Vor. II.] PRIMROSE FAMILY. 591 
5. Steironema quadrifldrum (Sims) Hitchc. Prairie Moneywort. Linear- 
leaved Loosestrife. (Fig. 2820.) 
L. quadrifiora Sims, Bot. Mag. fl. 660. 1803. 
L. longifolia Pursh, Fl. Am. Sept. 135. 1814. 
Steironema longifolium A. Gray, Proc. Am. 
Acad. 12:63. 1876. 
Stetronema quadrifiorum Hitche. Trans. St. 
Louis ree 5:506. 1891. 
Stem erect, strict, glabrous, simple or little 
branched, 4-sided, 10’-24’ high. Stem-leaves 
all but the lowest sessile or very nearly so, 
firm, narrowly linear, 1-nerved, the lateral 
veins obscure, acute or acuminate at both 
ends, 1/-4/ long, 1/’-214’’ 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, 
44/-1'4’ long; calyx-segments lanceolate, 
acute, shorter than the cuspidate and 
slightly erose corolla-segments; flowers 8//— 
12’ broad, often somewhat clustered in 4’s 
at the ends of the branches. 
Along streams and lakes, West Virginia to 
western New York, Ontario, Kentucky, Iowa and 
Manitoba. June-July. 
7- NAUMBURGIA Moench, Meth. Suppl. 23. 1802. 
An erect perennial leafy herb, with slender rootstocks, opposite sessile lanceolate en- 
tire leaves, the lower much smaller or reduced to scales, and small yellow flowers in axil- 
lary peduncled spike-like racemes or heads. Calyx 5-7-divided, the sepals linear, slightly 
imbricated. 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. 
A monotypic genus of the north temperate zone. 
1. Naumburgia thyrsiflora (1,.) Duby. 
Tufted Loosestrife. (Fig. 2821.) 
Lysimachia thyrsifiora I, Sp. Pl. 147. 1753. 
Naumburgia guttata Moench, Meth. Suppl. 23. _ 1802. 
Naumburgia thyrsifiora Duby, in DC. Prodr. 8:60. 1844. 
Glabrous or somewhat pubescent; stems simple, erect, 
often tufted, 1°-2%° high. Leaves 2/4’ long, 4’/-10/” 
wide, the upper lanceolate or oblong-lanceolate, acute 
or acuminate at the apex, narrowed at the base, the 
lower smaller, the lowest reduced to ovate scales or 
these deciduous; peduncles solitary in the axils, rather 
stout, %/-1%4’ long; racemes dense, oblong or ovoid, 
¥4/-1/ long, spike-like; pedicels very short; flowers 
2//-3/’ broad; sepals usually spotted; corolla-segments 
yellow with black spots; style very slender; anthers 
oblong; capsule globose, black-spotted, when mature 
slightly longer than the sepals, shorter than the style. 
In swamps, Nova Scotia to Alaska, south to southern 
New York, Pennsylvania, Missouri and Oregon, Also in 
Europe and Asia. May-July. 
8. TRIENTALIS L., Sp. Pl. 344. 1753. 
Glabrous low perennial herbs, with simple slender erect stems, and lanceolate ovate or 
oblong leaves mostly clustered in a verticilat the summit. Flowers few or solitary, terminal, 
slender-peduncled, small, white or pink, deeply 5-9- (mostly 7-) parted. Sepals narrow, per- 
sistent, spreading. Corolla rotate, its tube almost none, its segments convolute in the bud, 
acute or acuminate, entire; filaments united into a narrow ring at the base; anthers linear, 
recurved after anthesis, Staminodianone. Ovary globose; ovules numerous; style filiform. 
Capsule globose, 5-valved, many-seeded. Seeds trigonous or spherical. [Latin, one-third 
of a foot, referring to the height of the plant.] 
Two species, of the northern hemisphere, The other occurs in northwestern America. 
