GENUS I. LOBELIA FAMILY. 301 
4. Lobelia syphilitica L. Great Lobelia. 
Blue Cardinal-flower. Fig. 4031. 
Lobelia syphilitica L. Sp. Pl. 931. 1753. 
Loteta syphilitica ludoviciana A. DC. Prodr. 7: 377. 
18309. 
Perennial by short offsets; stem sparingly pubes- 
cent, rather stout, very leafy, usually simple, 1°-3° 
high. Leaves glabrous or sparingly puberulent, 2’-6’ 
long, 4’-2’ wide, oval, oblong, or lanceolate, acute 
or acuminate at the apex, narrowed at the base, re- 
pand-denticulate, irregularly crenate-dentate or near- 
ly entire, sessile, or the lower obovate, obtuse and 
narrowed into petioles; flowers bright blue, or occa- 
sionally white, 10’-12” long, densely racemose, leafy- 
bracted; calyx-lobes lanceolate, acuminate, pubescent 
or ciliate, the sinuses appendaged by large deflexed 
auricles; corolla-tube 5”-6” long, about 2” thick, the 
lobes of its larger lip oblong-oval, obtuse or acutish, 
glabrous; larger anthers glabrous. 
In moist soil, Maine and Ontario to South Dakota, 
Colorado, Georgia, Louisiana and Kansas. Hybridizes 
with the preceding species. High-belia. July—Oct. 
5. Lobelia amoéna Michx. Southern Lobelia. 
Fig. 4032. 
Lobelia amoena Michx. Fl. Bor. Am. 2: 152. 1803. 
Lobelia amoena glandulifera A. Gray, Syn. Fl. 2: 4. 1878. 
Nearly glabrous throughout, perennial; stem simple, 
slender, leafy, 1°-4° high. Leaves thin, ovate to oblong- 
lanceolate, narrowly oblong, or oval, repand-dentate or 
denticulate, the lower petioled and mostly obtuse, 2’-6’ 
long, the upper sessile, acute or acutish, smaller; flowers 
blue, racemose, nearly 1’ long; bracts narrow and small, 
or the lower foliaceous, glandular; pedicels 1-23” long; 
calyx-lobes linear-subulate, acuminate, glabrous, glandu- 
lar, elongated, the sinuses usually not auricled; corolla- 
tube 5-7” long, 13-2” thick; larger anthers glabrous. or 
puberulent at the tip; lobes of the larger lip of the co- 
rolla broadly ovate to oval, obtuse, glabrous. 
6. Lobelia elongata Small. Long-leaved 
Lobelia. Fig. 4033. 
L. elongata Small, Fl. SE. U. S. 1144. 1903. 
Perennial, at least by offsets, glabrous or nearly 
so; stem simple, 1°~3° tall, commonly wand-like. 
Leaves rather few, erect or ascending, linear or 
nearly so, 2-4’ long, mostly acute, serrate or 
dentate-serrate with gland-tipped teeth, sessile or 
narrowed into petiole-like bases; flowers deep- 
blue in rather closely flowered, but not densely 
flowered, one-sided racemes 4’-12’ long; bracts 
linear to lanceolate, serrate with gland-tipped 
teeth, the lower ones sometimes surpassing the 
corollas; calyx-lobes elongate, linear-subulate or 
linear-setaceous, entire, as long as the corolla or 
shorter, without auricles at the sinuses; corolla- 
tube 5’-8” long, lobes of the lower lip oval or 
ovate, glabrous. 
In low grounds or swamps, Virginia to Florida and 
Louisiana. Aug.—Oct. 
