456 OSDEB 70. COMPOSITE. 



branches upright. Lvs. 1 to 2' long. Hds. 4 or 5" diam. Rays about 12, 

 spreading 9 or 10". Apr. Nov. 



4 H. quadridentatum LabilL Smoothish, much branched ; Ivs. oblong, spar- 

 ingly lobed or toothed, the highest lanceolate, entire ; disk oblong, longer than 

 the rays ; pappus scales obtuse. Swamps, Miss., La. to Ark. St. 1 to 3f high, 

 with solitary, terminal, small hds. Lvs. about 4-toothed or lobed. Disk fls. 4- 

 toothed. Jn. Aug. 



66. LEPTOP'ODA, Nutt, (Gr. /ten-roc, slender, -ovf, foot ; alluding 

 to the elongated peduncles.) Heads many-flowered ; rays neutral, cune- 

 ate, 3 4 -cleft; disk | scales spreading, numerous, attenuate; recep- 

 tacle conical; chaff 0; pappus of 6 10-fringed squamoc. 2 North 

 American herbs, with the habit of llelcuium. 



Heads corymbcol, on short peduncle*, Pappus ctispidate-awned No. 1 



Head solitary, on a long peduncle. Pappus awnless. Aohenia glabrous Nos. 2, K 



Achenia hairy Nos. 4, 5 



1 L. brach^poda Torn & Gr. St. leafy, corymbous at summit ; Ivs. decurrent, 

 lanceolate, subentire, the lower toothed, obtuse ; hds. on short peduncles ; scales 

 lance-linear, about half as long as the 812 drooping rays : disk brownish-purple. 

 - Separated from Helenium only on account of its sterile rays. In damp soil, 

 from Southern 111. to Tex. and S. States. Stem about 2f high. Heads several or 

 numerous. Rays broadest at summit, rather deeply and irregularly toothed, 

 7 9'' by 4 5". (Helenium quadridentatum Hook.) 



2 L. Helenium Nutt. Smooth ; Ivs. lanceolate or lance-linear, entire or re- 

 motely denticulate, mostly slightly decurrent, the lowest tapering to a petiole ; 

 pappus awnless, lacerated; ach. glabrous; rays 20 or more in one row. Moist 

 soils, S. Car. to Fla. and La. About 2f high, leafy below, ending in a long, naked 

 stalk, bearing one hd. Lvs. ?> to G' long. Disk 5 to 8'' broad. Mar., Apr. 



3 L. inclsa Torr. Gr. Glabrous ; Ivs. lanceolate, sessile, not decurrent, sinuate- 

 pinnatifld or incised; pappus awnless, lacerated; rays about 40, in 2 or 3 rows; 

 ach. glabrous. Ga. (Lo Conte). 



4 L. pub^rula Macbr. SL clustered, tomentovscr downy, Ivs. lance-linear, oc- 

 casionally toothed or incised, not decurrent; ach. hairy; pappus scales obtuse. 

 N. Car. to Fla. Sts. 1 to 2f high, usually many from one root. Lvs. 2 to 4' long, 

 half-clasping. Rays 20 to 30, broadly wedge-Shaped, spreading 1 to 2'. Apr., 

 May. (H. pinnatifida Nutt.) 



5 L. brevifolia Nutt. Nearly glabrous ; Ivs. all entire or nearly so. the cauline 

 decurrent, the lower oblong-spatulate, obtuse, highest lanceolate, acute; ach. 

 hairy. N. Car. to Ala. St. 1 to Sf high, occasionally branched, aud with more 

 than 1 head. Hd. about as largo os in No. 4. May. Jn. 



67. BALDWIN 'I A, Nutt. (To Dr. William Baldwin, one of our 

 pioneer botanists.) Involucre scales imbricated in 2 to 4 rows, appres- 

 scd, shorter than the disk, inner acute or acuminate ; receptacle con- 

 vex, deeply alveolate with horny walls ; rays 8 to 20, neutral, in one 

 row, narrow-cuneiform, 3-toothed; disk flowers $, tube horny below ; 

 achenia immersed in the cells, silky-villous, crowned with a pappus of 

 9 to 12 oblong scales. 2 Herbs simple or corymbcd, naked above, 

 with alternate, linear, punctate Ivs. and yellow fls. 



X B. uniflora Nutt. Puberulent, simple, I-floivered; hd. about 20-rayed ; pappus 

 9-leaved. Open swamps, Va. to Fla. and La,, near the coast. Plant 1 to 2f high, 

 striate-angled. Lvs. thick, linear-spatulato below, linear and bract-like above. 

 Disk 7 to 8 ' wide, rays narrow, spreading nearly 2'. Cells of the receptacle just 

 like a honey-comb, 2 to 3" deep. Jl. Sept. 



2 B. multiflora Nutt. Glabrous, much branched, with a corymb of fls. ; Ivs. very 

 numerous, narrowly linear ; rays about 10; pappus 1 2-leavcd ; ach. marked with 

 12 rays oa its flat summit. Sand bill,-, Ga., Fla. riant 1 to 3f high, slender, 



