PRIMULACE^. (primrose FAMILY.) 281 



as Ion"- as the calyx. — Swamps and marshy banks of streams, in the upper 

 districts. July. — Stem 2° -3° long. Flowers smaller than in any form of the 

 preceding. 



7. L. longifolia, Pursh. Smooth; stem erect, mostly simple, 4-angled; 

 leaves linear, obtuse, sessile, with the margins revolute, the lowest ones spatu- 

 late ; corolla large, with roundish abruptly acute lobes. — Wet banks. South 

 Carolina, and northward. July to Sept. — Stem l°-3° high. Leaves 2' -4' 

 long, rather rigid. Corolla 8" - 9" in diameter. 



3. DODECATHEON, L. American Cowslip. 



Calyx 5-cleft, the lobes reflexed. Corolla-tube very short, the 5-parted limb 

 reflexed. Stamens ."5, the filaments monadelphous at the base : anthers long and 

 linear, erect. Capsule oblong-ovate, 5-valved at the apex, many-seeded. — Stem- 

 less herbs. Leaves radical, clustered, spatulate or oblong. Flowers umbellate, 

 terminating the naked scape, white or purple. 



I. D. Meadia, L. Smooth; leaves entire or obscurely crcnate ; umbel 

 bracted, many-flowered ; flowers showy, nodding. — Woods, North Carolina and 

 Tennessee. May and June. 1]. — Scape 1° high. Leaves 4' - 6' long. 



4. ANAGALLIS, L. Plmpernel. 



Calyx 5-parted. Corolla wheel-shaped, 5-parted, longer than the calyx. Sta- 

 mens five : filaments bearded. Capsule globose, opening transversely, many- 

 seeded. — Low herbs, with opposite or whorled leaves, and axillary peduncled 

 flowers. 



1 . A. arvensis, L. Stem branching, spreading, 4-angled ; leaves ovate, 

 sessile ; peduncles longer than the leaves, nodding in fruit; flowers red. — Fields 

 and pastures. Introduced. July. — Stem 6' long. 



5. CENTUNCULUS, L. 



Calyx 4-parted. Corolla bell-shaped, 4-cleft, shorter than the calyx. Sta- 

 mens 4, beardless. Capsule globose, many-seeded, opening transversely. — 

 Small annuals, with alternate leaves, and minute nearly sessile axillary white 

 flowers. 



1 • C. minimus, L. Stem 3-angled, ascending, mostly branched ; leaves 

 obovate, acute ; flowers often clustered. (C. lanceolatus, Michx.) — Low ground 

 near the coast, Florida to North Carolina, and westward. March and April. — 

 Stem l'-6' long. 



6. SAMOLUS, L. 



Calyx 5-clcft ; the tube adherent to the base of the ovary. Corolla salver- 

 shaped, 5-parted, commonly with slender filaments interposed. Stamens 5, 

 included. Capsule 5-valved at the apex, many-seeded. — Smooth and some- 

 what fleshy marsh herbs, with alternate entire leaves, and small white flowers 

 in terminal racemes. 



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