578 PHRYMACEAE 
oblong, oval or egg-shaped, tapering at each end, without leaf-stalks or 
with short ones. Calyx lobes narrow, tapering into long bristle-like 
points, the whole calyx hairy. Corolla tube twice as long as the calyx, 
narrower; lobes spreading into a star-shaped flower an inch in diameter. 
Corolla blue. Dry ground, southern part of our area. June-Sept. 
2. R. strepens, L. (Fig. 6, pl. 148.) SmoorH RuetiiA. Similar to 
preceding species, but not downy or hairy. Penna., and southward. May- 
July. 
2. DIANTHERA. L. 
Mainly perennial herbs, our only species growing in shallow water at 
the edge of streams or ponds. Leaves opposite, entire. Calyx 5-parted. 
Corolla deeply 2-lipped, the tube slender, the upper lip erect, notched, the 
lower lip 3-parted, spreading. Stamens 2, inserted in the throat of the 
corolla, not extending beyond the upper lip. Capsule flattened, 4-seeded. 
D. americana, L. (Fig. 9, pl. 148.) Water Wirtow. Stem angled, 
grooved, 1 to 3 ft. high, scarcely branching. Leaves opposite, lance- 
shaped, 3 to 6 in. long by about 4 in. wide. Flowers in dense terminal 
clusters on very long naked stems. Corolla about 4 in. long, purple. 
Shallow water, not common. July-Sept. 
Famity IX.—PHRYMACEAE. Lorsrep Famity 
A perennial herb with branching stems, opposite egg-shaped 
leaves and narrow spikes of small, irregular, purplish flowers. 
Calyx cylindric, 2-lipped, the upper lip of 3 bristle-like teeth, the 
lower shorter, 2-parted. Stamens 4, unequal, not extending be- 
yond the throat of the corolla. Ovary 1-celled with a single ovule 
In fruit the capsule Jops downward. Corolla purple. 
PHRYMA, L. 
Characters as above. 
P. Leptostachya, L. (Fig. 8, pl. 148.) Lopsrrp, Plant 2 to 3 ft. 
high, downy, stem somewhat 4-sided. Leaves broad, coarsely toothed, 
spikes *of flowers very narrow, flowers mostly opposite, at first erect, then 
strongly reflexed against the stem. The narrow teeth of the calyx, in 
fruit, lock over the capsule. Woods, in most of our area. June-Aug. 
Order VII.—PLANTAGINALES. The Plantain Order 
Herbs with inconspicuous flowers with nerveless, dry, thin, mem- 
branaceous corollas, the flowers arranged in long slender dense 
greenish spikes or, in a head or solitary (the last two conditions 
rare and of these only one species with solitary flowers in our 
region). Calyx below the ovary, the segments equal or two of them 
longer. Corolla a spreading 4-pointed star on a short tube. Sta- 
mens 2 or 4. Fruit a capsule which opens by a lid. 
