174 COMPOSITE. 



3-nerved, subfalcate and spreading, hairy beneath ; peduncles few, in ax- 

 illary corymbs and with the involucre villous. C. Mariana, var. Nutt. 

 Inula falcata Pursh. 



Sandy fields. Mass. Conn. N. Y. and N. J. Sept., Oct. %.Stem 612 

 inches high, leafy. Heads in a simple or compound corymb, small, bright yel- 

 low ; rays about 12, oblong. Falcate Chrvsopsis. 



18. BIGELOWIA. D. C. Bigelowia. 



(In honor of Dr. J. Bigelow, of Boston, author of the Flor. Bostoniensis.) 



Heads 3 5 -flowered ; the flowers all tubular and perfect. 

 Receptacle narrow, pointed by a hyaline or scale-like cusp as 

 long as the achenia. Involucre clavate-cylindric, imbricate; 

 the scales linear, appressed and somewhat glutinous. Achenia 

 somewhat obconic, hairy. Pappus a single series of rough 

 capillary bristles. 



B. virgata D. C.: herbaceous, smooth ; stem virgately branched ; 

 branches corymbiferous, fastigiate ; leaves narrow-linear, nerveless ; heads 

 oblong, 3 4-flowered ; scales of the involucre glutinous and appressed. 

 13. nudata,va.r. virgata Torr. <$ Gr. Chrijsocoma virgata Nutt. 



Swamps. N. J. to Flor. Aug. Oct. 1\.. Stem about 18 inches high and 

 branched nearly from the base. Leaves short and narrow, scattered, smooth 

 and thickish ; the radical ones broader and longer. Florets bright yellow. Re- 

 sembles Solidago lenuifolia Pursh. Virgate Bigeknuia. 



19. SOLIDAGO. Linn. Golden-Rod. 



(From the Latin solidari, to unite; on account of its reputed healing qualities.) 

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

 or sometimes wanting ; those of the disk tubular, perfect. Re- 

 ceptacle narrow, naked or alveolate. Involucre oblong; the 

 scales imbricate, appressed. Achenia many-ribbed, somewhat 

 terete. Pappus in a single series, pilose, scabrous. Flowers 

 yellow (except in S. bicolor.) 



* Scales of the involucre imbricate, free. Rays ligulate, fewer than the 

 disk flowers. Receptacle naked or alveolate, not Jimbrillate. Racemes pan- 

 iculate or simple, not corymbose. VIRGAUREA Tourn. 



f Racemes secund, someiuhat recurved. 

 1. Leaves 3-nerved. 



1. S. CanadensisLinn.. stem villous; leaves lanceolate-serrate, 3-nerved, 

 scabrous above, pubescent beneath ; racemes paniculate, secund, recurved ; 

 heads small ; rays short. 



Fields and woods. Can. to Flor. N. to Subarct. Amer. W. to Oregon. Aug., 

 Sept. %. Stem 2 5 feet high, very villous. Leaves large, always scabrous on 

 the upper side. Heads very small ; rays 7 8. Of this very variable species, 

 <S. procera Ait. S. scabra Willd., are probably nothing more than varieties. 

 <S. reflexa Ait. and S. laterijlora Linn., are also allied to it; but according to 



