156 COMPOSITE. Solidago. 



Var. extraria, Gray, 1. c. Afoot or two high, robust:- leaves broader (the largest 

 sometimes an inch wide), sparingly serrate or entire : heads rather larger : rays more con- 

 spicuous. — Dry ground, in the mountains, Colorado to S. Arizona, Parry, Hall & Harbour, 

 Greene, Pringle, Lemmon, &c. 



S. Gattingeri, Chapm. ined. Slender, mostly strict and barely 2 feet high : branches and 

 inflorescence perfectly smooth and glabrous: leaves ciliolate; lowest cauline and radical 

 lanceolate-spatulate, appressed-serrulate, obviously triplinerved ; upper cauline mainly entire 

 and without lateral ribs, oblong-lanceolate and an inch or so long, and the upper reduced to 

 half or quarter inch, but near the inflorescence very small and bract-like : racemiform clus- 

 ters of small heads open and spreading, not recurving, disposed to form a corymbiform very 

 naked panicle : involucral bracts obloug, very obtuse, yellowish in the dried plant : flowers 

 15 to 20 in the head : akenes appressed-puberulent or the lower part glabrous. — <S. Missouri- 

 ensis, var. pumila, Chapm. Fl. Suppl. 627. — Eocky barrens and cedar glades, Rutherford Co., 

 Tennessee, Gattinger. Between the preceding and the following. 



S. Shortii, Toer. & Gray. Slender, 2 to 4 feet high : upper part of stem and flowering 

 branches scabrous with minute appressed puberulence : leaves bright green, oblong-lanceo- 

 late, rather short (longer only 2 or 3 inches long, toward the inflorescence moderately 

 reduced), acute, mostly with a few small serratures: panicle oblong or pyramidal; its 

 racemiform clusters commonly slender and soon recurving : heads narrow, 10-14-flowered : 

 involucral bracts narrowly oblong : akenes pubescent. — Fl. ii. 222. — Rocks, at the Falls of 

 the Ohio, near Louisville, Rafinesque, Short. N. W. Arkansas, F. L. Harvey. 



b. Leaves with entire and smooth margins: rays larger. 

 S. Marshalli, Rothr. Tall (only the upper part of stem known), slender : leaves linear- 

 lanceolate, acute ; the lateral ribs mostly obscure : panicle naked, of loose recurving racemes ; 

 the rhachis and slender pedicels setaceously bracteate : heads 3 lines long, rather broad : 

 bracts of the involucre broadish, of firm texture, mostly greenish on the back : rays about 8, 

 and disk-flowers more numerous: akenes pubescent. — Rothrock in Wheeler Rep. vi. 146. 



— Mountains of S. Arizona, near the Chiricahua Agency, Lieut. Marshall. 



= = Leaves thinner, sometimes membranaceous : bracts of the involucre chiefly linear, obtuse : 

 branches and upper part of the stem not rarely scabrous-puberulent or minutely hairy. 



S. Leavenworthii, Tore. & Gray. Stem strict, slender, rigid, 2 to 4 feet high, scabro- 

 puberulent even to below the middle: leaves mostly linear (3 or 4 inches long and as many 

 lines wide), very sharply and finely serrate, both ribs and veins inconspicuous : heads 3 lines 

 long, in an ample open panicle : involucral bracts thin, linear, obtuse : rays 10 or 12, small. 



— Fl. ii. 223; Chapm. Fl. 214. — Damp soil, Florida to S. Carolina, near the coast, Leaven- 

 worth, Chapman. 



S. rupestris, Raf. Stem lax, 2 or 3 feet high, smooth nearly to the small panicle : leaves 

 membranaceous, linear-lanceolate, sparsely and sharply serrulate or denticulate, or the upper 

 entire (1 to 3 inches long) : heads very small (barely 2 lines long) : rays 4 to 6, small. — 

 Ann. Nat. 14; Torr. & Gray, Fl. ii. 225. — Rocky banks of streams, along the Ohio River, 

 Kentucky, Indiana, and Western Virginia. Probably only an extreme glabrous form of 

 S. Canadensis. 



S. serotina, Ait. Stem stout, 2 to 7 feet high, very smooth and glabrous up to or near 

 the ample panicle, sometimes glaucous : leaves commonly ample, lanceolate or broader (3 to 6 

 inches long), sharply and saliently. serrate, in the typical plant glabrous both sides : heads 

 crowded, rather large and full (3 lines long) : rays 7 to 14, moderately large and conspicuous : 

 bracts of the involucre broadly linear or linear-oblong. — Few. iii. 211; Gray, Proc. Am. 

 Acad. xvii. 179, 196. S. gigantea, Willd. Spec. iii. 2056, and subsequent authors. <S. glabra, 

 Desf. Cat. ed. 3, 402 ; DC. Prodr. v. 331. S. fragrans, Hort. Par., not Willd. S. Pitched, 

 Nutt. Jour. Acad. Philad. vii. 101, & Trans. Am. Phil. Soc. 1. c. 326, forms with broad and 

 comparatively short leaves and rather smaller heads. 5. elongata, var., Torr. & Gray, 1. c., in 

 part. — Moist or rich soil, Newfoundland to Brit. Columbia, Oregon, and south to Texas. 

 Passes insensibly into 



Var. gigantea, Gray, 1. c. Commonly tall, 5 to 8 feet high : leaves with the lateral 

 ribs more prominent beneath, and these more or less pilose-pubescent or hispidulous, 

 sometimes the veins or even the whole under surface pubescent. — S. gigantea, Ait. 1. c. 

 S. serotina, Willd. ; Torr. & Gray, etc. — Chiefly 'in the Atlantic States, from Canada to 



