244 PHEYMACEAE. 



compact and stout: calyx becoming 5 mm. long: corolla deep-blue or purple; 

 limb 8-9 mm. wide: nutlets oblong, 2.5 mm. long, or sometimes longer. 

 Frequent, in fields and on roadsides. Nat. of the West. HOARY-VERBENA. 



2. V. hastata L. Perennial, 4-15 dm. tall, roughish-pubescent : leaves 4-14 

 cm. long: blades lanceolate, oblong-lanceolate, or ovate-lanceolate, sharply 

 serrate and often incised or hastate at the base: spikes relatively slender and 

 compact: calyx becoming 2.5 mm. long: corolla violet-blue; limb 2.5-3.5 mm. 

 wide : nutlets linear, 1.5-2 mm. long. Common, in moist fields and meadows. 



BLUE-VERBENA. 



3. V. angustifolia Michx. Perennial, 1-5 dm. tall, puberulent or sparingly 

 pubescent: leaves 2-12 cm. long; blades linear-spatulate to linear-oblong or 

 linear, distantly or coarsely serrate: spikes slender: calyx becoming 4 mm. 

 long: corolla blue or purple; limb 5-6 mm. wide: nutlets linear, 3 mm. long. 



Common, in fields and on roadsides. 



4. V. urticaefolia L. Annual or perennial, 4-15 dm. tall, pubescent; leaves 

 8-21 cm. long; blades broadly lanceolate to ovate-lanceolate, or sometimes 

 ovate to oval, coarsely crenate-serrate : spikes loosely-fruited: calyx becoming 

 2.5 mm. long: corolla white; limb 3-4 mm. wide: nutlets oblong, 1.5-2 mm. 

 long. Common, in moist fields and meadows. WHITE-VERBENA. 



5. V. officinalis L. Annual, 2-6 dm. tall, glabrous or nearly so: leaves 2-6 cm. 

 long; blades of the lower ones 1-2-pinnatifid and incised: spikes very slender: 

 calyx 2 mm. long: corolla blue or purple; tube mostly less than 3 mm. long; 

 lobes mainly rounded: nutlets broadly oblong, about 1.5 mm. long. M. S. 

 Not common, in fields and waste places. Nat. of Eu. EUROPEAN-VERBENA. 



6. V. bracteosa Michx. Annual, the prostrate or procumbent branches 1-5 

 dm. long, hirsute: leaves 1-6.5 cm. long; blades pinnatifid, 2-3 cm. long: 

 spikes thick, sessile, continuous or mainly so: calyx becoming 3-4 mm. long: 

 corolla purple or bluish; limb 2-2.5 mm. wide: nutlets linear, 2-2.5 mm. long. 



S. Occasional, along railroad tracks. Nat. of the West. 



2. PHYLA Lour. Perennial procumbent or creeping herbs. Leaf-blades 

 toothed or lobed. Flowers in congested axillary spikes, the bracts cuneate to 

 flabellate. Calyx short, flattened, 2-lobed. Corolla 2-lipped: tube scarcely 

 exceeding the calyx. Fruit as broad as long. 



1. P. lanceolata (Michx.) Greene. Branches creeping, 1-4 dm. long: leaf- 

 blades elliptic-lanceolate to lanceolate, 1.5-5 cm. long: spikes 9-15 mm. long; 

 bracts erose-ciliolate : corolla about 3 mm. long. Susquehanna valley. Fre- 

 quent, on sandy islands and shores. Schists. Sum. FROG 'S-FRUIT. 



FAMILY 8. PHRYMACEAE. LOPSEED FAMILY. 



Perennial herbs, with angled stems. Leaves opposite: blades toothedf. 

 Flowers in slender spikes or spike-like racemes. Calyx of 5 partially 

 united sepals, 2-lipped, the upper lip very short. Corolla white and 

 magenta-tinged, of 5 partially united petals, 2-lipped, the lower lip 3- 

 lobed. Androecium of 4 didynamous stamens. Gynoecium of 2 united 

 carpels, the style bent at the base. Fruit an achene included in the de- 

 flexed accrescent calyx. 



1. PHRYMA L. Caulescent herbs with spreading branches. Leaf -blades 

 broad, coarsely toothed, petioled. Spikes or racemes elongate, the small 

 flowers opposite. Achene in the bottom of the calyx. 



1. P. Leptostachya L. Stems 3-10 dm. tall, sparingly branched above, re- 

 flexed-pubescent : leaf -blades ovate to elliptic-ovate or ovate-lanceolate, 3-15 



