1	"Ovary inferior "	Vaccinium
1	"Ovary superior "	2
2	"Petals free (leaves hairy below) "	Ledum
2	"Petals fused together, at least at the base "	3
3	"Petals remaining on the fruit "	4
3	"Petals shed "	6
4	"Petals shorter than the sepals "	Calluna
4	"Petals longer than sepals "	5
5	"Stamens attached at the base of a prominent disk "	Erica
5	"Stamens attached at the base of the petals; disk extremely small "	Bruckenthalia
6	"Leaves scale-like and overlapping "	Cassiope
6	"Leaves not scale-like "	7
7	"Fruit fleshy, not splitting at maturity (a berry or drupe) "	8
7	"Fruit dry, splitting at maturity (a capsule) "	11
8	"Flowers with V-shaped markings "	Agapetes
8	"Flowers without V-shaped markings "	9
9	"Fruit a warty strawberry-like orange or red berry "	Arbutus
9	"Fruit generally smooth, not strawberry-like "	10
10	"Stamens with 4 awns (extended appendages on anthers)"	Gaultheria
10	"Stamens with 2 curved awns"	Arctostaphylos
11	"Petals with pouches that contain the anthers before flowering "	Kalmia
11	"Petals without pouches "	12
12	"Calyx and corolla each with 4 lobes; stamens 8 "	Daboecia
12	"Calyx and corolla each with 5 lobes; stamens mostly 5 or 10 "	13
13	"Seeds 1 or few "	Enkianthus
13	"Seeds numerous "	14
14	"Flowers not urn or pitcher-shaped "	Rhododendron
14	"Fowers basically urn-shaped "	15
15	"Margins of leaves without teeth "	Andromeda
15	"Margins of leaf toothed "	16
16	"Sepals separate from one another "	Pieris
16	"Sepals overlapping one another "	Leucothoe