Genus 6. 



PRIMROSE FAMILY 



Fringed 



192. 



I. Steironema ciliatum (L.) Raf. 

 Loosestrife. Fig. 3292. 



Lysimachia ciliata L. Sp. PI. 147. 1753. 

 Steironema ciliatum Raf. Ann. Gen. Phys. 

 1820. 



Stems erect, simple or branched, slender, mostly 

 glabrous, I "-4° high. Leaves membranous, ovate, 

 ovate-oblong, or ovate-lanceolate, pinnately veined, 

 acute or acuminate at the apex, obtuse, truncate 

 or cordate at the base, 2'-6' long, 4'-3' wide, the 

 margins ciliolate; petioles ciliate, ¥-¥ long; 

 peduncles filiform, i'-2' long; calyx-segments 

 lanceolate, acuminate, shorter than the erose- 

 denticulate commonly mucronate corolla-seg- 

 ments; flowers 6"-i2" broad; capsule longer than 

 the calyx. 



In moist thickets. Nova Scotia to British Colum- 

 bia, south to Georgia, Alabama, Kansas, New Mexico 

 and Arizona. Ascends to 6300 ft. in North Carolina. 

 Naturalized in Europe. June-Aug. 



2. Steironema intermedium Kearney. 

 Southern Loosestrife. Fig. 3293. 



L. ciliata var, tonsa Wood, Class-book, 505. 1863. 

 Steironema intermedium Kearney, Bull, Torn 



Club 21 : 263. 1894. 

 5'. lonsum Bicknell ; Britt. & Br. 111. Fl. 2 : 590. 



1897. 



Stem erect, l°-2° high, slender, obtusely 

 4-angled, glabrous below, minutely glandular- 

 puberulent above. Leaves 2-3' long, io"-2o" 

 wide, ovate to ovate-lanceolate, acute at the 

 apex, obtuse or subcordate at the base, mi- 

 nutely ciliolate, otherwise glabrous, the upper 

 much smaller; petioles slender, glabrous, or 

 ciliate only at the base; panicle open, leafy; 

 pedicels slender, 2-6 times as long as the flow- 

 ers ; calyx-segments lanceolate, very acute; 

 corolla 9"-io" broad, its segments cuspidate; 

 capsule shorter than calyx. 



On dry rocks, Virginia to Kentucky, Tennessee 

 and Alabama. June-July. 



3. Steironema radicans (Hook.) A. Gray. 

 Trailing Loosestrife. Fig. 3294. 



L. radicans Hook. Comp. Bot. Mag. i : 177. 1836. 



.S". radicans A. Gray, Proc. Am. Acad. 12 : 62' 1876. 



Stem weak, at first erect, soon decumbent or 

 reclined and often rooting at the joints, very 

 slender, glabrous, much branched, \°-2° long. 

 Leaves membranous, pinnately veined, lanceolate 

 to ovate-lanceolate, acute or acuminate at the 

 apex, rounded or narrowed, but not cordate at 

 the base, i'-4' long, i'-i' wide; margins not cilio- 

 late; petioles naked or very sparingly ciliolate, 

 ¥-l¥ long; peduncles filiform, ¥-2 long; calyx- 

 segments ovate or lanceolate, acuminate, about 

 equalling the erose-denticulate corolla-segments ; 

 flowers 3"-4" broad; capsule about one-half as 

 long as the calyx. 



In swamps, Virginia and West Virginia to Arkan- 

 sas and Texas. June-Aug. 



