ScLEROLEPis. LXXV. COMPOSITE. 313 



Suborder 1,— T UBULIFL,0R^. 



Corolla of the perfect or disk flowers tubular, regular, the limb 5-cleft 



or lobecl. ' 



Tribe 1. VERNOJflACE^. 

 Heads discoid, homogamous. Branches of the style subulate, hispid throughout. 



1. VERNONIA. Schreb. 



Named for Wm. Vemon, an English botanist who traveled in America in search of plants 



1 lowers all tubular ; involucre semieylindric, of ovate, imbricated 

 scales ; receptacle naked ; pappus double, the exterior chaflFy • the 

 interior capillary.— -ll- Herbs or shrubs. Lvs. mostly alternate. ' 

 1. V. NovEBORACENSis. Willd. Ncw York Vernonia. Iron-weed 

 Z/ys numerous, lanceolate, serrulate, rough: cyiiie fastig-iate- scales of 

 znvolucre filitorm at the ends.-A tall, showy plant with numerous large dar{ 

 purple flowers, found m meadows and other moist situations U S Stern 

 Branching at top, reddish, 3-6f high. Leaves crowded, paler beneath' radicS 

 ones often lohed. Cymes terminal, flat-topped, compound"^ Scales and corollas 

 deep purp e, the former ending in long, thread-like appendages. Sept 



J.-JrZl-; ^ 1V>,^^fi,^/^^^'^- ^^''¥-'^ ^^'- ^"'l ^'^ beneath pubescent ;, cafes 

 . nearly destitute of the filiform appendages.-Rather taller than the preceding. 



2. V. FAScicuLATA. Michx. Iro7i-wccd. 



St.taW, striate or grooved, tomentose; lvs. narrow-lanceolate,- taperin-r to 

 each end, serrulate, lower ones petiolate ; hds. numerous, in a somewhat fas- 

 tigiate cyme; z«raZ. ovoid-campanulate ; scales appressed, mucronulate or 

 obtuse.-Woods and prairie_s Western States, very common ! A coarse, pur- 

 plish-green weed 3-lOf high. Leaves 4-8' by 1-2', smooth above. CyWs 

 compact or loose. Heads large, or small. Corollas showy, dark purple twice 

 longer than the involucre. Jl. Aug. aiii. ^^uipic, iwice 



/?. Taller and more branching, with smaller heads.— Woods, la. ! 



2. elephantOpus. 



Gr. e\t<pai, elephant, novi, foot; alluding to the form of the leaves in some species. 



Heads 3— 5-flowered, glomerate ; flowers all equal ; involucre com- 

 pressed, the scales about 8, oblong, dry, in 2 series ; corolla palmate- 

 ligulate, 5--cleft, segments acuminate ; achenia ribbed, hairy • pappus 

 chafiy-setaceous.— ^ Erect, with alternate, subsessile leaves. Corolla 

 violet purple. 



E. Carolinianus. Willd. 



S<. branched, leafy, hairy; lvs. scabrous and somewhat hairy, ovate or 

 oval-oblong, obtuse, crenate-serrate, lower ones on petioles, upper ones subses- 

 sile; hds. terminal and subterminal.— Dry soils, Penn., Ohio ! to Flor and La 

 Stem 20—30' high, flexuous, the branches divaricate. Lower stem leaves 5—7' 

 ^ Vf' ' ^P^^^ about .2' by U', the highest oblong, smaller, subtending the 

 small heads in the form of an involucre. JL— Sept. ^ 



Tribe 2. EUPATORIACEJE. 



Heads discoid or radiate. Branches of the style much elongated, obtuse, 

 minutely pubescent towards the summit outside. Anthers not cordate. 

 Leaves mostly opposite. 



Section 1. Heads discoid, Iiomogaiuons* 



3. SCLEROLfiPIS. Cass. 

 f Gr. cTjcXfjpoj, hard, \ems, a scale. 



Head many-flowered ; scales of the involucre equal, linear, in y 



