234 American Midland Naturalist Monograph No. 2 



2. ruellia l. 

 1. Flowers sessile or nearly so. 



2. Stem hirsute; calyx lobes linear-filiform, 0.5-1 mm. wide, exceeding the 

 capsule; leaves nearly sessile; roadsides and open woods, common 



throughout 111. June-Aug. Hairy Ruellia R. ciliosa Pursh 



2. Stem glabrous or puberulent; calyx-lobes linear-lanceolate, 2-4 mm. wide, 



about equalling the capsule; leaves petioled; alluvial soil throughout the 



state except the n. counties. June-July. Smooth Ruellia ...R. strepens L. 



1. Flowers on slender peduncles bearing a pair of leaf -like bracts at the apex; 



stem puberulent; calyx-lobes subulate-filiform, shorter than the capsule; 



dry open woods, s. 111. June-Aug. Stalked Ruellia ...R. peduticulata Torr. 



143. Phrymaceae Schauer — Lopseed Family 



1. Phryma L. — Lopseed 

 P. leptostacbya L. Alluvial soil in woods, common. June-Aug. 



144. Plantaginaceae Lindl. — Plantain Family 



1. Plantago L. — Plantain 



1. Leaves ovate, oval, lanceolate or spatulate, not linear. 



2. Leaves narrowed at the base; veins free to the base. 

 3. Spikes cylindrical. 



4. Capsules 4-18-seeded; corolla-lobes spreading or reflexed in fruit; 



leaves ovate or oval; plants perennial. 



5. Capsules ellipsoid, 4-5 mm. long; sepals elliptic, acutish, 2.5-3 mm. 



long; seeds 1.5-2 mm. long; leaves glossy green, the petioles 



usually purplish at base; waste places, roadsides, lawns, fields, 



and open woods, very common. June-Sept. Common Plantain 



P. riigelii Dene. 



5. Capsules ovoid, about 3 mm. long; sepals oval, obtuse, 1.5 mm. 

 long; seeds 0.6-0.7 mm. long; leaves dull green; waste places in 

 cities, not common; probably adv. from Eur.; known in III. from 

 Chicago, Hill, Moffatt, and Peoria, Brendel, McDonald. Broad- 

 leaved Plantain P. major L. 



4. Capsules 2-seeded, ellipsoid, 2 mm. long, circumscissile at the middle, 

 tipped with the persistent corolla; seeds yellowish brown, concave 

 on one side, 1.5 mm. long; sepals pubescent, scarious-margined; 

 leaves spatulate or obovate; plants annual or biennial; fields and 



roadsides, not infrequent. May-July P. virginica L. 



3. Spikes ellipsoid; leaves lanceolate; seeds 2, hollowed on the inner sur- 

 face; waste places, roadsides, fields, lawns, very common; nat. from 

 Eur. May-Sept. Buckhorn Plantain P. lanceolata L. 



2. Leaves, or some of them, cordate at base; veins branching from the mid- 

 rib; spikes cylindrical; capsules 2-4-seeded, 4-5 mm. long; along ditches, 

 local. May-July. Heart-leaved Plantain P. cordata Lam. 



