Oedeb 11.— LOBELIACBiE. 4lB 



tumid at base; receptacle naked; pappus of simple, copious, white- 

 silky hairs, in many series : achenia compressed, not rostrate. — Lvs. 

 mostly spinulous. Hds. with many yellow fls. 



I Flowers bright yellow, in showy heads. Achenia angular. Perennial No. 1 



I Flowers pale yellow, in large heads. Acheniaflat Annual Nos. 2, 8 



1 S. arveusis L. Koot creeping; gtem glabrous, erect ; lvs. runcinate-pin- 

 uatifid, spinulous-dentate, cordate, clasping at base, with short and obtuse auri- 

 cles; panicles umbellate-oorymboua ; ped. and invol. hispid; aoh. somewhat 

 4-angIed| riba transversely rugulous. — Waste grounds, naturalized, E. Mass, and 

 S. N. York, rare. St angular, about 2f high. Hds. large, with deep yellow 

 a,s. § Eur. 



2 S. asper VilL I/os. eerdate-amplexicaul, oblong-lanceolate, undulate, spinultna- 

 dentate ; ped. subumbellato ; ach. oval-obovate, 3-ribbed on each side. — Found in 

 similar situations with the former, but less common, U. S. St. 1 to 2f high, 

 smooth except at the "summit of the branches where it is often hispid-glandular. 

 Lvs. with numerous, short, spiny teeth, wavy or slightly runcinato, the upper 

 ones clasping so as to appear perfoliate. Scales with few scattered hairs. Aug, 

 Sept. (S. spinulosus Bw. S. Carolinianus Walt.) 



3 S. olerdoens L. I/os. sagittaie-amplexicaul, runcinate-pinnaiifid, subspinulous, 

 dentate ; ped. downy; invol. at length Smooth ; aeh. many-stiriate. — A sordid look- 

 ing plant, in waste ground, among rubbish, &c. Plant of a glaucous hue. St 

 angular, hollow, fragile, 2 to 3f in height Lvs. apparently clasping, with large, 

 retreating lobes at base, wavy and serrated in a runcinate manner, the teeth end- 

 ing in weak spines. Invol. dilated at base, with yellow corollas. Sept § Eur. 



SuBOKDBR III. L ABIATIFLOKyE. 



tl5. CHAPTA'LIA, Vent. (Dedicated by Ventenat to the celebrated 

 French chemist M. Chaptal.) Heads radiate ; involucre campanulate ; 

 scales in few series, linear, acute ; receptacle naked ; i-ay flowers $ , 

 ligulate, disk-flowers ^ , but sterile, bilabiate, lips equal, outer 3-, inner 

 S-partcd; achenia glabrous ; pappus capillary. — 21 Acaulescent herbs. 

 Lvs. all radical. Hd. solitary, cyanic. 



C. tomentdsa Vent. Lvs. oblong-ovate or lance-oval, on p. short petiole, ro- 

 trorsely denticulate, clothed with a dense, white tomentum beneath ; scape 

 loosely tomentous ; hd. nodding until in flower, thence erect on the slender, sim- 

 ple scape. — Moist pine barrens, N. Car. to Fla. and La. An interesting plant, 

 alone representing the suborder. Labiatseflorse. Lvs 2 to 4' long, 6 to 15" wide, 

 often subsessile, the upper surface at first arachnoid, at length smooth. Scape 

 6 to 12' high. Bays about 20, rose-red or whita Disk florets pale yellow. 

 Mar., Apr. 



Okdee LXXI. LOBELIACE^. Lobeliads. 



3erbs or shrubs with a milky juice, alternate, exstipulate lvs. and scattered fls. 

 Galyx 6-lobed or entire. Cor. monopetalous, irregular, split down to the base on 

 one side. Stamens 5, free from the cor., united into a tube at least by their anthem 

 Ovary adherent to the calyx tube. Style 1. Stigma smxounded by a fringe. Fruit 

 a capsule 2 — 3-(rarely 1-) celled. Seeds numerous, albuminous. 



Genera 20, species S75, most abundant in countries near the tropics, as W. Indies, Brazil, 

 Sandwich Islands, but common also tLrougliout the temperate zunes. 



Pi'operliett. The species of Lobelia are more or less poisonous. The millty juice is acrid and 

 oarootic, producing effects similar to those of Tobacco. L. inflata hna long been considered a 

 remedy ibr spasmodic asthma, but more recently is adopted in the regular practice of tlie "Bot- 

 anic School" of Medidch w- an enietJe, expectorant and sadorific, applicable in nuincroas di»- 

 aaaes. Lilto Aconite and other m.ediclnal poisons. It is, of course, to be used with caution. 



