188 ERICACEAE. 



Pyrola elata Nutt. Very similar to P. bracleata ; but leaves broadly obovate 

 or orbicular, obtuse, thinner, not shiny; flowers paler. In wet places in 

 woods. 



Family 68. ERICACEAE. HEATHER FAMILY. 



Perennial herbs or shrubs; leaves simple, commonly alternate, 

 articulated to the stem, without stipules; flowers regular, or 

 nearly so; corolla generally gamopetalous, 4- or 5-lobed; stamens 

 as many or twice as many as the corolla lobes, hypogynous; style 

 single; ovary with as many cells as the corolla-lobes, or rarely 

 less; seeds small; endosperm fleshy. 



Calyx adherent to the ovary. 274. VACCINIUM, 188. 

 Calyx free from the ovary. 



Fruit a berry-like drupe. 275. ARCTOSTAPHYLOS, 189. 

 Fruit a dry capsule. 



Leaves linear, small. 276. PHYLLODOCE, 189. 



Leaves elliptical, large. 277. MENZIESIA, 189. 



274. VACCINIUM. HUCKLEBERRY. 



Branching shrubs with alternate leaves sometimes coriaceous; 

 flowers small, solitary or in racemes or clusters; corolla various in 

 shape, epigynous, 4- or 5-cleft ; stamens 8 or 10 ; anthers sometimes 

 2-awned on the back ; fruit a 4- or 5-celled or sometimes 8-10-celled 

 berry; seeds numerous. 



Tall shrubs, 1-2 m. high. V. macrophyllum. 

 Low shrubs, less than 50 cm. high. 



Branches sharply angled ; berries red or wine-color. V. scoparium. 



Branches terete; berries blue, with a bloom. V. caespitosum. 



Vaccinium macrophyllum (Hook.) Piper. Huckleberry. Shrub, 1-2 m. 

 high, glabrous throughout or nearly so; leaves oval or ovate, acute, rarely 

 obtuse, cuneate at base, finely serrate, paler beneath, 1-4 cm. long, short- 

 petioled; pedicels slender; calyx-limb entire; corolla nearly globose, yellowish, 

 4-5 mm. long; fruiting pedicels erect; fruit without a bloom, dark-wine-color 

 or nearly black. Open pine woods, common. 



Vaccinium scoparium Leiberg. Low bushy glabrous shrub, 15-40 cm. 

 high, with numerous erect branches, green and all sharply angled; leaves very 

 small, oval to ovate, serrate, bright green; corolla ovoid, 2 mm. long; berries 

 light red, 24 mm. in diameter. In lodgepole pine forests, Blue Mountains. 



Vaccinium caespitosum Michx. Low bushy shrub, 10-30 cm. high, 

 glabrous or minutely puberulent; leaves obovate, obtuse or acute, crenulate- 

 serrulate, cuneate at base, very short-petioled, 1-2 cm. long; flowers solitary 

 in the axils, longer than the drooping pedicels; calyx-lobes very short; corolla 

 pink, ovoid, 5-6 mm. long; berry blue, with a bloom, sweet, 3-5 mm. in di- 

 ameter. North hillsides, common. 



