TlBO PRIML'LACE^. (PRIMROSE FAMILY.) 



6. STEIRONEMA, Raf. 



Calyx 5-parted Corolla rotate, with no proper tul)e, deeply 5-parted, the 

 sinuses rounded ; divisions ovate, cus])idate-pointed, erose-denticulate above, 

 each separately involute around itf rtamen. Filaments distinct or nearly so 

 on the ring at base of corolla, alternating with 5 subulate staminodia ; anthers 

 linear. Capsule 10-20-seeded. — Leafy -stemmed perennials, glabrous except 

 the ciliate petioles, not punctate, the leaves all opposite, but mostly in seeming- 

 whorls on the flowering branches. Peduncles slender, axillary, bearing yellow 

 flowers. (From (rrexpos, sterile, and vTjfxa, thread, referring to the staminodia.) 



1. S. Ciliatum, Raf. Stem erect (2-4° high); leaves lanceolate-ovate 

 (2 -G' long), tapering to an acute point, rounded or heart-shaped at base, all on 

 long and fringed petioles; corolla longer than the calyx. (Lysimachia ciliata, 

 L.) — Low grounds and thickets, common. July. 



2. S. radicans, Gray. Stem slender, soon reclined, the elongated branches 

 often rooting in the mud ; leaves ovate-lanceolate, mostl'j rounded at base, on 

 s'ender petioles ; corolla about the length of the cal\ x. (Lysimachia radicans, 

 Hook.) — Swampy river-banks, W. Va. to Ark. and La. — Leaves and flowers 

 nearly one half smaller than in the last. 



3. S. lanceolatunij Gray. Stem erect (\0' -2^ high) ; leaves lanceolate, 

 ■farijing to ohiung and linear, narrowed into a short margined petiole or tapering 

 base, or the lowest short and broad on long petioles. (Lysimachia lanceolata, 



Walt.)— how grounds and thickets, Ont. to Fla. , the Dakotas, and Tex. 

 Polymorphous ; the" extremes are var. hybridum, Gray, with cauline leaves 

 from oblong to broadly linear, common north and west, — and var. ANGUSTI- 

 FOLIUM, Gray, with stems more branched, a span to 2° high, and the cauline 

 'eaves linear, acute at both ends, more sessile, 1 - 2" broad ; mainly southward. 



4. S. longifolium, Gray. Stem erect, 4-angled, slender (1-3° high), 

 often branched below; slem-lcaves sessile, norroivlg linear, elonqated (2-4' 

 long, 2-3" wide), smooth and shining, rather rigid, obtuse, the margins often 

 a little revolute, the veins obscure ; the lowest oblong or spatulate ; corolla 

 (8-9'' broad) longer than the calyx, the lobes conspicuously pointed. (Lysi- 

 machia longifolia, Pursh.) — Banks of streams, from western N. Y. to Va., 

 Minn., and Iowa- July - Sept. 



7o LYSIMACHIA, Tourn. Loosestrife. 



Calyx 5 - 6-parted, Corolla rotate, the divisions entire, convolute in bud. 

 Filaments commonly monadelphous at base ; anthers oblong or oval ; stand 

 nodia none. Capsule few -several-seeded. — Leafy -stemmed perennials, with 

 herbage commonly glandular-dotted- {In honor of King Lijsimachus,OT from 

 \vais, a release from , and /uidxv> strife.) 



§ 1. LYSIMACHIA proper. Corolla yellow, rotate, and very deephj parted,^ 

 and with no teeth between the lobes; stamens more or less monadelphous, o^en 

 unequal ; leaves opposite or whorled, or some abnormall y alternate. 



* Flowers (middle-sized) in a terminal leafy panicle; corolla without marks. 



L, VULGARIS, L.,a coarse and tall European species, pubescent and branch 

 ing. with ovate-lanceolate distinctly petioled leaves, and glandular filament? 

 united to near the middle. — Naturalized iu a few places in E. Mass. 



