LOBELIACEAE 1145 



leaves few ; blades linear, narrowly linear, or linear-oblanceolate below, 2-15 cm. long, 

 obtuse or acutish, shallowly repand or glandular-tootbed, slightly revolute, sessile or the 

 lower ones short-petioled : racemes few-flowered, often recurved : pedicels 1-1.5 cm. long, 

 erect, often hirsute near tlie tip : hypanthium often sparingly hirsute, campanulate, 3-3.5 

 mm. long : sepals linear-lanceolate, 3 or 4 times as long as tlie hypanthium, remotely denticu- 

 late with gland-tipped teeth : corolla showy, about 2 cm. long ; tube much longer than the 

 calyx ; limb 2-3 cm. broad ; lobes abruptly pointed or mucronate : capsules 5-7 mm. high. 

 In wet sandy pine lands, Virginia to Florida. Spring to fall. 



10. Lobelia Halei Small. Perennial, slender, nearly glabrous. Stems erect or 

 ascending, simple, sometimes zigzag : leaf-blades thick, 2-8 cm. long, tlie lower with 

 oblong-spatulate rather obtuse petioled blades, the upper narrowly lanceolate or linear- 

 lanceolate, acute, sessile, more or less denticulate : raceme 1-2 dm. long : pedicels erect 

 or ascending, usually pubescent : hypanthium often minutely pubescent : sepals lanceolate 

 to ovate-lanceolate, 3-5 mm. long, entire or sparingly toothed, prominently auricled at 

 the base : corolla blue ; tube about twice as long as the sepals ; lobes acute : capsules 

 slightly shorter than the sepals. [L. Ludoviciana A. Gray, not L. syphilitica var. Ludovi- 

 ciana A. DC] 



On wet prairies, Louisiana and Texas. Spring. 



11. Lobelia Floridana Chapm. Perennial, glabrous. Stems erect, 8-15 dm. tall, 

 simple or branched above, scape-like : leaves mainly basal ; blades linear or slightly 

 broadened upward, strap-like, 1-4 dm. long, undulate or crenate-undulate, sessile ; those 

 of the stem-leaves much reduced and remote : raceme usually many-flowered : bracts as 

 long as the pedicels or slightly longer : hypanthium sometimes slightly glandular : sepals 

 lanceolate, 4-5 mm. long, denticulate, auricled at the base : corolla blue, 15-18 mm. long; 

 tube about twice as long as the sepals, minutely pubescent without : capsules about one- 

 half superior. 



In wet pine lands, Florida to Mississippi. Spring to fall. 



12. Lobelia paludosa Nutt. Perennial, more or less aquatic, slender, glabrous. 

 Stems scape-like, erect, 2-7 dm. tall, simple or sometimes branched above : leaves mostly 

 basal ; blades linear or linear-spatulate, or rarely oblong-ovate, 3-25 cm. long, or rarely 

 longer, obtuse, entire or sinuate-crenate, sessile or petioled : raceme slender, few-flowered 

 or sometimes elongated and rather many-flowered : bracts mostly shorter than the pedicels: 

 hypanthium glabrous : sepals lanceolate or linear-lanceolate, 2.5-3.5 mm. long, acute, 

 often entire : corolla pale blue or white, 1 cm. long or shorter ; tube fully twice as long as 

 the sepals, pubescent at the base of the lips within : capsules more than one-half inferior. 



In and about pine-land swamps, Delaware to Florida and Louisiana. Spring to fall. 



13. Lobelia flaccidifolia Small. Perennial, slender, deep green, glabrous or nearly 

 so. Stems erect, 2-6 dm. tall, solitary, or loosely tufted, usually branched above : leaves 

 few ; blades thin, the basal or lower cauline obovate or oblong-spatulate, the others linear- 

 oblong or rarely linear-lanceolate, 3-10 cm. long, obtuse, undulate or crenate-undulate, 

 short-petioled: raceme interrupted, 0.5-2 dm. long: pedicels erect, 4-5 mm. long, usually 

 exceeded by their bracts : hypanthium glabrous, broadly turbinate, becoming globose- 

 hemispheric, acutely and strongly ribbed : sepals linear-lanceolate, 4-5 mm. long, glandu- 

 lar-toothed, auricled at the base, slightly revolute: corolla about 1.5 cm. long, blue, 

 sparingly pubescent without ; lobes of the upper lip reflexed, crisped, about i as long as 

 the tube, the lower lip as long as the tube ; lobes acute, the middle one lanceolate, the 

 lateral ones oblong-lanceolate : anthers pubescent : capsules ovoid, 5-8 mm. long, beaked, 

 more than one-half inferior. 



In sand in deep river swamps, southern Georgia and Florida. Summer. 



14. Lobelia appendicul^ta A. DC. Annual or biennial, glabrous or rough-pubes- 

 cent above. Stems erect, 3-6 dm. tall, often branched above, at length angled : leaves few ; 

 blades thinnish, those of the basal leaves spatulate or oblong-spatulate, petioled, the upper 

 ones ovate, oblong-obovate or oval or lanceolate, sessile, rather remote, distantly serrate, 

 denticulate or undulate : raceme 0.5-3 dm. long, much interrupted : pedicels slender, as- 

 cending, curved, pubescent : sejaals surpassing the bracts, subulate or linear-subulate, ciliate, 

 3-6 mm. long, prolonged at the base into reflexed distinct or more or less united appen- 

 dages : corolla blue, 6-8 mm. long ; tube about as long as the sepals : anthers pubescent on 

 the back, glabrous at the tip : capsules 4-5 mm. long, hemispheric at the base. 



In low grounds or pine woods, Arkansas to Louisiana and Texas. Spring. 



15. Lobelia Gattingeri A. Gray. Annual or biennial, glabrous or nearly so. Stems 

 erect, 2-4 dm. tall, simple, or branched mainly at the base, often hispid on the angles : 

 leaves several ; blades thinnish, 1-4 cm. long, the basal obovate, short-petioled, the cau- 

 line ovate, oblong or oval, all obtuse, irregularly toothed or nearly entire : raceme 0.5-2 



