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 (Tourn.) L. LOOSESTRIFE. 



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

 entire, glandular-punctate. 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 filiform; 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, nearly as long as the sepals. L. stricta Ait. In swamps: Newf. Ga. 

 Ark. Sask. B.C. Boreal. 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. Sepals 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 ciliate 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- 

 Jl. 



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. 



