LOBELIACEAE (LOBELIA FAMILY) 769 



3. L. pub6rula Michx. Finely soft-pubescent; leaves thickish, obtuse, 2.5-5 

 cm. long, with small glandular teeth ; spike rather 1-sided ; bracts ovate ; sinuses 

 of the calyx with short and rounded or often inconspicuous auricles, the hairy 

 tube top-shaped; corolla bright blue, 1.5-2 cm. long. Moist sandy grounds, 

 N. J. to la., s. to Tex. and Fla. 



4. L. amoena Michx. Glabrous or nearly so ; raceme virgate ; leaves nar- 

 rower ; bracts lanceolate or linear, often glandular-denticulate ; calyx-lobes long 

 and very slender, usually without auricles, the tube glabrous. South Atlantic 

 States, in swamps. Var. GLANDULfFERA Gray. A slender form with secund 

 raceme, oval to lance-oblong obtuse gland-toothed leaves, and the bracts and 

 calyx-teeth beset with slender gland-tipped teeth. Del., and south w. 



-M- -M- Leaves long and narrow, sparse above; lip of corolla pubescent at base. 



5. L. glandulbsa Walt. Glabrous or sparingly pubescent ; leaves, bracts, and 

 usually the lobes of the calyx strongly glandular-toothed ; calyx-tube densely 

 hispid, rarely sparsely so or smoothish, the sinuses not auriculate. Pine barren 

 swamps, s. Va. to Fla. 



*- -i- Flowers smaller (corolla-tube not more than 4-8 mm. long'}. 



*-* Stem leafy, mostly simple, continued into an elongated virgate spike-like ra- 

 ceme ; leaves lanceolate to obovate, barely denticulate or repand. 



6. L. Iept6stachys A. DC. Smooth above ; leaves obtuse, thick, denticulate, 

 oblong-lanceolate, the upper gradually reduced to awl-shaped bracts ; calyx-- 

 lobes nearly equaling the corolla, with 10 reflexed awl-shaped appendages as long 

 as the hemispherical tube. Sandy soil, O. to Kan.; also Va. to Ga. ; rarely 

 adventive in the Northeast. 



7. L. spicata Lam. Stem slender, strict, 0.3-1 m. high, minutely pubescent 

 below, as are the barely denticulate leaves ; lower leaves obovate or spatulate, 

 the upper reduced to linear or club-shaped bracts ; calyx-tube short, obconical 

 or becoming almost hemispherical, sinuses not appendaged. Moist or dry 

 mostly gravelly or sandy soil, P. E. I. to Ont., westw. and southw. Var. PARVI- 

 FLORA Gray. A small form, with calyx-lobes broadly subulate, and pale corolla 

 but 6 mm. long. Swamps, Lancaster, Pa. (Porter). Var. HIRTELLA Gray. 

 With somewhat scabrous pubescence, and minutely hirsute-ciliate bracts and 

 calyx-lobes. 111., Mich., and northwestw. 



*-< - Stem leafy, often paniculately branched ; flowers loosely racemose ; sinuses 

 of calyx not appendaged ; annual or biennial. 



= Leaves chiefly linear, entire or denticulate ; pod not inflated. 



8. L. Canbyi Gray. Stem strict, 3-9 dm. high, minutely angled ; pedicels 

 shorter than the bracts and flowers, minutely roughened under a lens ; bractlets 

 none ; calyx-tube top-shaped, acute at base, only half the length of the lobes 

 (which, with the linear leaves, are sparsely glandular-denticulate), in fruit be- 

 coming ellipsoid, covering the whole pod ; corolla deep blue, fully 1 cm. long, 

 more or less bearded in the throat. Wet places, N. J., Del., and S. C. 



9. L. Kalmii L. Stem mostly low (1-5 dm. high), minutely angled ; pedicels 

 filiform, not exceeding the linear or setaceous bracts, but as long as the flower, 

 minutely 2-bracteolate or 2-glandular above the middle ; calyx-tube top-shaped or 

 obovoid, fully half the length of the lobes, in fruit rather longer than they, cov- 

 ering the whole pod; corolla light blue, 1 cm. long. Wet limestone shores 

 and bogs, Nfd. to N. J., w. to n. la., Minn., and Man. 



10. L. Nuttallii R. & S. Stem very slender, 3-9 dm. high, terete ; pedicels 

 mostly longer than the bracts and shorter than the flowers, usually with very 

 minute bractlets near the base ; calyx-tube very short, depressed-hemispherical 

 in fruit, the globular pod half free; corolla pale blue, 5-8 mm. long. Sandy 

 swamps, L. I., N. J., and Pa. to Ga. 



= = Leaves ovate or oblong, obtusely toothed ; pod inflated, wholly inferior. 



11. L. inflata L. (INDIAN TOBACCO.) Stems paniculately much branched 

 from an annual root, pubescent with spreading hairs, 3-8 dm. high; leaves 



GRAY'S MANUAL 49 



