200 SCROFHULARIACEiE. (FIGWOKT FAMILY.) 



* * Leaves undivided. 



2. P. pubescens, Solander. 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 

 Btamen bearded down one side ; anthers smooth. (P. hevigatus, 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 a' - 5' long. 

 Corolla 1' long, pale purple. 



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

 serrate or entire, clasping ; the lowest oblong, nan-owed 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, Benth. Larger (.3° - 4° high); leaves thicker; cymes 

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

 rens, Florida. 



5. LINARIA, Jnss. Toad-Flax. 



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

 cmarginatc or 2-lobed ; the lower 3-Iobcd; 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. — I bibs, with 

 alternate or (on the radical branches) opposite or whorled leaves, anil axillary or 

 racemose flowers. 



* Stems icith prostrate branches at the base, which bear broader opposite or whorled 



leaves. 



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

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

 straight ; pedicels erect, as long as the calyx; lobes of the small (8"-4") blue 

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

 tirrhinum Canadense, L.) — Cultivated ground, common. April and May. 

 © — Stem l°-2° high. 



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

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

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



gpreading, .'S-4 times as long as the calyx ; lobes of the small ('.'") blue corolla 

 truncate or emarginate ; spur very short. — Drifting Bands near the coast, n est 

 Florida. April and May. (g) — Stem 8' -12' high. 



* * Prostrate branches none. 



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



alternate, linear or linear-lanceolate, crowded; racei lensej flowers large (l 1 



long), y.iiow ; spur subulate ; Beeds flattened, margined. - Waste places, North 

 Carolina, and northward. Naturalized. Aug. U — Stem l°-a u high. 



