68 KEY TO THE SPECIES 



3. PYROLA (Wintbrqreen) 



Low and smooth, with a cluster of rounded evergreen basal leaves, a simple 

 raceme of nodding flowers on an upright stem, and concave more or less con- 

 verging petals. 



• Style straight ; flowers secund. 



1. Pyrola secunda L. (One-sided Wintergreen). Leaves several, near the 

 base of a short stem arising from a branched base, thin, ovate, crenate, 2-4 cm. 

 long ; scape about 1 dm. long, bearing a 1-sided spike-like raceme of drooping, 

 greenish-white flowers. Moist woods. 



* * Style and stamens declined ; flowers simply racemose. 



2. Pyrola cMorantha Sw. (Green-flowered Wintergreen). Scape 1-2 dm. 

 high ; leaves leathery, oval to orbicular, entire or nearly so ; flowers 3-10 ; the 

 calyx-lobes very short and obtuse, appressed to the greenish- white corolla ; anther 

 cells with beaked tips. Sub-alpine woods. 



3. Pyrola uliginosa Torr. (Bog Wintergreen). Scape 2-4 dm. high ; leaves 

 large, thick, dark, oval to orbicular, obscurely crenate ; flowers 8-15, with ovate- 

 lanceolate calyx-lobes about one-third as long as the rose-colored or purple petals; 

 anther cells beaked. Mountain bogs. 



XLVIII. ERICACE^ (Heath Family) 



Shrubs or small trees with regular sympetalous 4-5-parted 

 flowers, as many or twice as many stamens (10 in ours), anthers 

 opening by terminal holes, solitary styles, and a superior ovary 

 becoming a berry-like fruit (in ours), with 5-10 seed-like nut- 

 lets. (See Plant Relations, p. 200, Fig. 167 ; also Plant Struc- 

 tures, p. 269, Fig. 254 ; p. 270, Fig. 255 ; p. 271, Fig. 256.) 



1. ARCTOSTAPHYLOS (Bearbeeky) 



Shrubs with alternate leaves, nearly white flowers in terminal clusters, urn- 

 shaped corolla with a short revolute 5-toothed border, included stamens, and a 

 berry-like fruit. 



1. Arctostapliylos Uva-ursi (L.) Spreng (Kinni-ki-nic). Trailing ; leaves 

 thick and evergreen, obovate or spatulate, entire, smooth ; fruit red. Bare ground 

 and rocks. 



XLIX. VACCINIACEiE (Whohtleberey Family) 



Like EricacecE, but ovary inferior and forming an edible 

 berry or berry-like fruit. 



1. VACCINIUM (Blueberry) 



Shrubs with simple leaves, solitary or clustered white or reddish flowers, 

 corolla with 5-cleft revolute border, 10 stamens with anthers prolonged upward 

 into a tube, and a 5-celled edible berry with many seeds. 



