78 HEATH ORDER 



(y) Leaves toothed 

 m. Leaves lanceolate 



(m) Fruits hairy 5-. discolor 



(n) Fruits smooth 

 h. Stipules small and glandular, 



or non e, . S. lasidndra 



i. Stipules large, scarcely gland- 

 ular 5\ corddta 

 n. Leaves oblanceolate or elliptic to 



obovoid 



(m) Leaves smooth beneath, acute S. monticola 

 (n) Leaves hairy beneath, blunt as 



a rule S.Nuttdllu 



(b) Trees 

 x. Leaves narrowly lanceolate, short- 



petioled 5. n {g ra 



y. Leaves broadly lanceolate, or lance- 

 ovate, long-petioled ^ amygdaloides 

 b. Leaves persistently hairy 



(1) Twigs densely white-hairy; leaves linear- 



oblong S. Candida 



(2) Twigs not densely white-hairy 



(a) Fruits densely white-woolly; leaves 



lanceolate to ovoid ^ glducops 



(b) Fruits merely hairy 



x. Leaves narrowly lanceolate to oblance- 



* ate 5". geyeridna 



y. Leaves lance-oblong to obovoid 5*. rostrdta 



(c) Fruits smooth s. Wolfii 



ERICALES HEATH ORDER 

 PIROLACEAE WINTERGREEN FAMILY 



Sepals 4-5, united, petals 4-5, separate, stamens 8-10, ovary 4-5-celled, 

 style short or slender, often turned downward, stigma 5-lobed, or 5-crenate, 

 fruit a capsule; flowers solitary or in racemes or corymbs; evergreen 

 perennials with simple, entire petioled leaves. 



PIROLA Linne 1753 WINTERGREEN 

 (Lat. pirum, pear, ola, little, from the leaves) 



PL 14, fig. 1-4; pi. 16, fig. 7. 

 Sepals 5, petals 5, concave, sessile, white, yellowish, pink or purple, 



