CUCURBITACEAE, the Gourd Family Herbs, climbing by tendrils, with alternate palmately lobed leaves and imperfect flowers; staminate flowers in showy clusters, with 5-6 petals and 3 stamens; pistillate flowers small. 1a. Leaves 5-angled or shallowy 5-lobed (flowers white, summer) =Bur Cucumber, Sicyos angulatus.= 1b. Leaves 5-lobed to about the middle (commonly cultivated and frequently wild; flowers white, summer) =Wild Cucumber, Echinocystis lobata.= CAMPANULACEAE, the Bellflower Family Herbs with alternate simple leaves and milky juice; sepals 5; petals 5, united; stamens 5, attached at the very base of the corolla; ovary inferior. 1a. Stem-leaves circular or nearly so, cordate-clasping at base (2-6 dm. high; flowers blue, axillary, in summer) =Venus' Looking-Glass, Specularia perfoliata.= 1b. Stem-leaves linear or nearly so, not over 1 cm. wide (summer) --2. 1c. Stem-leaves ovate to lanceolate, 2 cm. wide or more (flowers blue, in a terminal spike or raceme, summer) (Bellflower) --4. 2a. Stem and leaves glabrous (or rarely pubescent) (1-6 dm. high; flowers blue) =Harebell, Campanula rotundifolia.= 2b. Stem and leaves rough with reflexed bristles (marsh plants, with weak slender stems 3-10 dm. long; flowers white or pale-blue) (Marsh Bellflower) --3. 3a. Corolla 5-8 mm. long =Marsh Bellflower, Campanula aparinoides.= 3b. Corolla 10-12 mm. long =Marsh Bellflower, Campanula uliginosa.= 4a. Corolla rotate; flowers in spikes (6-15 dm. high) =Bellflower, Campanula americana.= 4b. Corolla bell-shape; flowers in one-sided racemes (4-10 dm. high) =Bellflower, Campanula rapunculoides.= LOBELIACEAE, the Lobelia Family Herbs with alternate simple leaves and milky juice; flowers irregular; petals 5, united; corolla split down the upper side; stamens 5, united by their anthers into a ring or tube surrounding the style; ovary 2-celled, inferior. Flowers in summer and autumn. 1a. Leaves all basal, tubular; flowers on leafless stalks (aquatic, 1-4 dm. high; flowers blue) =Water Lobelia, Lobelia dortmanna.= 1b. Leaves normal, on the stem --2. 2a. Flowers more than 2 cm. long (5-10 dm. high) --3. 2b. Flowers about 1 cm. long, or shorter (flowers light blue) --4. 3a. Flowers scarlet =Cardinal Flower, Lobelia cardinalis.= 3b. Flowers blue =Great Lobelia, Lobelia siphilitica.= 4a. Flowers in loose racemes, pedicelled --5. 4b. Flowers in slender terminal spike-like racemes, nearly sessile (4-10 dm. high, usually unbranched) =Lobelia, Lobelia spicata.= 5a. Foliage pubescent (3-8 dm. high) =Indian Tobacco, Lobelia inflata.=