7'4 



PRIMULACEAE. 



VOL. II. 



4. Steironema lanceolatum (Walt.) A. Gray. Lance-leaved Loosestrife. 



Fig. 3295- 



Lysimachia lanceolata Walt. Fl. Car. 92. 1788. 

 L. hybrida Michx..Fl. Bor. Am. i : 126. 1803. 

 Steironema lanceolatum A. Gray, Proc. Am. Acad. 

 12: 63. 1876. 



Stem erect, slender, glabrous, simple or 

 branched, 6'-3 high. Leaves lanceolate, linear 

 or oblong-lanceolate, petioled or nearly sessile, 

 membranous, pinnately veined, acute or acumi- 

 nate at the apex, usually narrowed at the base, 

 i '-5' long, 2"-io" wide, the margins naked or 

 ciliate; lower leaves shorter, often oblong or 

 nearly orbicular; petioles 2"-8" long, naked 

 or ciliate; peduncles slender or filiform, i'-ii' 

 long; calyx-segments lanceolate, acute or 

 acuminate, nearly as long as or exceeding the 

 erose and cuspidate-pointed corolla-segments; 

 flowers s"-9" broad ; capsule nearly as long as 

 the calyx-segments. 



In moist soil, Maine to North Dakota, south to 

 Florida, Louisiana and Arizona. June- Aug. Con- 

 sists, apparently, of several races, regarded by 

 some authors as species, which differ in width of 

 leaves, length of petioles, length and shape of 

 staminodes. 



5. Steironema quadriflorum (Sims) Hitchc. Prairie Moneywort. Linear-leaved 



Loosestrife. Fig. 3296. 



L. quadri flora Sims, Bot. Mag. pi. 660. 1803. 

 L. longifolia Pursh, Fl. Am. Sept. 135. 1814. 

 Steironema longifolium A. Gray, Proc. Am. Acad. 



12 : 63. 1876. 

 Steironema quadriflorum Hitchc. Trans. St. Louis 



Acad. 5 : 506. 1891. 



Stem erect, strict, glabrous, simple or little 

 branched, 4-sided, 6'~3 high. Stem-leaves all 

 but the lowest sessile or very nearly so, firm, 

 narrowly linear, i-nerved, the lateral veins 

 obscure, acute or acuminate at both ends, i'-4' 

 long, i"-2$" wide, usually with smaller ones 

 fascicled in the axils, glabrous, the margins 

 slightly revolute ; basal leaves oblong or linear- 

 oblong, shorter, slender-petioled, acute or 

 obtuse; peduncles filiform, 4'-iF long; calyx- 

 segments lanceolate, acute, shorter than the 

 cuspidate and slightly erose corolla-segments ; 

 flowers 8"-i2" broad, often somewhat clustered 

 in 4's at the ends of the branches. 



Along streams and lakes, Virginia to western 

 New York, Ontario, Kentucky, Missouri, Iowa and 

 Manitoba. June-July. 



7. NAUMBURGIA Moench, Meth. Suppl. 23. 1802. 



An erect perennial leafy herb, with slender rootstocks, opposite sessile lanceolate entire 

 leaves, the lower much smaller or reduced to scales, and small yellow flowers in axillary 

 peduncled spike-like racemes or heads. Calyx 5-7-divided, the sepals linear, slightly imbri- 

 cated. Corolla deeply 5~7-parted, the tube exceedingly short, the segments narrow. Stamens 

 5-7, exserted ; filaments slender, glabrous, slightly united at the base, alternating with as 

 many small tooth-like staminodia at each sinus of the corolla. Ovary globose-ovoid; ovules 

 few or several ; style slender, equalling or exceeding the stamens ; stigma capitate. Capsule 

 5-7-valved, few-seeded. Seeds not margined, somewhat angled. [In honor of Naumburg.] 



A monotypic genus of the north temperate zone. 



