acuminate at the apex, 

 narrowed at the base, 2'-4' long, very rough- 

 margined, triple-nerved, entire, or sparingly ser- 

 rate with low sharp teeth, the basal and lowest 

 ones larger, spatulate, petioled; heads 2%"-^" 

 high, secund ou the spreading or recurving 

 branches of the short and broad, usually naked 

 panicle; bracts of the involucre oblong, greenish- 

 tipped, obtuse, or the inner acute, thick; rays 

 6-13, short; achenes nearly glabrous. 



On dry prairies, Manitoba and Minnesota to Ten- 

 nessee, west to Nebraska, Washington, Jlissouri and 

 Texas. Autumn. 



36. Solidago Shortii T. & G. 

 Short's Golden-rod. (Fig. 3706. ) 



SoUdago S/ior/ii T. & G. Fl. N. A. 2: 222. 1841. 

 Stem slender, glabrous below, minutely 

 pubescent above, 2^-4° high. Leaves firm, 

 oblong-lanceolate, sessile (the lowest peti- 

 oled?), triple-nerved, acute or acuminate at 

 the apex, glabrous on both sides, the larger 

 2'-4' long, 5"-6" wide, sharply serrate with 

 rather small and distant teeth, the upper 

 gradually smaller, sparingly serrate, or en- 

 tire; heads about 3" high, secund on the 

 usually recurved branches of the com- 

 monly large puberulent panicle; involucre 

 narrowly campanulate, its bracts linear-ob- 

 long, obtuse; rays 5-7, rather small; achenes 

 silky-pubescent. 



On rocks at the Falls of the Ohio river and 

 in northwestern Arkansas. July-Aug. 



37. Solidago Gattiinger Cliapin. 

 Gattinger's Golden-rod. (Fig. 3707.) 



Solidago Gattingeri Chapm.; A. Gray, Syn. Fl. i: 

 Part 2, 156. 1884. 



Stem slender, 2°-3° high, branched at the 

 inflorescence, glabrous throughout. Leaves firm, 

 glabrous beneath, rough above, ciliolate, the 

 lower and basal ones oblanceolate or spatulate, 

 acutish, 3'-6' long, 6"-io" wide, serrate with 

 low distant teeth, narrowed into margined 

 petioles; upper leaves abruptly smaller, linear- 

 oblong or oblanceolate, bract-like, entire, sessile; 



heads i"-iyt" high, somewhat secund on the 

 spreading, often very slender and elongated 

 branches of the panicle; bracls of the involucre 

 oblong, very obtuse; rays 6-10; achenes puberu- 

 lent, or glabrous below. 



In dry soil, Tcnnessee'and Missouri. 7 July-.\ug. 



