1146 LOBELIACEAE 



dm. long, interrupted : pedicels erect or ascending, curved, scabrous : sepals surpassing the 

 bracts, lanceolate-subulate, alternate, 3.5-5 mm. long, glabrous, never ciliate, without 

 auricles or with small callus-like appendages at the base : corolla blue, 7-8 mm. long ; tube 

 as long as the sepals: capsules 5-6 mm. long. 

 In cedar glades, Tennessee. Spring. 



16. Lobelia spicata Lam. Annual or biennial, slender, puberulent, or sometimes 

 nearly glabrous. Stems erect, 1-2 dm. tall, rarely branched : leaves firm, 1-10 cm. long, the 

 basal with spatulate obovate or suborbicular petioled blades, the upper ones varying from 

 oblanceolate to lanceolate, sessile, all crenate-dentate or nearly entire, obtuse : raceme 

 1-5 dm. long, often continuous : pedicels slender, erect or ascending : sepals (and hypan- 

 thium ) usually as long as the pedicel or longer, linear-subulate, 3-5 mm. long, without 

 appendages at their bases : corolla blue or white, 6-9 mm. long ; tube surpassing the sepals : 

 capsules 2.5-3 mm. high. 



In dry sandy soil or meadows, Ontario to the Northwest Territory, Florida and Texas. Summer. 



17. Lobelia leptostdchys A. DC. Annual or biennial, puberulent or glabrate. 

 Stems erect, 3-12 dm. tall, usually simple, somewhat angled : leaves firm, 3-10 cm. long, 

 the lower ones with oblanceolate or obovate, short-petioled blades, the upper ones with 

 blades varying from oblong to lanceolate and sessile, all entire or distinctly toothed, mostly 

 obtuse : raceme 1-4 dm. long : pedicels usually erect, more or less scabrous : flowers ap- 

 proximate or distant : hypanthium turbinate, becoming hemispheric : sepals subulate- 

 lanceolate, 5-6 mm. long, each with a pair of linear or subulate deflexed appendages at the 

 base : corolla blue, 6-8 mm. long : capsules 3-3.5 mm. high. 



In dry soil, Virginia to Ohio, Kansas and Georgia. Summer. 



18. Lobelia bracte^ta Small. Biennial or perennial, pale green, nearly glabrous. 

 Stems erect, 8-10 dm. tall, simple, angled: leaves few; blades thickish, spatulate to ob- 

 long or linear-lanceolate, or linear, 3-10 cm. long, obtuse or acute above, glandular-toothed, 

 paler beneath than above, ciliate or ciliolate near the base, the Imver ones narrowed into 

 margined petioles, the upper sessile : raceme 1-4 dm. long, conspicuously bracted, sel- 

 dom densely flowered : bracts linear or linear-subulate, 8-15 mm. long, glandular-toothed, 

 surpassing the corollas, spreading or ascending-spreading : pedicels often puberulent: sepals 

 linear-subulate, 3.5-4 mm. long, prolonged into subulate deflexed appendages at the base, 

 with the hypanthium longer than the pedicels : corolla blue, 8-9 mm. long ; tube about 

 equalling the sepals in length ; lobes acute : capsules 5-7 mm. high. 



In sandy pine woods. North Carolina and Georgia. Summer. 



19. Lobelia inflata L. Annual, pubescent with spreading hairs, light-green. Stems 



erect, 1-10 dm. tall, simple, or branched throughout, narrowly winged ; branches very 



slender : leaf-blades ovate, oval or the lower ones obovate, all varying from 2-9 cm. in 



length, obtuse or acutish, crenate, sessile, the nerves impressed above, prominent beneath : 



bracts ovate or lanceolate : pedicels slender, 3-10 mm. long : hypanthium campanulate, at 



length much inflated, glabrous, marked with purple ribs : sepals linear, erect or ascending, 



acute, much longer than the tube : corolla pale lilac, 7-8 mm. long ; lower lobes ovate, 



with 2 yellow blotches at the base ; upper lobes linear-spatulate, all acute ; tube slightly 



pubescent within : capsules oblong or oval, inflated, 5-8 mm. long, included in the accrescent 



hypanthium, crowned with the persistent sepals : seeds oblong, reticulated. 



In dry soil and on hillsides, Labrador to the Northwest Territory, Georgia, Arkansas and Nebraska. 

 Spring to fall. Indian Tobacco. Wild Tobacco. 



20. Lobelia Boykinii T. & G. Perennial, slender, glabrous, usually aquatic. Stems 

 erect, 3-8 dm. tall, virgate, hollow, simple or sparingly branched : leaves few, reduced ; 

 blades linear-filiform or filiform, 1-3 cm. long, distantly glandular-toothed, sessile : raceme 

 interrupted, 1-2 dm. long : pedicels filiform-setaceous, mainly 1 cm. long, subtended by sub- 

 ulate bracts which are usually about 5 as long as the pedicels, each much longer than the 

 hypanthium: sepals slender-subulate, 3.5-4.5 mm. long, spreading: corolla bright blue, 

 8-10 mm. long ; tube slightly surpassing the sepals : capsules half-inferior, 3-3.5 mm. long. 



In pine-land swamps. South Carolina to Georgia and Florida. Spring and summer. 



21. Lobelia CAnbyi A. Gray. Annual, or perennial from offsets, slender, slightly 

 puberulent or glabrate. Stems erect, 3-8 dm. tall, simple and ^vand-like or paniculately 

 branched : leaves rather few ; blades linear or oblong-linear, 2-6 cm. long, sessile, glan- 

 dular-denticulate : racemes 0.5-3 dm. long: pedicels slender, erect or ascending, shorter 

 than tiie subtending bracts, each as long as the hypanthium or siiorter : sepals linear-sub- 

 ulate, 2.5-3 mm. long, glandular-denticulate : hypanthium elongating in age : corolla bright 

 blue, 8.5-9.5 mm. long ; tube surpassing the sepals : capsules wholly inferior, about 4 mm. 

 long. 



In pine-land swamps, New Jersey to South Carolina. Summer and fall. 



