PYROLACE^E, 225 



2. OXYCOCCUS. Pers. 



Calyx superior, 4-cleft. Carol 4-parted, with the segments 

 somewhat linear and revolute. Stamens 8. Filaments con- 

 nivent ; anthers tubular, 2-parted. Berry many-seeded. 



Octandria. Monogynia. 



1. O. macrocarpus Pursh : stem prostrate, filiform, creeping ; leaves 

 oblong, nearly flat, obtuse, with distant obsolete serratures, glaucous 

 beneath ; pedicels elongated, 1-flowered ; segments of the corol linear- 

 lanceolate. O. vulgaris var. macrocarpus Pers. Vacciniitm oxycoccus 

 var. oblongifolius Mich. 



HAB. Sphagnous swamps. Can. and N. S. June. T?. Shrub 

 creeping and throwing up short erect branches. Leaves alter- 

 nate, small. Flowers white or pale red, on slender axillary pe- 

 dicels. Berry large, bright scarlet. Common Cranberry. 



2. O. palustris Pers. : stem filiform, creeping '; leaves ovate, ever- 

 green, entire, with revolute margins ; peduncles i-flowered, terminal ; 

 corol 4-parted ; segments ovate. O. vulgaris Pursh. Vaccinium oxy- 

 coccus Linn. 



HAB. Alpine bogs. Can. and N. S. June. T?. A small ever- 

 green creeping plant. Ifowers red. Berries bright purple, 

 smaller than the former. 



ORDER LXXII. PYROLACEjE. 'Lind. 



Calyx 5-partecl, persistent, inferior. Corol monopetalous^ 

 hypogynous, regular, deciduous, 4 or 5-toothed, with an im- 

 bricated aestivation. % Stamens hypogynous, twice as nu- 

 merous as the divisions of the corol ; anthers 2-celled, open- 

 ing longitudinally, and furnished with appendages at the base. 

 Ovary superior, 4 or 5-celled, many-seeded, with a hypogyn- 

 ous disk ; style 1, straight or declinate ; stigma simple. 

 Fruit capsular, 4 or 5-celled, dehiscent, with central placen- 

 tae. Seeds indefinite, minute, winged ; embryo minute, in- 

 serted at the extremity of a fleshy albumen. 



Herbs, rarely undershrubs, sometimes parasitical and leaf- 

 less. Leaves either wanting or simple. Flowers solitary, or 

 in terminal racemes. 



1. PYROLA. Linn. 



Calyx minute, 5-cleft or 5-parted. Petals 5. Stamens 

 10, slightly united at base. Anthers opening by 2 pores, at 

 base. Stigma 5-lobed. Capsule 5-celled. Placenta lunate. 

 Seeds invested with a long aril. Decandria. Monogynia. 



