200 SCItOrilULARIACE^. (fig WORT FAMILY,) 



* * Leaves undivided. 



2. P. pubescens, Solander, Pubescent or smooth ; leaves lanceolate, 

 acute, sciTutc or entire, sessile or claspinj; ; the lowest ovate or oblong, tapcritjg 

 into a slender petiole ; cymes spreading, few-flowered ; tube of the corolla grad- 

 ually dilated above the middle ; the lower lip longer than tiic upper ; sterile 

 stamen bearded down one side ; anthers smooth. (P. hcvigatus, So/and., a 

 smooth form.) — Dry open woods and fence-rows, Florida to North Carolina, 

 and westward. June and July. — Stem 2° high. Lowest leaves 3' - 5' long. 

 Corolla 1' long, pale purjile. 



3. P. Digitalis, Nutt. Smooth or nearly so ; stem-leaves ovate-lanceolate, 

 serrate or entire, clasping ; the lowest oblong, narrowed into a petiole ; cymes 

 few-flowered, S])reading, forming a narrow panicle ; tube of the corolla abruptly 

 dilated near the base ; the lips nearly equal ; sterile stamen bearded down one 

 side. — Dry soil, Georgia, Florida, and westward. July. — Stem 2° high. Co- 

 rolla 9"- 12" long, white or pale purple. 



Var. multiflorus, Benth. Larger (3° - 4° high); leaves thicker; cymes 

 many-flowered, forming a large spreading panicle; corolla smaller. — Pine bar- 

 rens, Florida. 



5. LINARIA, Juss. Toad-Flax. 



Calyx deeply 5-parted. Corolla personate, spurred at the base ; the upper lip 

 emarginatc or 2-lobed ; the lower 3-lobed; the throat commonly closed by the 

 prominent palate. Stamens 4, didynamous. Capsule globose or ovoid, opening 

 at the apex, with few or several tooth-like valves, many-seeded. — Herbs, with 

 alternate or (on the radical branches) opposite or whorled leaves, and a.xillary or 

 racemose flowers. 



* Stems ivilh prostrate branches at the base, ichich bear broader opposite or whorled 



leaves. 



1. L. Canadensis, Spreng. Smooth; stem erect, slender, mostly simple; 

 leaves linear, flat, scattered; those on the radical branches oblong; racemes 

 straight ; pedicels erect, as long as the calyx ; lobes of the small (3" - 4") blue 

 and white corolla rounded ; spur filiform, curved, as long as the pedicels. (An- 

 tirrhinum Canadcnsc, L) — Cultivated ground, common. A))ril and May. 

 @ — Stem l°-2° high. 



2. L. Floridana, n. sp. Stem smooth, ascending, paniculately much 

 branched ; leaves scattered, fleshy, terete, linear or club-shaped ; those on the 

 ratlical branches obovatc ; racemes elongated, flexuous, glandular-hairy ; pedicels 

 sjjrcadiiig, 3-4 times as long as the calyx ; lobes of the small (2") blue corolla 

 truncate or emarginatc ; spur very short. — Drifting sands near the coast, West 

 Florida. April and May. (g) — Stem 3' -12' high. 



* * Prostrate branches none. 



3. L. vulgaris, Miller. Smooth ; stem erect, simple or branched ; leaves 

 altcrnati', linear or linear-lanceolate, crowded; raceme dense; flowers largo (1' 

 long), yellow ; spur subulate ; seeds flattened, margined. — Waste places, North 

 Carolina, ami norlliward. Naturalized. Aug. IJ. — Stem 1°- 3° high. 



