300 



LOBELIACEAE. 



VOL. III. 



2. Corolla-tube only ^"-4" long. 



Stems mostly simple ; flowers in terminal spike-like racemes. 

 Sinuses of the calyx without auricles. 

 Sinuses of the calyx with reflexed subulate auricles. 

 Stems mostly paniculately branched; flowers in loose racemes. 

 Stem stout, pubescent; leaves ovate or oblong, dentate. 

 Stems slender, glabrous ; stem-leaves narrow, the basal wider. 



Pedicels mostly longer than flowers, 2-bracteolate near the middle. 

 Pedicels not longer than flowers, not bracteolate, or only so at the base. 

 Corolla 2^"-3j4" long; calyx-tube hemispheric in fruit. 

 Corolla 4 I /2"-5 I /2 > ' long; calyx-tube turbinate. 



L. spicata. 



L. leptostachys. 



n. L. inflata. 



12. L. Kalmii. 



13. L.Nuttallii. 



14. L. Canbyi. 



i. Lobelia Dortmanna L. Water Lobelia. Water 

 Gladiole. Fig. 4028. 



Lobelia Dortmanna L. Sp. PI. 929. 1753. 



Perennial, aquatic, glabrous throughout, somewhat 

 fleshy ; roots numerous, white, fibrous ; stem slender, 

 simple, erect, hollow, minutely scaly, 6'-i8' high. Leaves 

 all submersed and tufted at the base of the stem, terete, 

 hollow, obtuse, longitudinally divided by a partition, 

 I '-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 paludosa Nutt. Swamp Lobelia. 

 Fig. 4029. 



Lobelia paludosa Nutt. Gen. 2: 75. 1818. 



Perennial, aquatic, glabrous throughput; roots few and 

 thick; stem nearly naked, slender, simple, or branched 

 above, i-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'-o/ 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. PI. 930. 1753. 



Perennial by offsets ; stem slightly pubescent, or 

 glabrous, leafy, simple or rarely branched, 2-4i 

 high. Leaves oblong, oval, ovate-lanceolate, or 

 lanceolate, thin, glabrous or sparingly pubescent, 

 2'-6' long, i'-ii' 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), 

 i'-ii' long; bracts usually glandular; calyx gla- 

 brous or pubescent, its lobes linear, elongated, 

 acute; corolla-tube nearly or quite i' long; larger 

 anthers glabrous. 



In moist soil, New Brunswick to Florida, Ontario, 

 Kansas, Colorado and Texas. Slink-weed. Hog's- 

 physic. July-Sept. 



