436 Order 70.— COMPOSITE. 



41 S. Olsiensis Riddcll. Glabrous throughout; lower lvs. lanceolate, obtns?, 

 entire or serrulate above, tapering to long petioles, upper oblong-lanceolate, ab- 

 ruptly acute, sessile, entire; hds. numerous, 15 — 20-Howered, rather large, in a 

 dense, fastigiato corymb. — Meadows and prairies, western N. Y. to Ind. A per- 

 fectly smooth Solidago, 2 — 3f high. Stem simple, reddish, leafy. Leaves of a 

 firm texture, the radical 6 — 3' by 1 — l.V', on petioles of equal length, middle caul- 

 ine, about 2' by 5". Heads about G-rayed. Sept., Oct. 



42 S. Riddellii Frank. Stout and nearly glabrous, corymbously branched ; radi- 

 cal lus. very long, lance-linear, long-pointed entire, on long, margined, carirato 

 petiobs, cauline lus. clasping at base, arcuate, carinate, narrow, acute, entire ; 

 branches leafy ; hds. 20 — 24-flowerecl, densely clustered in a compound, fastigiato 

 corymb. — Wet prairies Ohio, "Wis. to Mo. A well marked species, 15 — 30' high. 

 Radical leaves 12 — 18' long, almost grass-like, cauline 3 — G' by -J', with a strong 

 tnidvein, and generally much recurved. Rays small, G — 9. Sept (S. Mexicans 

 (3. Hook.) 



43 S. corymbdsa Ell. Stoiit, glabrous; with Hie corymbous branches hirsute; 

 lvs. sessile, obloug-lanceolate, thick, rigid, smooth, the lower and radical subden- 

 tat?, upper entire, rough-ciliato ; lids, large, in loose racemes, the outer secund, 

 forming a fastigiato corymb; scales pubescent, oblong, obtuse; rays about 10, 

 disk-As. about 20 ; ach. glabrous. — Middle Ga. Plant 4 to Gf high, differing from 

 S. rigida in its smooth stem and leaves, smaller hds., &c. Sept., Oct. 



44 S. Houghtonii Torr. & Gr. Like S. Ohiensis, but smaller, with a few very 

 large hds., — found in Northern Mich, in the State Survey. Aug. 



45 S. rigida L. Stout, rough-hairy ; lvs. rigid, ovate-oblong, rough with minute 

 hairs, the upper very entire, the lower serrate ; branches coryrnbous-panieulate, 

 with close, short racemes, the lower somewhat secund ; hds. very large ; scales 

 obtuse; rays large, 7 to 10, disk-As. 25 or more; ach. glabrous. — A rough plant 

 in dry fields and rocky woods, Ct. to Mo. and Tex. Abundant in western prai- 

 ries. St. 3 to 5f high, round, striate, with rigid lvs., of which the radical ones are 

 sometimes near a foot long. Hds. 4 to 5" long and wide. Pays about 3" by 1", 

 deep-yellow. Aug., Sept. 



46 S. spithamEea Curt. Villous; lvs. lance-oval or oblong; thin, smoothish, 

 sharply serrate, margin ciliate ; hds. middle size, corymbous; scales lanceolate, 

 acute; rays G to 8, disk-fls, 15 to 20; ach. pubescent. — High Mts. of N. Car. 

 (Curtis). A low plant, growing in tufts, with hairy stems, branches and corymbs, 

 and inconspicuous rays. Aug., Sept. 



47 S. lanceolata Ait. St. angular, hairy, much branched ; lvs. linear-lanceolate, 

 entire, 3-veincd, rough-margined, slightly hispid on the veins beneath; corymbs 

 terminal, fastigiato ; rays minute, about 17, disk-fls. 10. — In woods and meadows, 

 Can. and U. S. St. 2 to 4f high, with numerous, very long and narrow lvs. which 

 are distinctly 3 veined and acutely pointed, smaller ones often fascicled in the 

 axils. Fls. in terminal, crowded, corymbed clusters. Invol. ovate. The whole 

 plant is fragrant. Sept. 



48 S. tentiifolia Ph. St. angular, smooth, with many fastigiato branches ; lvs. 

 narrowly linear, spreading, mostly 1-veined, scabrous on the margin, the axilr, 

 leafy; corymb terminal, consisting of clustered hds. ; rays about 10, scarcely as 

 long as the disk. — Meadows near the sea-coast, Mass. to La. Also Wis. (Lap- 

 ham.) A very slender species, distinguished from S. lanceolata by the extremo 

 narrowness of the leaves and the thinner, moro open corymb, which is often re- 

 duced to a few hds. Aug. — Oct. 



27. BIGEUTVIA, DC. (In honor of Dr. Jacob Blr/clota, the well- 

 known author of " Florula Bostonicnsis," etc.) Heads discoid, 3 to 4- 

 flowered, the flowers all tubular, $ ; involucre cylindrical, as long as 

 the flowers ; scales rigid, linear, closely imbricated ; receptacle pointed 

 by a scale-like cusp; achenia obconic, hirsute; pappus bristles in ono 

 series. — 2T. Glabrous, slender. Lvs. alternate, entire. lids, fastigiately 

 corymbous, with yellow fls. and colored scales. 



