WINTERGREEN FAMILY 637 



Petals 5, concave, sessile. Stamens 10; filaments declined; anthers contracted 

 under the terminal pores. Ovary 5-celled; hypogynous disk none; style long, 

 declined and curved upwards towards the end, which is enlarged, truncate and 

 concave and forming a ring or collar; stigma much narrower, 5-lobed. Capsule 

 5-celled, 5-lobed, loculicidally 5-valved; valves opening from the base and cob- 

 webby on the margins. 



Leaves ample, not scale-like. 

 Leaves not mottled. 



Leaves not spatulate, dark green. 

 Petals pink or purplish. 



Leaf-blades crenulate, not callous-denticulate, obtuse. 



Leaf-blades round-reniform to orbicular. 1. P. asari folia. 



Leaf-blades orbicular to round-ovate. 2. P. uliginosa. 



Leaf-blades more or less distinctly callous-denticulate by the protruding 



ends of the veins, rounded-ovate, acute. 3. P. bracteata. 

 Petals white or greenish. 



Leaf-blades oval, longer than the petioles. 4. P. elliptica. 



Leaf-blades orbicular, usually shorter than the petioles. 5. P. chlorantha. 



Leaves spatulate, pale or- yellowish green. 6. P. dcntata. 



Leaves mottled. 7. P. picta. 



Leaves reduced to lanceolate scales. 8. P. aphylla. 



1. P. asarifolia Michx. Leaf-blades reniform to orbicular, usually broader 

 than long, shining, finely crenulate, 2.5-6 cm. wide; scape 1-3 dm. high; bracts 

 lanceolate; sepals lanceolate, acute or acuminate, about 2 mm. long; petals oval, 

 pink or purplish, 5-6 mm. long. Wet woods and swamps: X.B. X.Y. Minn. 



-N.M. B.C. Submont. Mont. Je-Jl. 



2. P. uliginosa Torr. Leaf -blades broadly oval to orbicular, usually longer 

 than broad, shining, finely crenulate, 2-6 cm. broad, 2.5-8 cm. long; scape 1-3 

 dm. high; bracts lanceolate, usually purplish; sepals ovate or triangular-lanceo- 

 late, acute or short-acuminate, about 2 mm. long; petals oval or obovate, pink 

 or purplish, 5-7 mm. long. P. rotundifolia incarnata A. Gray, scarcely DC. 

 Wet woods and bogs: N.S. N.Y. Minn. Colo. Calif. B.C. Submont - 

 Subalp. Je-Jl. 



3. P. bracteata Hook. Leaf-blades ovate, acute, shining, 2.5-6 cm. wide, 

 3-8 cm. long; scape 2-4 dm. high; bracts lanceolate, acuminate, the lower at 

 least much exceeding the petioles; sepals lanceolate, acuminate, 3 mm. long or 

 more; petals pink or purplish, oval or obovate, 7-9 mm. long. In wet woods: 

 Alaska Ore. B.C. Yukon. Submont. Je-Au. 



4. P. elliptica Xutt. Leaf-blades oval, acute at the base, rounded, retuse 

 or short-acuminate at the apex, rather thin, crenulate and the teeth often cal- 

 lous-mucronate, 1.5-6 cm. wide, 2-8 cm. long; bracts narrowly lanceolate to 

 subulate; sepals triangular-ovate, acute or acuminate, often less than : mm. 

 long; petals greenish white, oval, 5-6 mm. long. Rich woods: N.S.- 

 Minn. N.M. B.C. Submont. Mont. Je-Au. 



5. P. chlorantha Swartz. Leaf -blades orbicular to broadly oval or obovate, 

 crenulate, thick, but rather dull, rounded or acute at the base, 1-4 cm. wide: 

 sepals triangular-ovate, about 1.5 mm. long, obtuse or acute; petals greenish 

 white, oval, about 7 mm. long. In woods and swampy places: Lab.- 

 Calif B.C.; n Eu. Submont, Subalp. Je-Jl. 



6. P. dentata Smith. Leaf-blades spatulate or oblanceolate, tapering a t 

 the base, acute or obtuse at the apex, callous-denticulate, thick, dull, 



wide, 1.5-4 cm. long; sepals triangular-ovate, acute, about 1.5 mm. 

 oval, 5-6 mm. long, greenish or purplish. In woods: 

 Submont. Mont. Je-Au. 



CHI. _ ^ i 



petals oval, greenish or" purplish, about 6 mm. long. 

 Ariz. Colo. Mont. Submont. Mont. Jl-Au. 



8. P. aphylla Smith. Proper leaves usually replaced by lanceolate scales 

 only on sterile shoots sometimes producing small lanceolate green 



