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7a. Leaves at least twice as long as wide; branches brownish or 



purplish 8. 

 Tb. Leaves less than twice as long as wide; branches greenish; fruit 



blue Dogwood, Cornus circinata. 



8a. Branches purplish; fruit blue Dogwood, Cornus amomum. 

 8b. Branches brownish; fruit white Dogwood,* Cornus baileyi. 



9a. Branches bright red or reddish-purple 



Dogwood, Cornus stolonifera. 

 9b. Branches grayish Dogwood, Cornus panicnlata. 



ERICACEAE, the Heath Family 



Herbs or shrubs, frequently with evergreen leaves; sepals 4 5; 

 corolla regular, with 4 5 petals; stamens as many or twice as many; 

 ovary 3 10-celled, with 1 style. 



la. Plants without green color; leafless or with scale leaves only 2. 

 Ib. Plants with green leaves 4. 



2a. Flowers solitary (1 2 dm. high; summer) 



Indian Pipe, Monotropa uniflora. 



2b. Flowers in clusters 3. 



3a. Petals united into a bell-shape corolla (3 9 dm. high; summer) 



Pine Drops, Pterospora andromedea. 

 3b. Petals all separate (1 3 dm. high; summer) 



Beech Drops, Monotropa hypopitys, 



4a. Leaves all basal; herbaceous plants with terminal racemes 



(1 4 dm. high; summer) (Shin-leaf) 5. 

 4b. Stem-leaves present 12. 



5a. Style straight 6. 



5b. Style bent near the apex 8. 



6a. Racemes one-sided, the flowers all turned in one direction 

 (flowers white or greenish-white) 7. 



6b. Raceme regular, the flowers not all pointing in the same di- 

 rection (flowers white or pink) Shin-leaf, Pyrola minor. 



Flowers numerous in each raceme^ Shin-leaf, Pyrola secunda. 

 Flowers only 3 7 in each raceme 



Shin-leaf, Pyrola seconda Yar. obtusata. 



8a. Flowers pink or purple 9. 

 8b. Flowers white or greenish 10. 



9a. Leaves cordate at base Shin-leaf, Pyrola asarifolia. 



9b. Leaves rounded at base, not cordate 



Shin-leaf, Pyrola asarifolia yar. incarnata. 



lOa. Leaves shining on the upper side; sepals one-third as long 

 as the petals Shin-leaf, Pyrola americana, 



lOb. Leaves dull on the upper side; sepals one-fourth as long 

 as the petals, or a little shorter 11. 



