ORDER 70. COMPOSITE. 193 



tf N. crepldineiis DC. Smoothish, tall, stout, corymb.-paniculate ; Ivs. broadly tri- 

 aug.-ovate to lanceolate, toothed, petiolate ; hds. nodding, of 12 sc. and 25 35 ochro- 

 leucousfls. Fields, thickets, W. States. 5 Sf. Larger than any of the foregoing. Sept. 



109. LYGODESMIA, Don. Invol. fls., &c., as in Nabalus. Pappus 

 whitish Corollas rose-colored. U With linear-subulate leaves and erect 

 heads on long, naked peduncles. 



1 L. aphylla DC. St. scape-like, erect, slender, forked above ; Ivs. nearly all r&tiicai, 



f tiort, linear-flliforra ; heads 5-flowered. Pine woods, Ga. Fla. 2f. May. 



2 L. jitiicea N. St. much branched ; Ivs. lance-linear ; fls. 5. Min. (Matthews), and W. 



110. TROXIMON, Nutt. Hds. many-flowered. Invol. campanulate, 

 scales loosely imbricate, in 2 3 rows. Gyp. oblong-linear, compressed, 

 glabrous, not rostrate. Pap. setaceous, copious, white. U Lvs. all radical. 

 Scape bearing a single, large, showy head, with yellow flowers. 



T. ciispldatnm Ph. Rt. fusiform ; Ivs. linear-lanceolate, woolly at the edge ; scales 

 lanceolate, cuspidate-pointed. Prairies, 111. Wis., and West. April June. 



111. FYRRHOPAPPUS, DC. FALSE DANDELION. Invol. double, 

 the outer row numerous, loose and spreading. Receptacle naked. Cyp. 5- 

 Efrooved, at length long-beaked, bearing a copious, soft, capillary, reddish 

 pap. (L) U Hds. solitary on long ped., large, with numerous deep yel. fls. 



P. Carollnlaiius DC. St. simple or branched, scape-like: Ivs. mostly radical, lance- 

 olate, acute, sinuate-toothed, lobcd, or pinnatifid. Fields, Md. to Fla. May July. 



112. TARAXACUM, Desf. DANDELION. Invol. double, the outer of 

 small scales, much shorter than the inner appressed row. Recep. naked. 

 Cyp. produced into a long beak crowned with the copious, white, capillary 

 pappus. Acaulescent herbs, with runcinate leaves. Figs. 68, 346, 492. 



T. Dens-leoiila Less. Outer scales of the involucre reflexed ; Ivs. runcinate. smooth, 

 dentate; scape short in fl., long in fr. a globe of pappus, y. Fields: common. Eur. 



113. LACTUCA, Tourn. LETTUCE. Invol. few-flowered, scales im- 

 bricated in 2 or more unequal rows. Cyp. obcompressed (flattened same 

 way as the scales), glabrous, abruptly narrowed to a long, filiform beak. 

 Pappus copious, soft, capillary, white. Herbs with leafy stems and panic- 

 ulate heads of variable colors. Fig. 77. 



1 L. Caiiadeiisis L. ft. elong-ata. Trumpet Milkweed. St. tall, hollow ; Ivs. pale 



beneath, clasping, runc.-pinnatifid, upper lance., entire ; heads racemous-paniculate, 

 with few scales and 12 + fls. @ Rich soils, thickets. 3 6f. Yel. to purplish. Jl.,Aug. 



/3. nang-uinea. Stem, If. veins, and fls. purple ; Ivs. some hairy, glaucous beneath. 



y. g-raminl folia, Lvs. long, linear, the lower few-lobed, upper entire. South. 



S. integ-rtfolta. Lve. lanceolate, all entire, lower some sagittate at base. 



2 l. saliva. Garden Lettuce. Stem corymbous ; Ivs. roundish, the upper cordate ; fls. 



white, (i) Said to be in some places, when its Ivs. become dentate-lobed and prickly. 



114. MULG3DIUM, Cass. WILD LETTUCE. Involucre somewhat 

 double, outer scales short and imbricated. Recep. naked, faveolate. Pap 

 capillary, crowning the short-beaked, compressed cypsela. Leaves mostly 

 epinulous. Hds. paniculate, small, oo-flwd. Jl. Sept Figs. 76, 448-50 



