Pericarpium. Capsula ovata, biloculariis, apice dehiscens, cincta calyce.
Semina plurima, minima.
Empalement. Cup one leaf, five-toothed, very small, growing round the seed-bud, withering; toothlets nearly equal.
Blossom one petal, irregular; tube cylindric longer than the cup, divided longitudinally above; border five-parted; segments lance-shaped, of which the two upper ones are smaller, more reflexed, deeper divided and form the upper lip; the three other lower ones spread more, and often are larger.
Chives. Five threads, awl shaped, the length of the tube of the petal. Tips joined together forming an oblong cylinder, splitting into five divisions at the base.
Pointal. Seed-bud tapered, beneath. Shaft cylindrical the length of the chives. Summit blunt, hairy.
Seed-vessel. Capsule egg-shaped, two celled, splitting at top, girt by the cup.
Seeds numerous, small.
SPECIFIC CHARACTER.
Lobelia foliis lanceolato-linearibus, confertis, integerrimis; denticulis calycinis longissimis; floribus cæruleis.