436 ORDER 70. COMPOSITE. 



41 S. OMens.'s Riddcll. Glabrous throughout; lower Ivs. lanceolate, obtuse, 

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

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

 dense, fastigiate 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 8' by 1 1J', on petioles of equal length, middle caul- 

 ine, about 2' by 5". Heads about 6-rayed. Sept., Oct. 



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

 cal Ivs. very long, lance-linear, long-pointed entire, on long, margined, carinate 

 petioles, cauline Ivs. clasping at base, arcuate, carinate, narrow, acute, entire ; 

 branches leafy; hds. 20 24-flowered, densely clustered in a compound, fastigiate 

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

 Radical leaves 12 18' long-, almost grass-like, cauline 3 6' by ', with a strong 

 midvein, and generally much recurved. Kays small, 6 9. Sept. (S. Mexicana 

 ft. Hook.) 



43 S. corymbosa Ell. Stout, glabrous; with the corymbous branches hirsute; 

 Ivs. sessile, oblong-lanceolate, thick, rigid, smooth, the lower and radical subden- 

 tate, upper entire, rough-ciliate ; hds. large, in loose racemes, the outer secund, 

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

 disk-fls. 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. Houghtoiiii 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 ; Ivs. rigid, ovate-oblong, rough with minute 

 hairs, the upper very entire, the lower serrate ; branches corymbous- paniculate, 

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

 obtuse; rays large, 7 to 10, disk-fls. 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 Ivs., of which the radical ones are 

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

 deep-yellow. Aug., Sept. 



43 S. spitham&a Curt. Yillous; Ivs. lance-oval or oblong; thin, smoothish, 

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

 acute; rays 6 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 ; Ivs. linear-lanceolate, 

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

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

 Can. and TJ. S. St. 2 to 4f high, with numerous, very long and narrow Ivs. 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. teiTuifolia Ph. St. angular, smooth, with many fastigiate branches ; Ivs. 

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

 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 extreme 

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

 duced to a few hds. Aug. Oct. 



27. BIGEUTYIA, DC. (In honor of Dr. Jacob Bigelow, 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 one 

 series. 2 Glabrous, slender. Lvs. alternate, entire. Hds, lastigiately 

 corymbous, with yellow fis. and colored scales. 



