136 ERICACEAE. 



4. HETEROCODON, Nuttall. 

 JL H. Tariflornm, Nutt. Stems filiform: leaves orbicular, toothed, small 



ERICACEJ2. 



Suborder I. VACCINIE2&. 

 Shmbs (some low and herbaceous): ovary inferior becoming an ediblo berry.*,* ,... 1 



Suborder II. ERICINE.3E. 



Shrubs or trees: calyz free, usually small: corolla gamopetalous (except 11, 12). 

 * Fruit berry-like or fleshy: flowers drooping: corolla ovoid to campanulate with small lobes', 

 stamens 8 or 10 included: bark shedding from at least the branches: leave* evergreen, 

 coriaceous. 



Tree: flowers in large panicles: orange-red berries many seeded 2 



Shrubs: flowers in small racemes: fleshy fruit, 1-10 seeded 3 



Shrubs, low or prostrate: flowers axillary : berries black or red 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 5 



Shrub, a foot high or less: small scale-like leaves in 4 ranks 6 



* * * Fruit a dry capsule, splitting between the cells: anther* not owned. 



+ Corolla gamopetalous. 

 Low Alpine evergreen; leaves re volute: flowers umbellate or corymbose: 



Leaves linear, crowded corolla not pouched 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 _^-. . 10 



1 1 Corolla polypetalous or nearly so. 



Flowers in corymbs or umbels, erect, white, cherry-like 11 



Flowers solitary, nodding, reddish _ .._...,. 12 



Suborder III. PYBOT.E7R. 



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. 



Blowers umbellate or solitary on a leafy woody stem 18 



Flowers solitary on a short scape: petals spreading 14 



Flowers in a raceme on a scape; petals concave, incurved 15 



