PYROLACEAE. 259 



3. PYROLA L. WiNTERGREEN. 



Flowers with a lo-lobed hypogynous disk; stigma peltate, s-lobed ; petals with a 



pair of tubercles at the base. i. P. secunda. 



Flowers without hypogynous disk and petals without tubercles. 



Style straight and short ; stigma peltate ; stamens equally connivent around 



the pistil. 2. P. minor. 



Style and stamens declined ; stigma much narrower than the concave apex of 

 the style, which forms a collar or ring. 

 Leaves not mottled. 



Petals pink or purplish. 



Leaf-blades round-reniform. 3. P. asarifolia. 



Leaf-blades orbicular or round-ovate. 4. P. uliginosa. 



Petals white or greenish. 5- P- chlorantha. 



Leaves mottled. 6. P. picta. 



1. Pyrola secunda L. In damp woods from Lab. and Alaska to D. C. and 

 Calif. — Alt. 6000-12,000 ft. — Grand Lake; Mt. Abram, Ouray; Echo Cafion; 

 Box Caiion, west of Ouray; Pagosa Peak; Steamboat Springs, Routt Co.; 

 Mt. Harvard ; Cheyenne Mountain ; Beaver Creek ; mountains between Sun- 

 shine and Ward ; Fish Creek Falls. 



2. Pyrola minor L. In woods from Greenl. and Alaska to Conn, and 

 Calif. — Alt. 8000-12,000 ft. — Headwaters of Clear Creek; Grand Lake; Mar- 

 shall Pass; chaparral-covered hills southeast of Ouray; Artist's Glen, near 

 Pike's Peak; Silver Plume; La Plata Caiion; Cameron Pass; Graymont; 

 Beaver Creek. 



3. Pyrola asarifolia Michx. In damp woods from N. B. and Alb. to N. Y. 

 and Colo. — Alt. 9000-12,000 ft. — West Spanish Peak; Graymont. 



4. Pyrola uliginosa Torr. {P. rotundifolia uliginosa A. Gray) In wet 

 rich woods and swampy places from N. S. and B. C. to N. Y., Colo, and 

 Calif. — Alt. 7000-12,000 ft. — Headwaters of Clear Creek; South Boulder Peak; 

 Grand Lake; Marshall Pass; Ouray; Berthoud Pass, near Cozzens; Keblar 

 Pass ; Steamboat Springs ; Beaver Creek. 



5. Pyrola chlorantha Swartz. In woods from Lab. and B. C. to D. C, Colo, 

 and Calif.; also in Europe. — Alt. 9000-12,000 ft. — Marshall Pass; Hamor's 

 Lake, north of Durango ; 4 miles west of Cameron Pass ; Cheyenne Moun- 

 tains ; Front Range, Larimer Co. ; Gore Pass ; swamp above Beaver Creek. 



6. Pyrola picta Smith. In woods from Ida. and Wash, to Colo., Ariz, and 

 Calif. — Alt. 8000-9000 ft. — Canons and adjoining meadows west of Ouray. 



Family 103. ERICACEAE DC. Heath Family. 



Fruit more or less fleshy or surrounded by a fleshy calyx or hypanthium ; plants 

 prostrate, evergreen ; corolla without sacs. 

 Fruit a berry or drupe, not enclosed in the calyx. i. Arctostaphylos. 



Fruit a loculicidal capsule, enclosed in the accrescent fleshy calyx and 

 hypanthium. 2. Gaultheria. 



Fruit dry, a septicidal capsule ; evect bog-shrubs. 



Corolla saucer-shaped with 10 sacs for the anthers. 3. Kalmia. 



Corolla campanulate without sacs. 4. Phyllodoce. 



I. ARCTOSTAPHYLOS Adans. Bear-berry, Kinnikinic. 



I. Arcostaphylos uva-ursi (L.) Spreng. In woods, on hillsides and sandy 

 soil from Lab. and Alaska to N. J., Colo, and Ore. — Alt. 5000-10,000 ft. — 



