342 



COMPOSITAE. 



[Vol. III. 



Solidago jiincea ramosa Porter and Britton, Bull. Torr. Club, 18:368. 1891. 

 Much branched at the summit, the branches slender, erect, slightly curved, the heads in short 

 small racemes. Maine to Western New Jersej-, West Virginia and Ohio. 



32. Solidago arguta Ait. Cut- 

 leaved Golden-rod. (Fig. 3702.) 



Solidas:oargula Ait. Hort. Kew. 3: 21 1,. 1789. 

 a. Muhlenbergiit. ik. G. 1"1. N. A. 2: 214. 1841. 



Stem simple, rather stout, glabrous, or 

 sparingly pubescent above, 2°-4° high. 

 Leaves thin, pinnately veined, the lower 

 and basal ones broadly ovate or oval, short- 

 acuminate, 3'-! 6' long, i'-5'widc, narrow- 

 ed into margined petioles, sharply and 

 coarsely serrate; upper leaves sessile, ovate 

 to oblong, acute or acuminate, more or less 

 serrate, smaller; heads 2'. "-3^" high, 

 secund on the lateral racemose branches 

 of the terminal, often leaf}' panicle; rays 

 5-7, large; bracts of the involucre oblong, 

 obtuse; achenes glabrous or nearly so. 



In rich woods, Ontario and New England 

 to Ohio, south to Virginia. Ascends to 2700 

 ft. in the Adirondacks. July-Oct. 



33. Solidago rupestris Raf. Rock 

 Golden-Rod. (Fig. 3703.) 



Solidago itifiesliis Raf. .\nn. Nat. 14. 1S20. 



Stem slender, glabrous, or minutely pubes- 

 cent above, 2°-3° high. Leaves thin, triple- 

 nerved, linear-lanceolate, 2'-$' long, 3"-5" 

 wide, entire, or sparingly serrate with some- 

 what appressed teeth, acuminate at the apex, 

 narrowed at the base, sessile, or the lowest pet- 

 ioled, glabrous; heads small, I'/i" high, secund 

 on the short spreading branches of the small 

 panicle; rays 4-6, short; bracts of the involucre 

 thin, linear; achenes small, nearly glabrous. 



Rocky banks of streams, Penns5'lvania to West 

 Virifinia, Tennessee and Indiana. Aug. -Sept. 



34. Solidago serotina Ait. Late 

 Golden-rod. (Fig. 3704.) 



Solidago serotina Ait. Hort. Kew. 3; 211. 1789. 

 5. !;i!ranlea Willd. Sp. PI. 3: 2056. 1804. Not Ait. 

 1789. 



Stem stout, 3°-S° high, glabrous, sometimes 

 glaucous. Leaves lanceolate or oblong lanceo- 

 late, thin, triple-nerved, sharply serrate, or 

 rarely nearly entire, sessile, or the lowest peti- 

 oled, glabrous on both sides but more or less 

 rough-margined, 3'-6' long, i"-\i" wide, 

 acuminate at the apex, narrowed at the base; 

 heads '2.]i,"--^%" high, crowded on the spread- 

 ing or recurving branches of the usually large 

 and often leafy panicle, which are sometimes 

 puberulent; bracts of the involucre oblong, 

 thin, obtuse; rays 7-15, rather large; achenes 

 finely pubescent. 



In moist soil. Newfoundland to British Columbia, 

 Ascends to 2300 ft. in Virginia. Aug. -Oct. 



south to Georgia, Texas, Nevada and Oregon. 



