spicuously crenate or serrate; inflorescence racemose, to 3 dm. long; pedicels 

 rough, slender, curved, 4-11 mm. long in fruit, with a pair of bracteoles near or 

 below the middle; bracts linear, denticulate, glabrous or puberulent, about equal- 

 ing the pedicels; flowers 14-22 mm. long; calyx lobes narrowly sagittate, 3-7 mm. 

 long, acute or attenuate at apex, glabrous or puberulent, often glandular-toothed, 

 the reflexed auricles rounded and about 1.5 mm. long or less; corolla lavender 

 or bluish-lavender to nearly white, with a white eye, pubescent or glabrous, the 

 tube 6.5-8.5 mm. long; filament tube lavender, 5-8 mm. long; anther tube 2-3 

 mm. long, bluish-gray; capsule 4-6 mm. in diameter. 



In low moist pinelands, savannahs and prairies, wet places along streams and 

 in river swamps in s.e. Tex., Apr.-Aug.; from Fla. and Ga. in the Coastal Plain 

 to Tex. 



7. Lobelia Reverchonii B. L. Turner. 



Stems to 1 m. high, conspicuously pilose with white spreading hairs to 1.5 mm. 

 long; leaf blade typically linear to linear-oblanceolate, prominently toothed, to 

 14 cm. long and 15 mm. wide, mostly 7 to 10 times as long as wide; flowers 2-2.7 

 cm. long, usually 10 or fewer, rarely as many as 15, the lower ones 2.5-5 cm. 

 apart; calyx lobes ovate to ovate-lanceolate, deeply cordate with rounded basal 

 lobes, 3-5 mm. wide, with a tuft of hairs at base; hypanthium and pedicels 

 densely pilose with long white or brownish hairs; corolla tube 9-15 mm. long; 

 lower corolla lobes recurved, with 2 white lenslike markings following the vena- 

 tion between the lobes; filament tube 8-1 1 mm. long; anther tube 3-4 mm. long, 

 grayish-blue. L. puberula var. pauciflora Bush. 



In bogs in e. Tex., autumn; e. to Ala. 



8. Lobelia puberula Michx. Downy lobelia, purple dewtdrop. Fig. 737. 



Plant densely short-hirsute or puberulent throughout, rarely glabrate, mostly 

 to 16 (rarely to 27) dm. high; stem usually simple; leaves oblong to lanceolate 

 or narrowly obovate, sessile or tapering to base, obtuse to acute at apex, with 

 callous-tipped teeth or subentire, to 12 cm. long and 4 cm. wide, the upper ones 

 passing gradually into the floral bracts; raceme dense or somewhat interrupted 

 below, to 5 dm. long, commonly 1 -sided, with as many as 75 flowers, the distance 

 between the lower flowers at most 25 mm.; pedicels stout, 3-5 mm. long in fruit, 

 the bracteoles basal or nearly so; bracts usually lanceolate, to 25 mm. long and 

 8 mm. wide; flower 15-24 mm. long; pedicels and base of calyx lobes glabrous 

 to thinly pubescent; calyx lobes lanceolate to narrowly deltoid-acuminate, with 

 revolute margins, to 15 mm. long and 4 mm. wide, the auricles small; corolla blue 

 to purple or rarely whitish, pubescent, the tube 5-8 mm. long, the lower lobes 

 not recurved, with a white eye extending across the venation; filament tube 6-7 

 mm. long; anther tube 3-3.5 mm. long, light-bluish-gray; capsule 4-7 mm. long. 



In swamps, wet woods, bogs, prairies and open fields, usually in wet places, 

 often in strongly acid soils in partial shade, in e. Okla. and e. Tex., Aug.-Dec; 

 in s.e. U.S., w. to Okla. and Tex. 



9. Lobelia siphilitica L. Big blue lobelia, great lobelia, blue cardinal 



FLOWER, Louisiana lobelia. 



Perennial by basal offshoots, to 13 dm. high; stem simple, coarse, smooth or 

 sparsely hirsute on the angles; leaves thin, ovate to oblong or broadly lanceolate, 

 irregularly serrate, acute at both ends, strigose above, to 18 cm. long and 6 cm. 

 wide, the upper merging into the floral bracts; raceme dense, to 5 dm. long, 

 scarcely secund; pedicels 5-10 mm. long, with median bracteoles; bracts lanceo- 

 late, 1—2 cm. long; flowers 23-33 mm. long; calyx hirsute, with broad foliaceous 

 lobes to 14 mm. long and broad auricles 2-5 mm. long; corolla blue, white- 



1580 



