226 



COMPOSITjE. Soliuago. 



§ 4. Herbaceous, much branched, fastigiate-corymhose : scales of the involu- 

 cre much af pressed, somewhat glutinous: receptacle fimbrillate: rays 

 (6-20) more numerous than the disk- flowers, very small : achenia oblong, 

 villous-pubescent : heads in corymbose clusters, mostly fascicled : leaves line- 

 ar, entire, l-5-nerved, sessile. — Euthamia, Nutt. 



69. 5. lanceolata (Linn.): stem much branched, fastigiate; the branches 

 (at least the angles), with the nerves and margins of the lanceolate-linear 

 3-5-nerved leaves minutely scabrons-pubescent; heads obovoid-cylindrical, 

 in dense corymbose clusters, sessile ; scales of the involucre obtuse, oblong 

 or lanceolate, the innermost linear; flowers of the disk 8-12; the minute 

 rays \b-2Q.—Linn.! mant. p. 114; AiU! Kew. {ed. 1) 3. p. 214; Michx.! 

 fi. 2. p. 116 (a. major) ; Pursh, fl. 2.' p. 405 ; Bigel. fl. Bost. ed. 2. p. 301 ; 

 Hook. ! fl. Bor.-Ain. 2. p. 6 (partly) ; Darlingt.! fl. Cest. p. 461. S. gra- 

 minifolia. Ell! sk. 2. p. 391; DC..' prodr. 5. p. 341. Euthamia grami- 

 nifolia, Nutt. ! gen. 2. p. 162, &f in trans. Amer. j^hil. soc. I. c. Chrysoco- 

 ma graminifolia, Linn. spgc. 2. p. 841. 



Fields and borders of thickets, Canada ! (from Subarctic America) and 

 nearly throughout the United States. Aug.-Oct.— Stem 2-4 feet high, stri- 

 ate-angled, usually scabrous-puberulent. Leaves sometimes broadly lanceo- 

 late-linear (3-5 inches long) and 5-nerved (the lateral nerves more slender), 

 sometimes narrow and indistinctly 3-nerved, numerous, but not fascicled in 

 the axils. Heads one-fourth to one-third of an inch in length. Receptacle 

 setose-fimbrillate. 



70. S. ienuifolia (Pursh): glabrous or slightly scabrous; stem much 

 branched, fastigiate; leaves very narrowly linear, spreading, _ 1- (rarely 

 somewhat 3-) nerved, punctate with resinous dots ; heads obovoid or turbi- 

 nate, in loose corymbose clusters, mostly in glomerules of 2 or 3, sometimes 

 pedicellate ; rays 6-12, slightly exserted ; the disk-flowers b-Q.— Pursh, fl. 

 2. p. 540 ; Ell.! sk. 2. p. 392 ; DC. prodr. 5. p. 341. S. lanceolata /3. 

 minor, Michx. ! I. c. Euthamia tenuifolia, JSutt. ! I. c. 



Sandy fields, &c. from the coast of Massachusetts ! and New York ! to 

 Florida ! and Louisiana ! Aug.-Oct.— A more slender plant than the pre- 

 ceding, with the heads smaller, and less glomerate. Leaves 1 to nearly 3 

 inches long, one line or less in width, sprinkled with resinous atoms, often 

 fascicled in the axils. When the corymb is reduced to few heads, these are 

 commonly pedicellate. The species "is variable, and some states nearly ap- 

 proach S. lanceolata. 



71. S. leptocephala : very smooth ; stem densely fastigiate-corymhose at 

 the summit; leaves lanceolate-linear, 1-nerved, or obscurely 3-nerved; 

 heads narrow, cylindrical-clavate, in compound corymbose clusters, mostly 

 fascicled and sessile at the apex of the peduncles ; scales of the involucre 

 linear; rays 8-10, very small; the disk-flowers 3 or 4. 



Western Louisiana, Dr. Leavenworth! Dr. Hale! Texas, Drummond !— 

 Stem apparently strict and nearly simple, except at the summit. Leaves 

 crowded, but not fascicled, 2-3 inches long, 2-3 lines wide, with a strong 

 midrib and usually 2 obscure lateral nerves, pellucid-punctate, as in the 

 allied species, but not sprinkled with resinous atoms, not glutinous. Heads 

 very numerous and slender. Rays mostly shorter than the disk-flowers. 

 P4,eceptacle conical, fimbrillate. 



72. S. occidentalis (Nutt. under Euthamia) : very smooth, loosely 

 branched, somewhat paniculate ; leaves narrowly lanceolate-linear, obscure- 

 ly 3-nerved ; heads in small corymbose clusters, pedicellate; scales of the 

 many-flowered involucre linear-lanceolate, acute. — S. lanceolata, Cham. Sf 



