200 SCKOPIIULAUIACEi£. (FIGWORT FAMILY.) 



* * Leaves undivided. 



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

 acute, serrate or entire, sessile or clasping; the lowest ovate or oblong, tapering 

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

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

 stamen bearded down one side ; anthers smooth. (P. lacvigatus, Soland., 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 I' long, pale purple. 



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, spreading, 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, Bcnth. Larger (3° - 4° high); leaves thicker; cymes 

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

 rens, Florida. 



5. LINARIA, Juss. Toad-Flax. 



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

 ernarginatc 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 axillary or 

 racemose floAvcrs. 



* Stems with prostrate brunches at the base, which bear broader opposite or whorleil 



J tares. 



1. L. Canadensis, Sprang. 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 Canadensc, L.) — Cultivated ground, common. April and May. 



. —Stem I°-2° high. 



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

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

 radical branches obovate ; racemes elongated, flexuous, glandular-hairy ; pedicels 

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

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

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



* * Prostrate branches none. 



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

 alternate, linear or linear-lanceolate, crowded; raceme dense; flowers huge (1' 

 long), yellow ; spur BUbulate ; seed-, flattened, maigincd. — Waste places, North 

 Carolina, and northward. Naturalized. Aug. 1| — Stem 1° - 3° high. 



