PRIMULACE^ 105 



2. P. mistassfnica, Michx. 



Scape 2-8 in. high ; leaves spatulate or wedge-shaped, rather thin with 

 prominent veins, and not mealy as in the preceding; ooroJUa pale pink or 

 white, with a long tube. Wet banks, local, Lake Winnipeg and west to 

 Rocky Mts. 



2. LYSIMACHIA. Loosestrife. 



Calyx 5 or 6-parted; corolla wheel-shaped or bell-shaped, 5-7- 

 parted, tube very short ; stamens 5-7, on the corolla; style thread- 

 like; capsule ovoid, few to several-seeded. Leafy stemmed per- 

 ennials with yellow flowers, solitary or clustered in the axils of the 

 leaves. 



1. L. thyrsiflSra, L. Tufted Loosestrife. 



Stem simple, 8-24 in. high, smooth or slightly pubescent when young ; 

 flowers in heads or spikes in the axils of some of the leaves about halfway up 

 the stem. Wet places, Man.-Alta. 



3. STEIRONEMA. 



Calyx 5-parted, persistent; corolla 5-parted, wheel-shaped, with 

 no tube ; stamens 5, distinct or united at the base ; capsule several 

 or many-seeded. Leafy perennial herbs with opposite simple 

 leaves and nodding yellow flowers on slender peduncles in the axils. 



1. S. cili^tum, Raf. 



Stem erect, simple; leaves lanceolate to ovate, tapering to a point, and 

 heart-shaped at the base; petioles ciliate. Low-ljing thickets, Man.- 

 Alta. 



2. S. lanceoiatum. Gray. 



Stem erect, or reclining and rooting at the joints; leaves lanceolate, usually 

 tapering into a petiole generally margined but never ciliate, the lower leaves 

 sometimes broader on slender petioles. Low ground, local, or doubtful. 



3. S. quadriflSrum, (Sims) Hitchc. 



Stems slender, 4-angled, 8 in. to 2§ ft. high, branched towards the base; 

 upper leaves sessile, Hnear, smooth, shining, and rather rigid, lower leaves 

 spatulate; corolla longer than the calyx. (S. longifolium, Giay) . Banks of 

 streams, E. Man. 



4. GLAUX. Sea Milkwoet. 



Calyx bell-shaped, 5-oleft, the lobes petal-like; eoroUa wanting; 

 stamens 5, on the calyx and alternate with the lobes; capsule few- 

 seeded. Low, succulent, and leafy perennials with opposite sessile 

 leaves, and solitary flowers in the axils. 



