• PRIMULACK^. (primrose FAMILY.) 315 



6. LYSIMACHIA, Tourn. Looskstrife. 



Calyx 5- (nurly C-7-) juirtcd. Corolla wlieel-sliapcd, 5- (or 6-7-) parted, 

 or even of as many separate petals. Stamens as many. I'od globose, .5-10- 

 valvcd, few - many-seeded. — Leafy-stemmed perennials, with mo.stly yellow 

 flowers, either axillary or in a terminal raeeme. (Named in honor of King 

 Lysimac/tun, or from Xvcris, a rdaisefiom, fidx']^ ulrl/e.) 



§ 1. NAUMBCRGIA, Moeneh. Daves opjwslte, sessile, minutelij glandulnr-dotled : 

 jvirts oflhefloutr not ranlij 6, sometimes 7 ; the narrow petals a/most or f/iiitc 

 distinct, and with an interposed small tooth, spriukkd with purplish dots: jilamcnts 

 slender, distinct, equal : anthers short : pod few-seeded. 



1. L. thyrsiflbra, L. (Tufted Loosestrife.) Smooth; stem .simple 

 (l°-2° hij:li) ; lower leaves redueed to scales, the rest lanceolate, the axils of 

 one or two pair.s. of the middle ones hearing a short-jjcduncled head-like or sjjike- 

 likc elnster of light yellow small flowers; divisions of the eorolhi lance-linear. 

 (Xaumhurgia thyrsiflora, luichenb., and Ed. 2.) — Cold wet swamjjs, from Tenn. 

 northward. June, July. (Kn.) 



§ 2. TRIDYNLV, Kaf Leaves opposite or whorled, sessile, dotted: calyx and 

 golden-i/ellow corolla streaked trith dark lines : Jilaments mosllij nnerjual, jilainli/ 

 monadclphous at the base, tcilh no interposed sterile ones : anthers short : poil 5- 

 Vdlvcd, riprnimi onli/ 2 - .5 sn-ds. 



2. L. Stricta, Alt. Smootii, at length branched, very leafy; leaves opiiosite. 

 or rarely alternate, lanceolate, acute at each end ; flowers on slender pedicels in 

 a lonrj raceme (,')'- 12'), which is leafy at the base; or, in var. producta, leafy 

 for fully half its length : lobes of the corolla lance-oblong. — Low grounds : com- 

 mon. June -Aug. — Stems l^-l^ high, often bearing oblong or monihform 

 bulbiets in tlie axils. 



3. L. quadrifolia, L. Somewhat hairy; stem simple (l°-2° high); 

 leaves ivhorkd in lours or flves (rarely in threes or sixes) ovate-lanceolate; flow- 

 ers on long capillary peduncles y/o/« the axils of the leaves; lobes of the corolla 

 ovate-oblong. — Moist or sandy soil : common. June. — A variety has the 

 leaves varying to opposite and partly alternate, some of the upper reducL'd to 

 bracts shorter than tlie peduncles. Near New York, Washington, &c. 



§ 3. STEIRONEMA, Raf. Leaves opposite, no! doited, (jltdiroiis, mostlij dilate at 

 the base : flowers noddinij on slender peduncles from the axils of the upper leaves : 

 corolla light yellow, not streaked nor dotted ; the lol>es broadly ovate, fm'nted, trith 

 undulate or denticulate margins, little exceeding the sepals: flJamenls nearly equal, 

 scarcely momulclphous, with the rudiments of a sterile set interpnsid at the bnsi' in 

 the form of slender teeth or processes: anthers linear, at length curved: pod '> - 10- 

 valred, or bursting irregularly, 1 - 20-sefded. 



4. L. Ciliilta, L. Stem erect (20-.'}0 high); leaves lanceolate-ovate (.T-f.' 

 .ong), tapering to an acute point, rnu»ded or heartsha/^d at the base, all on long 

 iind fringed petioles; corolla longer than the calyx. — Low ground and thickets: 

 common. July. 



5 L. radlcans, Hook. .S>m «/«)rfrr, .<;oon J7v//wrf, the elongated branches 

 jften rooting in the muil ; leaves ovate-lanceolate, mostly rounded at Uie base, on sltn- 



