SoLiDAGO. LXXV. COMPOSITE. 3S9 



those of the upper part of the stem very entire, lower ones serrate ; jlowering 

 lyranches paniculate, with close, short racemes ; rays elongated ; infolticre scales 

 obtuse. — A tall species, in dry fields and rocky woods, Ct. to Mo. and Tex. 

 Abundant in the western prairies ! Stem 3 — 5f high, round, striate, with rigid 

 leaves, of which the radical ones are sometimes near a foot long. Heads 

 larger than in any other species described in this Flora. Rays 7 — 9, about 

 3" by 1", deep yellow. Aug. Sept. 



4. S. Ohiensis. Riddell. 



Glabrous ; loiver Ivs. lanceolate, obtuse, entire or sen-ulate above, tapering 

 to long petioles, upper oblong-lanceolate, abruptly acute, sessile, entire ; Ms. 

 numerous, 15 — 20-flowered, rather large, in a dense, fastigiate corymb. — Mead- 

 ows and prairies, western N. Y. to la. ! A perfectly smooth species, 2 — Sfhigh. 

 Stem simple, reddish, leaty. Leaves of a firm textiu-e, the radical 6 — 8' by 

 1 — IJ', on petioles of equal length, middle cauline, about 2' by 5". Heads 

 about G-rayed. Sept. Oct. 



5. S. RiDDELLii. Frank. (S. Mexicana. /3. Hook.) Riddell's Solidago. 

 Stout and nearly glabrous, corymbosely branched ; radical ivs. very long, 



lance-linear, entire, acute, on long, margined, carinate petioles, cauline Ivs. 

 clasping at base, arcuate, carinate, narrow, acute, entire ; branches leafy ; hds. 

 20 — 24-flo\vered, densely clustered in a compound, fastigiate corymb. — Wet 

 prairies Ohio ! Wis. to Mo., not uncommon. A well marked species, 15 — 30' 

 high. Radical leaves 12 — 18' long, almost grass-like, cauline 3 — 6' by \' , with 

 a strong mid-vein, and generally much recurved. Rays small, 6 — 9. Sept. 



§ 3. Heads in glomerate., axillary clusters. 



6. S. saUARRosA. Muhl. Ragged Goldenrod. 



St. stout, simple, erect, thickly pubescent above ; Ivs. smooth, lower ones 

 very broad, oval-spatulate, serrate, acute, upper ones lanceolate-elliptic, high- 

 est, entire ; rac. glomerate, rigid and pubescent ; scales squarrose with spread- 

 ing green tips; hds. many-flowered; rays 10 — 12, elongated. — A handsome spe- 

 cies, found on rocky hills. Can. to Penn. Stem 3 — 5f high. Heads very 

 large, forming a long terminal spike of short, dense, axillary fascicles or ra- 

 cemes. Sept. 



7. S. c^siA. Ait. (S. axillaris. Ph.) Blue-stemmed Goldenrod. 



St. erect, round, smooth and glaucous, often flexuous ; Ivs. smooth, linear- 

 lanceolate, lower ones serrate ; rac. axillaiy, erect. — A very elegant species, in 

 thickets and dry woods. Can. and U. S. Stem 1 — 3f high, of a bluish-purple 

 color, terete and slender, somewhat flexuousj simple or branched. Leaves 

 2 — 5' long, ending in a long point, sessile, glaucous beneath. Racemes axilla- 

 ry, numerous, short. Flowers of a deep, rich yellow. Rays 5 — 7, once and a 

 half the length of the involucre. Aug. 



0. Jlexicaidis. (S. flexicaulis. Ph. not of Linn.) St. flexuous, angular; Ivs. 

 ovate-lanceolate, longer than the subcapitate racemes. — Leaves about 2' by V- 

 Rays pale yellow. 



8. S. LATiFOLiA. Muhl. (S. macroph)'lla. Bw. S. flexicaulis. 0. Ph.) 

 St. somewhat flexuous, angular, smooth ; Irs. broadl)^ ovate, acuminate 



at each end, deeply serrate, smooth ; petioles marginal ; rac. axillary and ter- 

 minal.— A singular and very distinct species, common in dry woods and by 

 rocky streams, U. S. and Can. Stem slender, not always perfectly smooth, 

 about 2f high. Leaves 3 — 5' by 2 — 4', with acute, often long-acuminate serra- 

 tures. Clusters very short, axillary, the stem ending with a long terminal one. 

 Heads few. Sept. 



9. S. BicoLOR. (Aster bicolor. Nces.) Two-colored Goldenrod. 



Hairy ; st. simple ; tvs. elliptical entire, acute at each end, lower ones .ser- 

 rate, short-stalked; rac. short, dense, leafy, erect; invol. scales obtuse. — In 

 woods and dry hills. Can., N., Mid. & W. States. A species remarkably dis- 

 tinguished among the solidagos by having white rays. Stem generally simple, 

 2f high, a little hairy. Leaves hairy on both sides, mostly entire, gradually re- 

 duced in size upwards. Flowers in numerous close, short, axillary clusters. 



