174 ' COMPOSITE. 



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

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

 Inula falcata Pursh, 



Sandy fields. Mass. Conn. N. Y. and N. J. Sept., Oct. %.—Stem 6—12 

 inches liigh, 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. 

 n. midata,ya.x. virgata Torr. d^ Gr. Chrysocoma virgata Nutt. 



Swamps. N. J. to Flor. Aug. — Oct. 11. — 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- 

 eembles Solidago ienui/olia Pursh. Virgate Bigelotvia. 



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. hicolor.) 



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

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

 iculate or simple, not corymbose. Virgaurba Tourn. 



f Racemes secund, somewhat recurved. 



1, Leaves 3-nerved. 



1. )S. Canadensis Linn. . 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. lateriflora Linn., are also alUed to it; but according to 



