PRIMROSE FAMILY 651 



3. T. arctica Fisch. Stem about 1 dm. high; upper leaves verticillate, 

 obovate, rounded or obtuse at the apex, cuneate at the base, 1-4 cm. long, entire 

 or nearly so; corolla 10-15 mm. in diameter; lobes ovate. Wet places: Alaska — 

 Yukon— B.C.— Ore. Subalp. My-Jl. 



6. LYSIMACHIA (Tourh.) L. Loosestrife. 



Perennial or rarely annual caulescent herbs. Leaves opposite or whorled, 

 entire, glandular-pimctate. Flowers axillary, solitary or in terminal or axillary 

 racemes. Sepals 5, practically distinct. Corolla rotate or short-funnelform, 

 yellow, its lobes entire, convolute. Stamens 5: staminodia wanting; filaments 

 united at the base; anthers short. Styles fiHform; ovary 1-celled. Capsule 

 globose, few-several-seeded. 



1. L. terrestris (L.) B.S.P. Glabrous perennial, with a rootstock, and 

 often bulbiferous in the axils; leaves opposite or some of them alternate, lanceo- 

 late, acute at both ends, usually black-punctate, 2-8 cm. long; flowers in term- 

 inal bracted racemes; corolla rotate, deeply parted, yellow with purple streaks 

 or dots, nearlv as long as the sepals. L. stricta Ait. In swamps: Newf. — Ga. — • 

 Ark.— Sask.— B.C. Borml. Jl-S. 



7. STEIRONEMA Raf. Fringed Loosestrife. 



Perennial, caulescent herbs. Leaves opposite, or whorled above, entire, with 

 ciliate petioles, without glandular dots. Flowers axillary, solitary, on nodding 

 pedicels. Sepal^ 5, essentially distinct. Corolla rotate, yellow, 5-lobed, the 

 lobes erose-denticulate. Stamens and staminodia 5; filaments distinct; anthers 

 linear. Style filiform; ovary 1-celled. Capsule round, 10-20-seeded. 



1. S. ciliatum (L.) Raf. Perennial, with a horizontal rootstock; stem 3-12 

 dm. high, glabrous; leaves with cihate petioles; blades ovate or lanceolate, acute 

 or acuminate at the apex, acute, rounded, truncate, or subcordate at the base, 

 5-15 cm. long, glabrous except the ciliolate margins; peduncles axillary, 1-5 cm. 

 long; corolla 1.5-2.5 cm. broad, yellow; lobes erose-denticulate, broadly obovate. 

 Moist thickets and swamps: N.S. — Ga. — Ariz. — B.C. Plain — Submont. Je- 

 Au. 



8. NAUMBURGIA Moench. Tufted Loosestrife. 



Erect perennial caulescent water-herbs. Leaves opposite, entire, narrow. 

 Flowers in axillary spikes. Sepals 5-7, linear, imbricate. Corolla yellow, deeply 

 5-7-parted, with narrow segments. Stamens 5-7, alternating with as many 

 tooth-like staminodia; filaments slender, glabrous. Style slender; stigma capi- 

 tate. Capsule 5-7-valved, few-seeded. 



1. N. thyrsiflora (L.) Duby. Perennial, with a rootstock; stem 3-8 dm. 

 high, simple, glabrous or slightly villous; leaves sessile, 5-10 cm. long, lanceolate 

 to linear-lanceolate, acute; racemes 1-2.5 cm. long; flowers nearly sessile, crowded; 

 corolla 4-6 mm. broad, yellow, with black spots; divisions linear. In water and 

 swamps: N.S. — Pa. — Colo. — Calif. — Alaska; Eurasia. Plain — Submont. My- 



9. ANAGALLIS (Tourn.) L. Poor Man's or Shepherd's 

 Weatherglass, Pimpernel. 



Annual or rarely perennial decumbent, caulescent herbs. Leaves mostly 

 opposite or whorled, entire. Flowers axillary, solitary, on slender pedicels. 

 Calyx 5-cleft, persistent. Corolla blue, pink, or white, rotate; lobes 5, entire, 

 convolute. Stamens 5; filaments slender, adnate to the base of the corolla, 

 sometimes pubescent. Style filiform; stigma capitate; ovary 1-celled; ovules 

 half-anatropous. Capsule circumscissile, subglobose; seeds numerous. 



1. A. arvensis L. A glabrous annual; stems spreading, 5-30 cm. long, 

 4-angled; leaf-blades ovate or oval, 5-20 mm. long, entire, sessile or clasping; 

 peduncles axillary, filiform, 1-2 cm. long; corolla scarlet, pink, or white, 5-7 mm. 

 broad. Waste places: Newf. — Fla. — Calif. — -B.C.; Mex.; nat. from Eurasia and 

 Africa. Je-Au. 



