Indian Tobacco,  Lobelia inflata
Campanulaceae or Bellflower Family

Small plant, 1/2 to 3 feet tall.  Leaves not opposite each other, egg-shaped, toothed.  Flowers small, pale blue to lavender.  The flowers are tubular and have two lips, the upper lip has two lobes and the lower lip has three (which is typical of all lobelias).  The fused sepals inflate in the fruit.  Blooms in summer.

Weedy native of fields and waste places.  Easily overlooked, but can be found in the meadows of Wildwood, including near the Outdoor Classroom.

Easily identified by its small, pale blue flowers and inflated pods.
 

Inflorescence
Flower

Fruit

Leaves