ERICACEZ. 71 
4. HETEROCODON, Nuttall. 
1. HK rarifiorum, Nutt. Stems filiform: leaves orbicular, toothed, small, 
ERICACER. 
Suborder I. VACCINIEZ. 
Shrubs (some low and herbaceous): ovary inferior becoming an edible berry.... ssecee-A 
Suborder II. ERICINEZS. 
Shrubs or trees: calyx free, usually small: corolla gamopetalous (except 11, 12). 
° Fruit berry-like or fleshy: flowers drooping: corolla ovoid to campanulate with smail lobes: 
stamens 8 or 10 included: bark shedding from at least the branches: leaves evergreen, 
coriaceous. 
Tree: flowers in large panicles: orange-red berries many seeded. .......sseeeeeeeeees 2 
Shrubs: flowers in small racemes: fleshy fruit, 1-10 seeded..... ... 85 giro wai sececeee - 8 
Shrubs, low or prostrate: flowers axillary: berries black or red..........seeee-eenees 4 
** Fruit, a dry, many-seeded capsule: flowers nodding: anthers awn-tipped. 
Shrub, 3 or 4 ft. high: oblong leaves 1 to 3 inches long............seecseccececcaces 5 
Shrub, a foot high or less: small scale-like leaves in 4ranks....... ope eecececeseweous 6 
°**© Fruit a dry capsule, splitting between the cella: anthers not awned. 
+ Corolla gamopetalous. 
Low Alpine evergreen; leaves revolute: flowers umbellate or corymbose: 
Leaves linear, crowded corolla not pouched..........0..00-+.eeeee wees sewers 7 
Leaves oblong, opposite; corolla 10-ribbed, from 10 depressed pouches......... 8 
Not alpine: leaves crowded at the ends of branches, entire. 
Corolla usually 4-toothed. ovoid to cylindrical, dull purple... ..+--....., 9 
Corolla usually 5-lobed, limb spreading, white to rose.......0.0..2502--anee- 10 
tt Corolla polypetalous or nearly so. 
Flowers in corymbs or umbels, erect, white, cherry-like.... ....00..---eeeee 11 
Flowers solitary, nodding, reddish.............0..000- diesiasisjeinessssereoss LO 
Suborder 117. PYROLEZS, 
Perennials, herbaceous or slightly woody with smooth evergreen leaves (except one species 
in No. 15): flowers nodding, polypetalous; petals broad: ovary superior: stamens 10: 
anthers in bud extrorse, at length by inversion introrse with 2-horned base above. 
Flowers umbellate or solitary on a leafy woody stem...........ceccecsccaccaceees 13 
Flowers solitary on a short scape: petals spreading........c.csecsesececceccsscees 14 
Flowers in a raceme on @ scape; petals concave, incurved.....0 ....2ecececceececss 15 
