=Bladderwort, Utricularia minor.=

7b. Spur of corolla long and slender
=Bladderwort, Utricularia intermedia.=

OROBANCHACEAE, the Broom-rape Family

Parasitic plants without green color and with scales in place of leaves;
corolla 2-lipped, of united petals; stamens 4, attached to the corolla.

1a. Flowers in a widely branching panicle, numerous; growing under beech
trees (1-5 dm. high; flowers white and purple, late summer)
=Beech Drops, Epifagus virginiana.=

1b. Flowers sessile in a dense bracted spike (1-2 dm. high; flowers
pale-yellow, early summer) =Squaw-root, Conopholis americana.=

1c. Flowers 1-15, each on a long erect naked peduncle (1-2 dm. high;
flowers yellowish or pale-violet, spring and summer) (Cancer-root)
--2.

2a. Stem erect and scaly, 5-10 cm. high
=Cancer-root, Orobanche fasciculata.=

2b. Stem very short, almost below the surface of the ground, with
long erect peduncles =Cancer-root, Orobanche uniflora.=

ACANTHACEAE, the Acanthus Family

Herbs with opposite simple leaves; corolla of united petals, 2-lipped or
almost regular; stamens 2 or 4, attached to the corolla; ovary 2-celled.

1a. Corolla about 10 mm. long; flowers in dense heads (4-10 dm. high;
flowers blue or white, summer) =Water Willow, Dianthera americana.=

1b. Corolla about 30 mm. long; flowers axillary (3-8 dm. high; flowers
blue, in summer) (Ruellia) --2.

2a. Foliage glabrous or slightly pubescent
=Ruellia, Ruellia strepens.=

2b. Foliage densely hirsute =Ruellia, Ruellia ciliosa.=

PHRYMACEAE, the Lopseed Family

Herb with opposite leaves and irregular flowers in long slender spikes;
petals united, corolla 2-lipped; stamens 4, attached to the corolla;
ovary 1-celled.

One species only, 5-10 dm. high; flowers purple, in summer
=Lopseed, Phryma leptostachya.=

PLANTAGINACEAE, the Plantain Family

Herbs with basal leaves and small white flowers in spikes; sepals 4;
petals 4, united; stamens 4; ovary 2-celled.

1a. Leaves linear (1-4 dm. high; summer) --2.

1b. Leaves broader, lanceolate to broadly ovate or cordate (summer) --3.

2a. Spikes mixed with bracts several times longer than