402 164. Empetrum. 36. ERICIN.E. Pl.ex.cal. 



Empelrum nigrum. Black crake-berry. 



Stem procumbent; twigs bald; leaves oblong, blunt, 

 bald ; edge turned over, fringed. 



Empetnim montanum, fructu nigro. Rati Syn. 444, 1. 

 Erica baccifeia procumbens, Ger. em. 1383,9. 

 Erica baccifera nigra, Park. 1485. 

 Empetrum nigrum, Lin. S. P. 1450. 

 Crow-berries. Blackberry heath. 



Mountain heaths ; shrubby ; May. 



Bark falling off; inner bark yellow ; leaves membra- 

 naceous, swollen, furrowed underneath; petioles very short; 

 corolla and anthers purple ; berries black. 



XI. 165. PYROLA. Brunsfel. Winter-green, 



Calyx very small, 5-parted; corolla 5-parted; stamens 10, 

 2 at the base of each lobe ; anthers opening by 2 reverse- 

 ovate foramens at the base, becoming reversed ; stigma pel- 

 tate ; capsule 5-celled, many-seeded ; dehiscence loculicidal ; 

 seeds with a , membranous wing. — Stem creeping, scaly, 

 twigs upright; leaves perennial, alternate, petioled, bald; 

 flowers peduncled, terminal, whitish, racemose, mostly 

 drooping ; bractea mostly 1 at the base of each peduncle. 



a. Orpheus. Corolla irregular ; stamens ascending; style 

 declinate ; stigma rotate^ 5-tuhercled, luith a central point ; 

 nectary 0. 



1 . Pyrola roiimdifolia. Round-leaved winter-green. 



Leaves roundish ; racemes many-flowered ; bractece lan- 

 ceolate, as long as the peduncles ; calyx as long as the sta- 

 mens ; stamens ascending ; style declinate, twice as long as 

 the stamens. 



Pyrola, Rdii Syn, 363, 1 ; Ger. em. 408, 1, 

 Pyrola nostras vulgaris. Park. 508. 

 Pyrola rotundifolia, Lin. S. P. 187. 

 Pyrola declinata, Moench Mcth. 315. 

 Common winter-green. 



Woods and mountains ; perennial ; July. 



Root scaly, creeping; leaves dilated, sh'ghtly crenated, 

 rather leathery, about as long as the petiole ; bractece few, 

 on the lower part of the peduncle ; flowers white. 



b. Pyrola. Cor. regular; stamens incurved; anthers opening 



at top; stigma peltate ; nectaries 5; racemes regular. 



2. Pyrola media. Middlesize winter-green, 

 Lear/e^ , roundish ; racemes many-flowered; peduncles 



twisted; corolla globose; stamens regularly inflected, longer 



>* 



