300 LOBELIACEAE. Vor. III. 
2. Corolla-tube only 2”-4” long. 
Stems mostly simple ; flowers in terminal spike-like racemes. 
Sinuses of the calyx without auricles. g. L. spicata. 
Sinuses of the calyx with reflexed subulate auricles. 10. L. leptostachys. 
Stems mostly paniculately branched; flowers in loose racemes. 
Stem stout, pubescent ; leaves ovate or oblong, dentate. 11. L. inflata. 
Stems slender, glabrous; stem-leaves narrow, the basal wider. ‘ 
Pedicels mostly longer than flowers, 2-bracteolate near the middle. 12. L. Kalmii. 
Pedicels not longer than flowers, not bracteolate, or only so at the base. 
Corolla 2%”-3%” long; calyx-tube hemispheric in fruit. 13. L. Nuttallit. 
Corolla 4%4”-5%” long; calyx-tube turbinate. 14. L. Canbyi. 
1. Lobelia Dortmanna L. Water Lobelia. Water 
Gladiole. Fig. 4028. 
Lobelia Dortmanna L. Sp. Pl. 929. 1753. 
Perennial, aquatic, glabrous throughout, somewhat 
fleshy; roots numerous, white, fibrous; stem slender, 
simple, erect, hollow, minutely scaly, 6-18 high. Leaves 
all submersed and tufted at the base of the stem, terete, 
hollow, obtuse, longitudinally divided by a partition, 
1’-2’ long, about 2” thick; flowers in a loose terminal 
raceme, blue, 6’-8” long; pedicels filiform, shorter than 
or equalling the flowers; calyx-lobes subulate or lanceo- 
late, shorter than the tube, the sinuses usually not at 
all appendaged; corolla-tube 3-4” long, its lower lip 
glabrous or nearly so. 
Borders of ponds, usually in sandy soil, sometimes wholly 
emersed when the water is low, New Jersey and Pennsyl- 
vania to Newfoundland, Wisconsin, Washington and British 
Columbia. Also in Europe. July—Sept. 
=< 
2. Lobelia paludésa Nutt. Swamp Lobelia. 
Fig. 4029. 
Lobelia paludosa Nutt. Gen. 2: 75. 1818. 
Perennial, aquatic, glabrous throughout; roots few and 
thick; stem nearly naked, slender, simple, or branched 
above, 1°-4° high. Leaves mostly tufted at the base, flat, 
narrowly oblong or spatulate, emersed, obtuse or acutish, 
entire or repand-denticulate and glandular, those of the 
stem few, small and sessile, the basal ones 2’-0’ long, 2’’-4’ 
wide, narrowed into petioles; flowers pale blue, racemose, 
5-6” long; calyx-lobes narrowly lanceolate, about as long 
as the tube, the sinuses commonly not at all appendaged; 
corolla-tube 3-4” long, its lower lip pubescent at the base. 
In swamps and ponds, Delaware to Florida and Louisiana 
mostly near the coast. May-July. 
3. Lobelia cardinalis L. Cardinal-flower. 
Red Lobelia. Red Betty. Fig. 4030. 
Lobelia cardinalis L. Sp. Pl. 930. 1753. 
Perennial by offsets; stem slightly pubescent, or 
glabrous, leafy, simple or rarely branched, 2°-43° 
high. Leaves oblong, oval, ovate-lanceolate, or 
lanceolate, thin, glabrous or sparingly pubescent, 
2’-6’ long, 3#’-14’ wide, acuminate or acute at both 
ends, crenulate or denticulate, the upper sessile, 
the lower petioled; flowers racemose, commonly 
numerous, bright scarlet or red (rarely white), 
1-14’ long; bracts usually glandular; calyx gla- 
brous or pubescent, its lobes linear, elongated, 
acute; corolla-tube nearly or quite 1’ long; larger 
anthers glabrous. 
In moist soil, New Brunswick to Florida, Ontario, 
physic. July—Sept. 
Kansas, Colorado and Texas. Slink-weed. Hog’s- . 
